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VFS/RS support for ELF

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This commit is contained in:
Arun Thomas 2010-12-10 09:27:56 +00:00
parent 9639af49d2
commit 372b873413
22 changed files with 2412 additions and 386 deletions
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2
include/Makefile
View file

@ -10,7 +10,7 @@ INCS= alloca.h ansi.h a.out.h ar.h assert.h configfile.h ctype.h \
syslog.h tar.h termcap.h termios.h time.h timers.h tools.h \
ttyent.h ucontext.h unistd.h utime.h utmp.h wchar.h wctype.h \
hgfs.h tzfile.h util.h fetch.h mpool.h ndbm.h db.h poll.h resolv.h \
memory.h paths.h
memory.h paths.h libexec.h
INCS+= arpa/inet.h arpa/nameser.h
INCS+= minix/a.out.h minix/bitmap.h minix/callnr.h minix/cdrom.h \
minix/com.h minix/config.h minix/const.h minix/cpufeature.h \

2
include/arch/i386/Makefile
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@ -3,6 +3,6 @@ INCSDIR= /usr/include/i386
INCS= archtypes.h bios.h cmos.h cpu.h diskparm.h fpu.h int86.h \
interrupt.h mcontext.h memory.h partition.h \
pci.h pci_amd.h pci_intel.h pci_sis.h pci_via.h \
ports.h stackframe.h vm.h asm.h _align.h param.h
ports.h stackframe.h vm.h asm.h _align.h param.h elf.h
.include <bsd.kinc.mk>

116
include/arch/i386/elf.h Normal file
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@ -0,0 +1,116 @@
/*-
* Copyright (c) 1996-1997 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _MACHINE_ELF_H_
#define _MACHINE_ELF_H_ 1
/*
* ELF definitions for the i386 architecture.
*/
#include <sys/elf32.h> /* Definitions common to all 32 bit architectures. */
#if defined(__ELF_WORD_SIZE) && __ELF_WORD_SIZE == 64
#include <sys/elf64.h> /* Definitions common to all 64 bit architectures. */
#endif
#ifndef __ELF_WORD_SIZE
#define __ELF_WORD_SIZE 32 /* Used by <sys/elf_generic.h> */
#endif
#include <sys/elf_generic.h>
#define ELF_ARCH EM_386
#define ELF_MACHINE_OK(x) ((x) == EM_386 || (x) == EM_486)
/*
* Auxiliary vector entries for passing information to the interpreter.
*
* The i386 supplement to the SVR4 ABI specification names this "auxv_t",
* but POSIX lays claim to all symbols ending with "_t".
*/
typedef struct { /* Auxiliary vector entry on initial stack */
int a_type; /* Entry type. */
union {
long a_val; /* Integer value. */
void *a_ptr; /* Address. */
void (*a_fcn)(void); /* Function pointer (not used). */
} a_un;
} Elf32_Auxinfo;
#if __ELF_WORD_SIZE == 64
/* Fake for amd64 loader support */
typedef struct {
int fake;
} Elf64_Auxinfo;
#endif
__ElfType(Auxinfo);
/* Values for a_type. */
#define AT_NULL 0 /* Terminates the vector. */
#define AT_IGNORE 1 /* Ignored entry. */
#define AT_EXECFD 2 /* File descriptor of program to load. */
#define AT_PHDR 3 /* Program header of program already loaded. */
#define AT_PHENT 4 /* Size of each program header entry. */
#define AT_PHNUM 5 /* Number of program header entries. */
#define AT_PAGESZ 6 /* Page size in bytes. */
#define AT_BASE 7 /* Interpreter's base address. */
#define AT_FLAGS 8 /* Flags (unused for i386). */
#define AT_ENTRY 9 /* Where interpreter should transfer control. */
#define AT_NOTELF 10 /* Program is not ELF ?? */
#define AT_UID 11 /* Real uid. */
#define AT_EUID 12 /* Effective uid. */
#define AT_GID 13 /* Real gid. */
#define AT_EGID 14 /* Effective gid. */
#define AT_EXECPATH 15 /* Path to the executable. */
#define AT_CANARY 16 /* Canary for SSP. */
#define AT_CANARYLEN 17 /* Length of the canary. */
#define AT_OSRELDATE 18 /* OSRELDATE. */
#define AT_NCPUS 19 /* Number of CPUs. */
#define AT_PAGESIZES 20 /* Pagesizes. */
#define AT_PAGESIZESLEN 21 /* Number of pagesizes. */
#define AT_COUNT 22 /* Count of defined aux entry types. */
/*
* Relocation types.
*/
#define R_386_COUNT 38 /* Count of defined relocation types. */
/* Define "machine" characteristics */
#define ELF_TARG_CLASS ELFCLASS32
#define ELF_TARG_DATA ELFDATA2LSB
#define ELF_TARG_MACH EM_386
#define ELF_TARG_VER 1
#define ET_DYN_LOAD_ADDR 0x01001000
#endif /* !_MACHINE_ELF_H_ */

18
include/libexec.h Normal file
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@ -0,0 +1,18 @@
#ifndef _LIBEXEC_H_
#define _LIBEXEC_H_ 1
#include <machine/elf.h>
/* a.out routines */
int read_header_aout(const char *exec_hdr, size_t exec_len, int *sep_id,
vir_bytes *text_bytes, vir_bytes *data_bytes,
vir_bytes *bss_bytes, phys_bytes *tot_bytes, vir_bytes *pc,
int *hdrlenp);
/* ELF routines */
int read_header_elf(const char *exec_hdr,
vir_bytes *text_addr, vir_bytes *text_filebytes, vir_bytes *text_membytes,
vir_bytes *data_addr, vir_bytes *data_filebytes, vir_bytes *data_membytes,
phys_bytes *tot_bytes, vir_bytes *pc, off_t *text_offset, off_t *data_offset);
#endif /* !_LIBEXEC_H_ */

24
include/minix/type.h
View file

@ -157,17 +157,19 @@ struct mem_range
/* For EXEC_NEWMEM */
struct exec_newmem
{
vir_bytes text_bytes;
vir_bytes data_bytes;
vir_bytes bss_bytes;
vir_bytes tot_bytes;
vir_bytes args_bytes;
int sep_id;
dev_t st_dev;
ino_t st_ino;
time_t st_ctime;
uid_t new_uid;
gid_t new_gid;
vir_bytes text_addr; /* Starting address of text section */
vir_bytes text_bytes; /* Length of text section (in bytes) */
vir_bytes data_addr; /* Starting address of data section */
vir_bytes data_bytes; /* Length of data section (in bytes) */
vir_bytes tot_bytes; /* Minimum stack region size (in bytes) */
vir_bytes args_bytes; /* Arguments/environ size on stack (in bytes) */
int sep_id; /* Separate I&D? */
int is_elf; /* Is ELF exe? */
dev_t st_dev; /* Device holding executable file */
ino_t st_ino; /* Inode of executable file */
time_t st_ctime; /* Last changed time of executable file */
uid_t new_uid; /* Process UID after exec */
gid_t new_gid; /* Process GID after exec */
char progname[16]; /* Should be at least PROC_NAME_LEN */
};

3
include/sys/Makefile
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@ -9,6 +9,7 @@ INCS= asynchio.h dir.h file.h ioc_cmos.h ioc_disk.h \
select.h sem.h shm.h sigcontext.h signal.h socket.h \
soundcard.h statfs.h statvfs.h stat.h svrctl.h timeb.h \
time.h times.h types.h ucontext.h ucred.h uio.h un.h \
utsname.h video.h vm.h wait.h cdefs.h null.h poll.h
utsname.h video.h vm.h wait.h cdefs.h null.h poll.h \
elf32.h elf64.h elf_common.h elf_generic.h
.include <bsd.kinc.mk>

249
include/sys/elf32.h Normal file
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@ -0,0 +1,249 @@
/*-
* Copyright (c) 1996-1998 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_ELF32_H_
#define _SYS_ELF32_H_ 1
#include <sys/elf_common.h>
/*
* ELF definitions common to all 32-bit architectures.
*/
typedef uint32_t Elf32_Addr;
typedef uint16_t Elf32_Half;
typedef uint32_t Elf32_Off;
typedef int32_t Elf32_Sword;
typedef uint32_t Elf32_Word;
#if defined(__ACK__)
typedef uint32_t Elf32_Lword;
#else
typedef uint64_t Elf32_Lword;
#endif
typedef Elf32_Word Elf32_Hashelt;
/* Non-standard class-dependent datatype used for abstraction. */
typedef Elf32_Word Elf32_Size;
typedef Elf32_Sword Elf32_Ssize;
/*
* ELF header.
*/
typedef struct {
unsigned char e_ident[EI_NIDENT]; /* File identification. */
Elf32_Half e_type; /* File type. */
Elf32_Half e_machine; /* Machine architecture. */
Elf32_Word e_version; /* ELF format version. */
Elf32_Addr e_entry; /* Entry point. */
Elf32_Off e_phoff; /* Program header file offset. */
Elf32_Off e_shoff; /* Section header file offset. */
Elf32_Word e_flags; /* Architecture-specific flags. */
Elf32_Half e_ehsize; /* Size of ELF header in bytes. */
Elf32_Half e_phentsize; /* Size of program header entry. */
Elf32_Half e_phnum; /* Number of program header entries. */
Elf32_Half e_shentsize; /* Size of section header entry. */
Elf32_Half e_shnum; /* Number of section header entries. */
Elf32_Half e_shstrndx; /* Section name strings section. */
} Elf32_Ehdr;
/*
* Section header.
*/
typedef struct {
Elf32_Word sh_name; /* Section name (index into the
section header string table). */
Elf32_Word sh_type; /* Section type. */
Elf32_Word sh_flags; /* Section flags. */
Elf32_Addr sh_addr; /* Address in memory image. */
Elf32_Off sh_offset; /* Offset in file. */
Elf32_Word sh_size; /* Size in bytes. */
Elf32_Word sh_link; /* Index of a related section. */
Elf32_Word sh_info; /* Depends on section type. */
Elf32_Word sh_addralign; /* Alignment in bytes. */
Elf32_Word sh_entsize; /* Size of each entry in section. */
} Elf32_Shdr;
/*
* Program header.
*/
typedef struct {
Elf32_Word p_type; /* Entry type. */
Elf32_Off p_offset; /* File offset of contents. */
Elf32_Addr p_vaddr; /* Virtual address in memory image. */
Elf32_Addr p_paddr; /* Physical address (not used). */
Elf32_Word p_filesz; /* Size of contents in file. */
Elf32_Word p_memsz; /* Size of contents in memory. */
Elf32_Word p_flags; /* Access permission flags. */
Elf32_Word p_align; /* Alignment in memory and file. */
} Elf32_Phdr;
/*
* Dynamic structure. The ".dynamic" section contains an array of them.
*/
typedef struct {
Elf32_Sword d_tag; /* Entry type. */
union {
Elf32_Word d_val; /* Integer value. */
Elf32_Addr d_ptr; /* Address value. */
} d_un;
} Elf32_Dyn;
/*
* Relocation entries.
*/
/* Relocations that don't need an addend field. */
typedef struct {
Elf32_Addr r_offset; /* Location to be relocated. */
Elf32_Word r_info; /* Relocation type and symbol index. */
} Elf32_Rel;
/* Relocations that need an addend field. */
typedef struct {
Elf32_Addr r_offset; /* Location to be relocated. */
Elf32_Word r_info; /* Relocation type and symbol index. */
Elf32_Sword r_addend; /* Addend. */
} Elf32_Rela;
/* Macros for accessing the fields of r_info. */
#define ELF32_R_SYM(info) ((info) >> 8)
#define ELF32_R_TYPE(info) ((unsigned char)(info))
/* Macro for constructing r_info from field values. */
#define ELF32_R_INFO(sym, type) (((sym) << 8) + (unsigned char)(type))
/*
* Note entry header
*/
typedef Elf_Note Elf32_Nhdr;
/*
* Move entry
*/
typedef struct {
Elf32_Lword m_value; /* symbol value */
Elf32_Word m_info; /* size + index */
Elf32_Word m_poffset; /* symbol offset */
Elf32_Half m_repeat; /* repeat count */
Elf32_Half m_stride; /* stride info */
} Elf32_Move;
/*
* The macros compose and decompose values for Move.r_info
*
* sym = ELF32_M_SYM(M.m_info)
* size = ELF32_M_SIZE(M.m_info)
* M.m_info = ELF32_M_INFO(sym, size)
*/
#define ELF32_M_SYM(info) ((info)>>8)
#define ELF32_M_SIZE(info) ((unsigned char)(info))
#define ELF32_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
/*
* Hardware/Software capabilities entry
*/
typedef struct {
Elf32_Word c_tag; /* how to interpret value */
union {
Elf32_Word c_val;
Elf32_Addr c_ptr;
} c_un;
} Elf32_Cap;
/*
* Symbol table entries.
*/
typedef struct {
Elf32_Word st_name; /* String table index of name. */
Elf32_Addr st_value; /* Symbol value. */
Elf32_Word st_size; /* Size of associated object. */
unsigned char st_info; /* Type and binding information. */
unsigned char st_other; /* Reserved (not used). */
Elf32_Half st_shndx; /* Section index of symbol. */
} Elf32_Sym;
/* Macros for accessing the fields of st_info. */
#define ELF32_ST_BIND(info) ((info) >> 4)
#define ELF32_ST_TYPE(info) ((info) & 0xf)
/* Macro for constructing st_info from field values. */
#define ELF32_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
/* Macro for accessing the fields of st_other. */
#define ELF32_ST_VISIBILITY(oth) ((oth) & 0x3)
/* Structures used by Sun & GNU symbol versioning. */
typedef struct
{
Elf32_Half vd_version;
Elf32_Half vd_flags;
Elf32_Half vd_ndx;
Elf32_Half vd_cnt;
Elf32_Word vd_hash;
Elf32_Word vd_aux;
Elf32_Word vd_next;
} Elf32_Verdef;
typedef struct
{
Elf32_Word vda_name;
Elf32_Word vda_next;
} Elf32_Verdaux;
typedef struct
{
Elf32_Half vn_version;
Elf32_Half vn_cnt;
Elf32_Word vn_file;
Elf32_Word vn_aux;
Elf32_Word vn_next;
} Elf32_Verneed;
typedef struct
{
Elf32_Word vna_hash;
Elf32_Half vna_flags;
Elf32_Half vna_other;
Elf32_Word vna_name;
Elf32_Word vna_next;
} Elf32_Vernaux;
typedef Elf32_Half Elf32_Versym;
typedef struct {
Elf32_Half si_boundto; /* direct bindings - symbol bound to */
Elf32_Half si_flags; /* per symbol flags */
} Elf32_Syminfo;
#endif /* !_SYS_ELF32_H_ */

248
include/sys/elf64.h Normal file
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@ -0,0 +1,248 @@
/*-
* Copyright (c) 1996-1998 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_ELF64_H_
#define _SYS_ELF64_H_ 1
#include <sys/elf_common.h>
/*
* ELF definitions common to all 64-bit architectures.
*/
typedef uint64_t Elf64_Addr;
typedef uint16_t Elf64_Half;
typedef uint64_t Elf64_Off;
typedef int32_t Elf64_Sword;
typedef int64_t Elf64_Sxword;
typedef uint32_t Elf64_Word;
typedef uint64_t Elf64_Lword;
typedef uint64_t Elf64_Xword;
/*
* Types of dynamic symbol hash table bucket and chain elements.
*
* This is inconsistent among 64 bit architectures, so a machine dependent
* typedef is required.
*/
typedef Elf64_Word Elf64_Hashelt;
/* Non-standard class-dependent datatype used for abstraction. */
typedef Elf64_Xword Elf64_Size;
typedef Elf64_Sxword Elf64_Ssize;
/*
* ELF header.
*/
typedef struct {
unsigned char e_ident[EI_NIDENT]; /* File identification. */
Elf64_Half e_type; /* File type. */
Elf64_Half e_machine; /* Machine architecture. */
Elf64_Word e_version; /* ELF format version. */
Elf64_Addr e_entry; /* Entry point. */
Elf64_Off e_phoff; /* Program header file offset. */
Elf64_Off e_shoff; /* Section header file offset. */
Elf64_Word e_flags; /* Architecture-specific flags. */
Elf64_Half e_ehsize; /* Size of ELF header in bytes. */
Elf64_Half e_phentsize; /* Size of program header entry. */
Elf64_Half e_phnum; /* Number of program header entries. */
Elf64_Half e_shentsize; /* Size of section header entry. */
Elf64_Half e_shnum; /* Number of section header entries. */
Elf64_Half e_shstrndx; /* Section name strings section. */
} Elf64_Ehdr;
/*
* Section header.
*/
typedef struct {
Elf64_Word sh_name; /* Section name (index into the
section header string table). */
Elf64_Word sh_type; /* Section type. */
Elf64_Xword sh_flags; /* Section flags. */
Elf64_Addr sh_addr; /* Address in memory image. */
Elf64_Off sh_offset; /* Offset in file. */
Elf64_Xword sh_size; /* Size in bytes. */
Elf64_Word sh_link; /* Index of a related section. */
Elf64_Word sh_info; /* Depends on section type. */
Elf64_Xword sh_addralign; /* Alignment in bytes. */
Elf64_Xword sh_entsize; /* Size of each entry in section. */
} Elf64_Shdr;
/*
* Program header.
*/
typedef struct {
Elf64_Word p_type; /* Entry type. */
Elf64_Word p_flags; /* Access permission flags. */
Elf64_Off p_offset; /* File offset of contents. */
Elf64_Addr p_vaddr; /* Virtual address in memory image. */
Elf64_Addr p_paddr; /* Physical address (not used). */
Elf64_Xword p_filesz; /* Size of contents in file. */
Elf64_Xword p_memsz; /* Size of contents in memory. */
Elf64_Xword p_align; /* Alignment in memory and file. */
} Elf64_Phdr;
/*
* Dynamic structure. The ".dynamic" section contains an array of them.
*/
typedef struct {
Elf64_Sxword d_tag; /* Entry type. */
union {
Elf64_Xword d_val; /* Integer value. */
Elf64_Addr d_ptr; /* Address value. */
} d_un;
} Elf64_Dyn;
/*
* Relocation entries.
*/
/* Relocations that don't need an addend field. */
typedef struct {
Elf64_Addr r_offset; /* Location to be relocated. */
Elf64_Xword r_info; /* Relocation type and symbol index. */
} Elf64_Rel;
/* Relocations that need an addend field. */
typedef struct {
Elf64_Addr r_offset; /* Location to be relocated. */
Elf64_Xword r_info; /* Relocation type and symbol index. */
Elf64_Sxword r_addend; /* Addend. */
} Elf64_Rela;
/* Macros for accessing the fields of r_info. */
#define ELF64_R_SYM(info) ((info) >> 32)
#define ELF64_R_TYPE(info) ((info) & 0xffffffffL)
/* Macro for constructing r_info from field values. */
#define ELF64_R_INFO(sym, type) (((sym) << 32) + ((type) & 0xffffffffL))
#define ELF64_R_TYPE_DATA(info) (((Elf64_Xword)(info)<<32)>>40)
#define ELF64_R_TYPE_ID(info) (((Elf64_Xword)(info)<<56)>>56)
#define ELF64_R_TYPE_INFO(data, type) \
(((Elf64_Xword)(data)<<8)+(Elf64_Xword)(type))
/*
* Note entry header
*/
typedef Elf_Note Elf64_Nhdr;
/*
* Move entry
*/
typedef struct {
Elf64_Lword m_value; /* symbol value */
Elf64_Xword m_info; /* size + index */
Elf64_Xword m_poffset; /* symbol offset */
Elf64_Half m_repeat; /* repeat count */
Elf64_Half m_stride; /* stride info */
} Elf64_Move;
#define ELF64_M_SYM(info) ((info)>>8)
#define ELF64_M_SIZE(info) ((unsigned char)(info))
#define ELF64_M_INFO(sym, size) (((sym)<<8)+(unsigned char)(size))
/*
* Hardware/Software capabilities entry
*/
typedef struct {
Elf64_Xword c_tag; /* how to interpret value */
union {
Elf64_Xword c_val;
Elf64_Addr c_ptr;
} c_un;
} Elf64_Cap;
/*
* Symbol table entries.
*/
typedef struct {
Elf64_Word st_name; /* String table index of name. */
unsigned char st_info; /* Type and binding information. */
unsigned char st_other; /* Reserved (not used). */
Elf64_Half st_shndx; /* Section index of symbol. */
Elf64_Addr st_value; /* Symbol value. */
Elf64_Xword st_size; /* Size of associated object. */
} Elf64_Sym;
/* Macros for accessing the fields of st_info. */
#define ELF64_ST_BIND(info) ((info) >> 4)
#define ELF64_ST_TYPE(info) ((info) & 0xf)
/* Macro for constructing st_info from field values. */
#define ELF64_ST_INFO(bind, type) (((bind) << 4) + ((type) & 0xf))
/* Macro for accessing the fields of st_other. */
#define ELF64_ST_VISIBILITY(oth) ((oth) & 0x3)
/* Structures used by Sun & GNU-style symbol versioning. */
typedef struct {
Elf64_Half vd_version;
Elf64_Half vd_flags;
Elf64_Half vd_ndx;
Elf64_Half vd_cnt;
Elf64_Word vd_hash;
Elf64_Word vd_aux;
Elf64_Word vd_next;
} Elf64_Verdef;
typedef struct {
Elf64_Word vda_name;
Elf64_Word vda_next;
} Elf64_Verdaux;
typedef struct {
Elf64_Half vn_version;
Elf64_Half vn_cnt;
Elf64_Word vn_file;
Elf64_Word vn_aux;
Elf64_Word vn_next;
} Elf64_Verneed;
typedef struct {
Elf64_Word vna_hash;
Elf64_Half vna_flags;
Elf64_Half vna_other;
Elf64_Word vna_name;
Elf64_Word vna_next;
} Elf64_Vernaux;
typedef Elf64_Half Elf64_Versym;
typedef struct {
Elf64_Half si_boundto; /* direct bindings - symbol bound to */
Elf64_Half si_flags; /* per symbol flags */
} Elf64_Syminfo;
#endif /* !_SYS_ELF64_H_ */

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/*-
* Copyright (c) 1998 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_ELF_COMMON_H_
#define _SYS_ELF_COMMON_H_ 1
/*
* ELF definitions that are independent of architecture or word size.
*/
/*
* Note header. The ".note" section contains an array of notes. Each
* begins with this header, aligned to a word boundary. Immediately
* following the note header is n_namesz bytes of name, padded to the
* next word boundary. Then comes n_descsz bytes of descriptor, again
* padded to a word boundary. The values of n_namesz and n_descsz do
* not include the padding.
*/
typedef struct {
uint32_t n_namesz; /* Length of name. */
uint32_t n_descsz; /* Length of descriptor. */
uint32_t n_type; /* Type of this note. */
} Elf_Note;
/*
* The header for GNU-style hash sections.
*/
typedef struct {
uint32_t gh_nbuckets; /* Number of hash buckets. */
uint32_t gh_symndx; /* First visible symbol in .dynsym. */
uint32_t gh_maskwords; /* #maskwords used in bloom filter. */
uint32_t gh_shift2; /* Bloom filter shift count. */
} Elf_GNU_Hash_Header;
/* Indexes into the e_ident array. Keep synced with
http://www.sco.com/developers/gabi/latest/ch4.eheader.html */
#define EI_MAG0 0 /* Magic number, byte 0. */
#define EI_MAG1 1 /* Magic number, byte 1. */
#define EI_MAG2 2 /* Magic number, byte 2. */
#define EI_MAG3 3 /* Magic number, byte 3. */
#define EI_CLASS 4 /* Class of machine. */
#define EI_DATA 5 /* Data format. */
#define EI_VERSION 6 /* ELF format version. */
#define EI_OSABI 7 /* Operating system / ABI identification */
#define EI_ABIVERSION 8 /* ABI version */
#define OLD_EI_BRAND 8 /* Start of architecture identification. */
#define EI_PAD 9 /* Start of padding (per SVR4 ABI). */
#define EI_NIDENT 16 /* Size of e_ident array. */
/* Values for the magic number bytes. */
#define ELFMAG0 0x7f
#define ELFMAG1 'E'
#define ELFMAG2 'L'
#define ELFMAG3 'F'
#define ELFMAG "\177ELF" /* magic string */
#define SELFMAG 4 /* magic string size */
/* Values for e_ident[EI_VERSION] and e_version. */
#define EV_NONE 0
#define EV_CURRENT 1
/* Values for e_ident[EI_CLASS]. */
#define ELFCLASSNONE 0 /* Unknown class. */
#define ELFCLASS32 1 /* 32-bit architecture. */
#define ELFCLASS64 2 /* 64-bit architecture. */
/* Values for e_ident[EI_DATA]. */
#define ELFDATANONE 0 /* Unknown data format. */
#define ELFDATA2LSB 1 /* 2's complement little-endian. */
#define ELFDATA2MSB 2 /* 2's complement big-endian. */
/* Values for e_ident[EI_OSABI]. */
#define ELFOSABI_NONE 0 /* UNIX System V ABI */
#define ELFOSABI_HPUX 1 /* HP-UX operating system */
#define ELFOSABI_NETBSD 2 /* NetBSD */
#define ELFOSABI_LINUX 3 /* GNU/Linux */
#define ELFOSABI_HURD 4 /* GNU/Hurd */
#define ELFOSABI_86OPEN 5 /* 86Open common IA32 ABI */
#define ELFOSABI_SOLARIS 6 /* Solaris */
#define ELFOSABI_AIX 7 /* AIX */
#define ELFOSABI_IRIX 8 /* IRIX */
#define ELFOSABI_FREEBSD 9 /* FreeBSD */
#define ELFOSABI_TRU64 10 /* TRU64 UNIX */
#define ELFOSABI_MODESTO 11 /* Novell Modesto */
#define ELFOSABI_OPENBSD 12 /* OpenBSD */
#define ELFOSABI_OPENVMS 13 /* Open VMS */
#define ELFOSABI_NSK 14 /* HP Non-Stop Kernel */
#define ELFOSABI_AROS 15 /* Amiga Research OS */
#define ELFOSABI_ARM 97 /* ARM */
#define ELFOSABI_STANDALONE 255 /* Standalone (embedded) application */
#define ELFOSABI_SYSV ELFOSABI_NONE /* symbol used in old spec */
#define ELFOSABI_MONTEREY ELFOSABI_AIX /* Monterey */
/* e_ident */
#define IS_ELF(ehdr) ((ehdr).e_ident[EI_MAG0] == ELFMAG0 && \
(ehdr).e_ident[EI_MAG1] == ELFMAG1 && \
(ehdr).e_ident[EI_MAG2] == ELFMAG2 && \
(ehdr).e_ident[EI_MAG3] == ELFMAG3)
/* Values for e_type. */
#define ET_NONE 0 /* Unknown type. */
#define ET_REL 1 /* Relocatable. */
#define ET_EXEC 2 /* Executable. */
#define ET_DYN 3 /* Shared object. */
#define ET_CORE 4 /* Core file. */
#define ET_LOOS 0xfe00 /* First operating system specific. */
#define ET_HIOS 0xfeff /* Last operating system-specific. */
#define ET_LOPROC 0xff00 /* First processor-specific. */
#define ET_HIPROC 0xffff /* Last processor-specific. */
/* Values for e_machine. */
#define EM_NONE 0 /* Unknown machine. */
#define EM_M32 1 /* AT&T WE32100. */
#define EM_SPARC 2 /* Sun SPARC. */
#define EM_386 3 /* Intel i386. */
#define EM_68K 4 /* Motorola 68000. */
#define EM_88K 5 /* Motorola 88000. */
#define EM_860 7 /* Intel i860. */
#define EM_MIPS 8 /* MIPS R3000 Big-Endian only. */
#define EM_S370 9 /* IBM System/370. */
#define EM_MIPS_RS3_LE 10 /* MIPS R3000 Little-Endian. */
#define EM_PARISC 15 /* HP PA-RISC. */
#define EM_VPP500 17 /* Fujitsu VPP500. */
#define EM_SPARC32PLUS 18 /* SPARC v8plus. */
#define EM_960 19 /* Intel 80960. */
#define EM_PPC 20 /* PowerPC 32-bit. */
#define EM_PPC64 21 /* PowerPC 64-bit. */
#define EM_S390 22 /* IBM System/390. */
#define EM_V800 36 /* NEC V800. */
#define EM_FR20 37 /* Fujitsu FR20. */
#define EM_RH32 38 /* TRW RH-32. */
#define EM_RCE 39 /* Motorola RCE. */
#define EM_ARM 40 /* ARM. */
#define EM_SH 42 /* Hitachi SH. */
#define EM_SPARCV9 43 /* SPARC v9 64-bit. */
#define EM_TRICORE 44 /* Siemens TriCore embedded processor. */
#define EM_ARC 45 /* Argonaut RISC Core. */
#define EM_H8_300 46 /* Hitachi H8/300. */
#define EM_H8_300H 47 /* Hitachi H8/300H. */
#define EM_H8S 48 /* Hitachi H8S. */
#define EM_H8_500 49 /* Hitachi H8/500. */
#define EM_IA_64 50 /* Intel IA-64 Processor. */
#define EM_MIPS_X 51 /* Stanford MIPS-X. */
#define EM_COLDFIRE 52 /* Motorola ColdFire. */
#define EM_68HC12 53 /* Motorola M68HC12. */
#define EM_MMA 54 /* Fujitsu MMA. */
#define EM_PCP 55 /* Siemens PCP. */
#define EM_NCPU 56 /* Sony nCPU. */
#define EM_NDR1 57 /* Denso NDR1 microprocessor. */
#define EM_STARCORE 58 /* Motorola Star*Core processor. */
#define EM_ME16 59 /* Toyota ME16 processor. */
#define EM_ST100 60 /* STMicroelectronics ST100 processor. */
#define EM_TINYJ 61 /* Advanced Logic Corp. TinyJ processor. */
#define EM_X86_64 62 /* Advanced Micro Devices x86-64 */
#define EM_AMD64 EM_X86_64 /* Advanced Micro Devices x86-64 (compat) */
#define EM_PDSP 63 /* Sony DSP Processor. */
#define EM_FX66 66 /* Siemens FX66 microcontroller. */
#define EM_ST9PLUS 67 /* STMicroelectronics ST9+ 8/16
microcontroller. */
#define EM_ST7 68 /* STmicroelectronics ST7 8-bit
microcontroller. */
#define EM_68HC16 69 /* Motorola MC68HC16 microcontroller. */
#define EM_68HC11 70 /* Motorola MC68HC11 microcontroller. */
#define EM_68HC08 71 /* Motorola MC68HC08 microcontroller. */
#define EM_68HC05 72 /* Motorola MC68HC05 microcontroller. */
#define EM_SVX 73 /* Silicon Graphics SVx. */
#define EM_ST19 74 /* STMicroelectronics ST19 8-bit mc. */
#define EM_VAX 75 /* Digital VAX. */
#define EM_CRIS 76 /* Axis Communications 32-bit embedded
processor. */
#define EM_JAVELIN 77 /* Infineon Technologies 32-bit embedded
processor. */
#define EM_FIREPATH 78 /* Element 14 64-bit DSP Processor. */
#define EM_ZSP 79 /* LSI Logic 16-bit DSP Processor. */
#define EM_MMIX 80 /* Donald Knuth's educational 64-bit proc. */
#define EM_HUANY 81 /* Harvard University machine-independent
object files. */
#define EM_PRISM 82 /* SiTera Prism. */
#define EM_AVR 83 /* Atmel AVR 8-bit microcontroller. */
#define EM_FR30 84 /* Fujitsu FR30. */
#define EM_D10V 85 /* Mitsubishi D10V. */
#define EM_D30V 86 /* Mitsubishi D30V. */
#define EM_V850 87 /* NEC v850. */
#define EM_M32R 88 /* Mitsubishi M32R. */
#define EM_MN10300 89 /* Matsushita MN10300. */
#define EM_MN10200 90 /* Matsushita MN10200. */
#define EM_PJ 91 /* picoJava. */
#define EM_OPENRISC 92 /* OpenRISC 32-bit embedded processor. */
#define EM_ARC_A5 93 /* ARC Cores Tangent-A5. */
#define EM_XTENSA 94 /* Tensilica Xtensa Architecture. */
#define EM_VIDEOCORE 95 /* Alphamosaic VideoCore processor. */
#define EM_TMM_GPP 96 /* Thompson Multimedia General Purpose
Processor. */
#define EM_NS32K 97 /* National Semiconductor 32000 series. */
#define EM_TPC 98 /* Tenor Network TPC processor. */
#define EM_SNP1K 99 /* Trebia SNP 1000 processor. */
#define EM_ST200 100 /* STMicroelectronics ST200 microcontroller. */
#define EM_IP2K 101 /* Ubicom IP2xxx microcontroller family. */
#define EM_MAX 102 /* MAX Processor. */
#define EM_CR 103 /* National Semiconductor CompactRISC
microprocessor. */
#define EM_F2MC16 104 /* Fujitsu F2MC16. */
#define EM_MSP430 105 /* Texas Instruments embedded microcontroller
msp430. */
#define EM_BLACKFIN 106 /* Analog Devices Blackfin (DSP) processor. */
#define EM_SE_C33 107 /* S1C33 Family of Seiko Epson processors. */
#define EM_SEP 108 /* Sharp embedded microprocessor. */
#define EM_ARCA 109 /* Arca RISC Microprocessor. */
#define EM_UNICORE 110 /* Microprocessor series from PKU-Unity Ltd.
and MPRC of Peking University */
/* Non-standard or deprecated. */
#define EM_486 6 /* Intel i486. */
#define EM_MIPS_RS4_BE 10 /* MIPS R4000 Big-Endian */
#define EM_ALPHA_STD 41 /* Digital Alpha (standard value). */
#define EM_ALPHA 0x9026 /* Alpha (written in the absence of an ABI) */
/* Special section indexes. */
#define SHN_UNDEF 0 /* Undefined, missing, irrelevant. */
#define SHN_LORESERVE 0xff00 /* First of reserved range. */
#define SHN_LOPROC 0xff00 /* First processor-specific. */
#define SHN_HIPROC 0xff1f /* Last processor-specific. */
#define SHN_LOOS 0xff20 /* First operating system-specific. */
#define SHN_HIOS 0xff3f /* Last operating system-specific. */
#define SHN_ABS 0xfff1 /* Absolute values. */
#define SHN_COMMON 0xfff2 /* Common data. */
#define SHN_XINDEX 0xffff /* Escape -- index stored elsewhere. */
#define SHN_HIRESERVE 0xffff /* Last of reserved range. */
/* sh_type */
#define SHT_NULL 0 /* inactive */
#define SHT_PROGBITS 1 /* program defined information */
#define SHT_SYMTAB 2 /* symbol table section */
#define SHT_STRTAB 3 /* string table section */
#define SHT_RELA 4 /* relocation section with addends */
#define SHT_HASH 5 /* symbol hash table section */
#define SHT_DYNAMIC 6 /* dynamic section */
#define SHT_NOTE 7 /* note section */
#define SHT_NOBITS 8 /* no space section */
#define SHT_REL 9 /* relocation section - no addends */
#define SHT_SHLIB 10 /* reserved - purpose unknown */
#define SHT_DYNSYM 11 /* dynamic symbol table section */
#define SHT_INIT_ARRAY 14 /* Initialization function pointers. */
#define SHT_FINI_ARRAY 15 /* Termination function pointers. */
#define SHT_PREINIT_ARRAY 16 /* Pre-initialization function ptrs. */
#define SHT_GROUP 17 /* Section group. */
#define SHT_SYMTAB_SHNDX 18 /* Section indexes (see SHN_XINDEX). */
#define SHT_LOOS 0x60000000 /* First of OS specific semantics */
#define SHT_LOSUNW 0x6ffffff4
#define SHT_SUNW_dof 0x6ffffff4
#define SHT_SUNW_cap 0x6ffffff5
#define SHT_SUNW_SIGNATURE 0x6ffffff6
#define SHT_GNU_HASH 0x6ffffff6
#define SHT_SUNW_ANNOTATE 0x6ffffff7
#define SHT_SUNW_DEBUGSTR 0x6ffffff8
#define SHT_SUNW_DEBUG 0x6ffffff9
#define SHT_SUNW_move 0x6ffffffa
#define SHT_SUNW_COMDAT 0x6ffffffb
#define SHT_SUNW_syminfo 0x6ffffffc
#define SHT_SUNW_verdef 0x6ffffffd
#define SHT_GNU_verdef 0x6ffffffd /* Symbol versions provided */
#define SHT_SUNW_verneed 0x6ffffffe
#define SHT_GNU_verneed 0x6ffffffe /* Symbol versions required */
#define SHT_SUNW_versym 0x6fffffff
#define SHT_GNU_versym 0x6fffffff /* Symbol version table */
#define SHT_HISUNW 0x6fffffff
#define SHT_HIOS 0x6fffffff /* Last of OS specific semantics */
#define SHT_LOPROC 0x70000000 /* reserved range for processor */
#define SHT_AMD64_UNWIND 0x70000001 /* unwind information */
#define SHT_HIPROC 0x7fffffff /* specific section header types */
#define SHT_LOUSER 0x80000000 /* reserved range for application */
#define SHT_HIUSER 0xffffffff /* specific indexes */
/* Flags for sh_flags. */
#define SHF_WRITE 0x1 /* Section contains writable data. */
#define SHF_ALLOC 0x2 /* Section occupies memory. */
#define SHF_EXECINSTR 0x4 /* Section contains instructions. */
#define SHF_MERGE 0x10 /* Section may be merged. */
#define SHF_STRINGS 0x20 /* Section contains strings. */
#define SHF_INFO_LINK 0x40 /* sh_info holds section index. */
#define SHF_LINK_ORDER 0x80 /* Special ordering requirements. */
#define SHF_OS_NONCONFORMING 0x100 /* OS-specific processing required. */
#define SHF_GROUP 0x200 /* Member of section group. */
#define SHF_TLS 0x400 /* Section contains TLS data. */
#define SHF_MASKOS 0x0ff00000 /* OS-specific semantics. */
#define SHF_MASKPROC 0xf0000000 /* Processor-specific semantics. */
/* Values for p_type. */
#define PT_NULL 0 /* Unused entry. */
#define PT_LOAD 1 /* Loadable segment. */
#define PT_DYNAMIC 2 /* Dynamic linking information segment. */
#define PT_INTERP 3 /* Pathname of interpreter. */
#define PT_NOTE 4 /* Auxiliary information. */
#define PT_SHLIB 5 /* Reserved (not used). */
#define PT_PHDR 6 /* Location of program header itself. */
#define PT_TLS 7 /* Thread local storage segment */
#define PT_LOOS 0x60000000 /* First OS-specific. */
#define PT_SUNW_UNWIND 0x6464e550 /* amd64 UNWIND program header */
#define PT_GNU_EH_FRAME 0x6474e550
#define PT_LOSUNW 0x6ffffffa
#define PT_SUNWBSS 0x6ffffffa /* Sun Specific segment */
#define PT_SUNWSTACK 0x6ffffffb /* describes the stack segment */
#define PT_SUNWDTRACE 0x6ffffffc /* private */
#define PT_SUNWCAP 0x6ffffffd /* hard/soft capabilities segment */
#define PT_HISUNW 0x6fffffff
#define PT_HIOS 0x6fffffff /* Last OS-specific. */
#define PT_LOPROC 0x70000000 /* First processor-specific type. */
#define PT_HIPROC 0x7fffffff /* Last processor-specific type. */
/* Values for p_flags. */
#define PF_X 0x1 /* Executable. */
#define PF_W 0x2 /* Writable. */
#define PF_R 0x4 /* Readable. */
#define PF_MASKOS 0x0ff00000 /* Operating system-specific. */
#define PF_MASKPROC 0xf0000000 /* Processor-specific. */
/* Extended program header index. */
#define PN_XNUM 0xffff
/* Values for d_tag. */
#define DT_NULL 0 /* Terminating entry. */
#define DT_NEEDED 1 /* String table offset of a needed shared
library. */
#define DT_PLTRELSZ 2 /* Total size in bytes of PLT relocations. */
#define DT_PLTGOT 3 /* Processor-dependent address. */
#define DT_HASH 4 /* Address of symbol hash table. */
#define DT_STRTAB 5 /* Address of string table. */
#define DT_SYMTAB 6 /* Address of symbol table. */
#define DT_RELA 7 /* Address of ElfNN_Rela relocations. */
#define DT_RELASZ 8 /* Total size of ElfNN_Rela relocations. */
#define DT_RELAENT 9 /* Size of each ElfNN_Rela relocation entry. */
#define DT_STRSZ 10 /* Size of string table. */
#define DT_SYMENT 11 /* Size of each symbol table entry. */
#define DT_INIT 12 /* Address of initialization function. */
#define DT_FINI 13 /* Address of finalization function. */
#define DT_SONAME 14 /* String table offset of shared object
name. */
#define DT_RPATH 15 /* String table offset of library path. [sup] */
#define DT_SYMBOLIC 16 /* Indicates "symbolic" linking. [sup] */
#define DT_REL 17 /* Address of ElfNN_Rel relocations. */
#define DT_RELSZ 18 /* Total size of ElfNN_Rel relocations. */
#define DT_RELENT 19 /* Size of each ElfNN_Rel relocation. */
#define DT_PLTREL 20 /* Type of relocation used for PLT. */
#define DT_DEBUG 21 /* Reserved (not used). */
#define DT_TEXTREL 22 /* Indicates there may be relocations in
non-writable segments. [sup] */
#define DT_JMPREL 23 /* Address of PLT relocations. */
#define DT_BIND_NOW 24 /* [sup] */
#define DT_INIT_ARRAY 25 /* Address of the array of pointers to
initialization functions */
#define DT_FINI_ARRAY 26 /* Address of the array of pointers to
termination functions */
#define DT_INIT_ARRAYSZ 27 /* Size in bytes of the array of
initialization functions. */
#define DT_FINI_ARRAYSZ 28 /* Size in bytes of the array of
terminationfunctions. */
#define DT_RUNPATH 29 /* String table offset of a null-terminated
library search path string. */
#define DT_FLAGS 30 /* Object specific flag values. */
#define DT_ENCODING 32 /* Values greater than or equal to DT_ENCODING
and less than DT_LOOS follow the rules for
the interpretation of the d_un union
as follows: even == 'd_ptr', even == 'd_val'
or none */
#define DT_PREINIT_ARRAY 32 /* Address of the array of pointers to
pre-initialization functions. */
#define DT_PREINIT_ARRAYSZ 33 /* Size in bytes of the array of
pre-initialization functions. */
#define DT_MAXPOSTAGS 34 /* number of positive tags */
#define DT_LOOS 0x6000000d /* First OS-specific */
#define DT_SUNW_AUXILIARY 0x6000000d /* symbol auxiliary name */
#define DT_SUNW_RTLDINF 0x6000000e /* ld.so.1 info (private) */
#define DT_SUNW_FILTER 0x6000000f /* symbol filter name */
#define DT_SUNW_CAP 0x60000010 /* hardware/software */
#define DT_HIOS 0x6ffff000 /* Last OS-specific */
/*
* DT_* entries which fall between DT_VALRNGHI & DT_VALRNGLO use the
* Dyn.d_un.d_val field of the Elf*_Dyn structure.
*/
#define DT_VALRNGLO 0x6ffffd00
#define DT_CHECKSUM 0x6ffffdf8 /* elf checksum */
#define DT_PLTPADSZ 0x6ffffdf9 /* pltpadding size */
#define DT_MOVEENT 0x6ffffdfa /* move table entry size */
#define DT_MOVESZ 0x6ffffdfb /* move table size */
#define DT_FEATURE_1 0x6ffffdfc /* feature holder */
#define DT_POSFLAG_1 0x6ffffdfd /* flags for DT_* entries, effecting */
/* the following DT_* entry. */
/* See DF_P1_* definitions */
#define DT_SYMINSZ 0x6ffffdfe /* syminfo table size (in bytes) */
#define DT_SYMINENT 0x6ffffdff /* syminfo entry size (in bytes) */
#define DT_VALRNGHI 0x6ffffdff
/*
* DT_* entries which fall between DT_ADDRRNGHI & DT_ADDRRNGLO use the
* Dyn.d_un.d_ptr field of the Elf*_Dyn structure.
*
* If any adjustment is made to the ELF object after it has been
* built, these entries will need to be adjusted.
*/
#define DT_ADDRRNGLO 0x6ffffe00
#define DT_GNU_HASH 0x6ffffef5 /* GNU-style hash table */
#define DT_CONFIG 0x6ffffefa /* configuration information */
#define DT_DEPAUDIT 0x6ffffefb /* dependency auditing */
#define DT_AUDIT 0x6ffffefc /* object auditing */
#define DT_PLTPAD 0x6ffffefd /* pltpadding (sparcv9) */
#define DT_MOVETAB 0x6ffffefe /* move table */
#define DT_SYMINFO 0x6ffffeff /* syminfo table */
#define DT_ADDRRNGHI 0x6ffffeff
#define DT_VERSYM 0x6ffffff0 /* Address of versym section. */
#define DT_RELACOUNT 0x6ffffff9 /* number of RELATIVE relocations */
#define DT_RELCOUNT 0x6ffffffa /* number of RELATIVE relocations */
#define DT_FLAGS_1 0x6ffffffb /* state flags - see DF_1_* defs */
#define DT_VERDEF 0x6ffffffc /* Address of verdef section. */
#define DT_VERDEFNUM 0x6ffffffd /* Number of elems in verdef section */
#define DT_VERNEED 0x6ffffffe /* Address of verneed section. */
#define DT_VERNEEDNUM 0x6fffffff /* Number of elems in verneed section */
#define DT_LOPROC 0x70000000 /* First processor-specific type. */
#define DT_DEPRECATED_SPARC_REGISTER 0x7000001
#define DT_AUXILIARY 0x7ffffffd /* shared library auxiliary name */
#define DT_USED 0x7ffffffe /* ignored - same as needed */
#define DT_FILTER 0x7fffffff /* shared library filter name */
#define DT_HIPROC 0x7fffffff /* Last processor-specific type. */
/* Values for DT_FLAGS */
#define DF_ORIGIN 0x0001 /* Indicates that the object being loaded may
make reference to the $ORIGIN substitution
string */
#define DF_SYMBOLIC 0x0002 /* Indicates "symbolic" linking. */
#define DF_TEXTREL 0x0004 /* Indicates there may be relocations in
non-writable segments. */
#define DF_BIND_NOW 0x0008 /* Indicates that the dynamic linker should
process all relocations for the object
containing this entry before transferring
control to the program. */
#define DF_STATIC_TLS 0x0010 /* Indicates that the shared object or
executable contains code using a static
thread-local storage scheme. */
/* Values for DT_FLAGS_1 */
#define DF_1_BIND_NOW 0x00000001 /* Same as DF_BIND_NOW */
#define DF_1_GLOBAL 0x00000002 /* Set the RTLD_GLOBAL for object */
#define DF_1_NODELETE 0x00000008 /* Set the RTLD_NODELETE for object */
#define DF_1_NOOPEN 0x00000040 /* Do not allow loading on dlopen() */
#define DF_1_ORIGIN 0x00000080 /* Process $ORIGIN */
/* Values for n_type. Used in core files. */
#define NT_PRSTATUS 1 /* Process status. */
#define NT_FPREGSET 2 /* Floating point registers. */
#define NT_PRPSINFO 3 /* Process state info. */
/* Symbol Binding - ELFNN_ST_BIND - st_info */
#define STB_LOCAL 0 /* Local symbol */
#define STB_GLOBAL 1 /* Global symbol */
#define STB_WEAK 2 /* like global - lower precedence */
#define STB_LOOS 10 /* Reserved range for operating system */
#define STB_HIOS 12 /* specific semantics. */
#define STB_LOPROC 13 /* reserved range for processor */
#define STB_HIPROC 15 /* specific semantics. */
/* Symbol type - ELFNN_ST_TYPE - st_info */
#define STT_NOTYPE 0 /* Unspecified type. */
#define STT_OBJECT 1 /* Data object. */
#define STT_FUNC 2 /* Function. */
#define STT_SECTION 3 /* Section. */
#define STT_FILE 4 /* Source file. */
#define STT_COMMON 5 /* Uninitialized common block. */
#define STT_TLS 6 /* TLS object. */
#define STT_NUM 7
#define STT_LOOS 10 /* Reserved range for operating system */
#define STT_HIOS 12 /* specific semantics. */
#define STT_LOPROC 13 /* reserved range for processor */
#define STT_HIPROC 15 /* specific semantics. */
/* Symbol visibility - ELFNN_ST_VISIBILITY - st_other */
#define STV_DEFAULT 0x0 /* Default visibility (see binding). */
#define STV_INTERNAL 0x1 /* Special meaning in relocatable objects. */
#define STV_HIDDEN 0x2 /* Not visible. */
#define STV_PROTECTED 0x3 /* Visible but not preemptible. */
#define STV_EXPORTED 0x4
#define STV_SINGLETON 0x5
#define STV_ELIMINATE 0x6
/* Special symbol table indexes. */
#define STN_UNDEF 0 /* Undefined symbol index. */
/* Symbol versioning flags. */
#define VER_DEF_CURRENT 1
#define VER_DEF_IDX(x) VER_NDX(x)
#define VER_FLG_BASE 0x01
#define VER_FLG_WEAK 0x02
#define VER_NEED_CURRENT 1
#define VER_NEED_WEAK (1u << 15)
#define VER_NEED_HIDDEN VER_NDX_HIDDEN
#define VER_NEED_IDX(x) VER_NDX(x)
#define VER_NDX_LOCAL 0
#define VER_NDX_GLOBAL 1
#define VER_NDX_GIVEN 2
#define VER_NDX_HIDDEN (1u << 15)
#define VER_NDX(x) ((x) & ~(1u << 15))
#define CA_SUNW_NULL 0
#define CA_SUNW_HW_1 1 /* first hardware capabilities entry */
#define CA_SUNW_SF_1 2 /* first software capabilities entry */
/*
* Syminfo flag values
*/
#define SYMINFO_FLG_DIRECT 0x0001 /* symbol ref has direct association */
/* to object containing defn. */
#define SYMINFO_FLG_PASSTHRU 0x0002 /* ignored - see SYMINFO_FLG_FILTER */
#define SYMINFO_FLG_COPY 0x0004 /* symbol is a copy-reloc */
#define SYMINFO_FLG_LAZYLOAD 0x0008 /* object containing defn should be */
/* lazily-loaded */
#define SYMINFO_FLG_DIRECTBIND 0x0010 /* ref should be bound directly to */
/* object containing defn. */
#define SYMINFO_FLG_NOEXTDIRECT 0x0020 /* don't let an external reference */
/* directly bind to this symbol */
#define SYMINFO_FLG_FILTER 0x0002 /* symbol ref is associated to a */
#define SYMINFO_FLG_AUXILIARY 0x0040 /* standard or auxiliary filter */
/*
* Syminfo.si_boundto values.
*/
#define SYMINFO_BT_SELF 0xffff /* symbol bound to self */
#define SYMINFO_BT_PARENT 0xfffe /* symbol bound to parent */
#define SYMINFO_BT_NONE 0xfffd /* no special symbol binding */
#define SYMINFO_BT_EXTERN 0xfffc /* symbol defined as external */
#define SYMINFO_BT_LOWRESERVE 0xff00 /* beginning of reserved entries */
/*
* Syminfo version values.
*/
#define SYMINFO_NONE 0 /* Syminfo version */
#define SYMINFO_CURRENT 1
#define SYMINFO_NUM 2
/*
* Relocation types.
*
* All machine architectures are defined here to allow tools on one to
* handle others.
*/
#define R_386_NONE 0 /* No relocation. */
#define R_386_32 1 /* Add symbol value. */
#define R_386_PC32 2 /* Add PC-relative symbol value. */
#define R_386_GOT32 3 /* Add PC-relative GOT offset. */
#define R_386_PLT32 4 /* Add PC-relative PLT offset. */
#define R_386_COPY 5 /* Copy data from shared object. */
#define R_386_GLOB_DAT 6 /* Set GOT entry to data address. */
#define R_386_JMP_SLOT 7 /* Set GOT entry to code address. */
#define R_386_RELATIVE 8 /* Add load address of shared object. */
#define R_386_GOTOFF 9 /* Add GOT-relative symbol address. */
#define R_386_GOTPC 10 /* Add PC-relative GOT table address. */
#define R_386_TLS_TPOFF 14 /* Negative offset in static TLS block */
#define R_386_TLS_IE 15 /* Absolute address of GOT for -ve static TLS */
#define R_386_TLS_GOTIE 16 /* GOT entry for negative static TLS block */
#define R_386_TLS_LE 17 /* Negative offset relative to static TLS */
#define R_386_TLS_GD 18 /* 32 bit offset to GOT (index,off) pair */
#define R_386_TLS_LDM 19 /* 32 bit offset to GOT (index,zero) pair */
#define R_386_TLS_GD_32 24 /* 32 bit offset to GOT (index,off) pair */
#define R_386_TLS_GD_PUSH 25 /* pushl instruction for Sun ABI GD sequence */
#define R_386_TLS_GD_CALL 26 /* call instruction for Sun ABI GD sequence */
#define R_386_TLS_GD_POP 27 /* popl instruction for Sun ABI GD sequence */
#define R_386_TLS_LDM_32 28 /* 32 bit offset to GOT (index,zero) pair */
#define R_386_TLS_LDM_PUSH 29 /* pushl instruction for Sun ABI LD sequence */
#define R_386_TLS_LDM_CALL 30 /* call instruction for Sun ABI LD sequence */
#define R_386_TLS_LDM_POP 31 /* popl instruction for Sun ABI LD sequence */
#define R_386_TLS_LDO_32 32 /* 32 bit offset from start of TLS block */
#define R_386_TLS_IE_32 33 /* 32 bit offset to GOT static TLS offset entry */
#define R_386_TLS_LE_32 34 /* 32 bit offset within static TLS block */
#define R_386_TLS_DTPMOD32 35 /* GOT entry containing TLS index */
#define R_386_TLS_DTPOFF32 36 /* GOT entry containing TLS offset */
#define R_386_TLS_TPOFF32 37 /* GOT entry of -ve static TLS offset */
#define R_ARM_NONE 0 /* No relocation. */
#define R_ARM_PC24 1
#define R_ARM_ABS32 2
#define R_ARM_REL32 3
#define R_ARM_PC13 4
#define R_ARM_ABS16 5
#define R_ARM_ABS12 6
#define R_ARM_THM_ABS5 7
#define R_ARM_ABS8 8
#define R_ARM_SBREL32 9
#define R_ARM_THM_PC22 10
#define R_ARM_THM_PC8 11
#define R_ARM_AMP_VCALL9 12
#define R_ARM_SWI24 13
#define R_ARM_THM_SWI8 14
#define R_ARM_XPC25 15
#define R_ARM_THM_XPC22 16
#define R_ARM_COPY 20 /* Copy data from shared object. */
#define R_ARM_GLOB_DAT 21 /* Set GOT entry to data address. */
#define R_ARM_JUMP_SLOT 22 /* Set GOT entry to code address. */
#define R_ARM_RELATIVE 23 /* Add load address of shared object. */
#define R_ARM_GOTOFF 24 /* Add GOT-relative symbol address. */
#define R_ARM_GOTPC 25 /* Add PC-relative GOT table address. */
#define R_ARM_GOT32 26 /* Add PC-relative GOT offset. */
#define R_ARM_PLT32 27 /* Add PC-relative PLT offset. */
#define R_ARM_GNU_VTENTRY 100
#define R_ARM_GNU_VTINHERIT 101
#define R_ARM_RSBREL32 250
#define R_ARM_THM_RPC22 251
#define R_ARM_RREL32 252
#define R_ARM_RABS32 253
#define R_ARM_RPC24 254
#define R_ARM_RBASE 255
/* Name Value Field Calculation */
#define R_IA_64_NONE 0 /* None */
#define R_IA_64_IMM14 0x21 /* immediate14 S + A */
#define R_IA_64_IMM22 0x22 /* immediate22 S + A */
#define R_IA_64_IMM64 0x23 /* immediate64 S + A */
#define R_IA_64_DIR32MSB 0x24 /* word32 MSB S + A */
#define R_IA_64_DIR32LSB 0x25 /* word32 LSB S + A */
#define R_IA_64_DIR64MSB 0x26 /* word64 MSB S + A */
#define R_IA_64_DIR64LSB 0x27 /* word64 LSB S + A */
#define R_IA_64_GPREL22 0x2a /* immediate22 @gprel(S + A) */
#define R_IA_64_GPREL64I 0x2b /* immediate64 @gprel(S + A) */
#define R_IA_64_GPREL32MSB 0x2c /* word32 MSB @gprel(S + A) */
#define R_IA_64_GPREL32LSB 0x2d /* word32 LSB @gprel(S + A) */
#define R_IA_64_GPREL64MSB 0x2e /* word64 MSB @gprel(S + A) */
#define R_IA_64_GPREL64LSB 0x2f /* word64 LSB @gprel(S + A) */
#define R_IA_64_LTOFF22 0x32 /* immediate22 @ltoff(S + A) */
#define R_IA_64_LTOFF64I 0x33 /* immediate64 @ltoff(S + A) */
#define R_IA_64_PLTOFF22 0x3a /* immediate22 @pltoff(S + A) */
#define R_IA_64_PLTOFF64I 0x3b /* immediate64 @pltoff(S + A) */
#define R_IA_64_PLTOFF64MSB 0x3e /* word64 MSB @pltoff(S + A) */
#define R_IA_64_PLTOFF64LSB 0x3f /* word64 LSB @pltoff(S + A) */
#define R_IA_64_FPTR64I 0x43 /* immediate64 @fptr(S + A) */
#define R_IA_64_FPTR32MSB 0x44 /* word32 MSB @fptr(S + A) */
#define R_IA_64_FPTR32LSB 0x45 /* word32 LSB @fptr(S + A) */
#define R_IA_64_FPTR64MSB 0x46 /* word64 MSB @fptr(S + A) */
#define R_IA_64_FPTR64LSB 0x47 /* word64 LSB @fptr(S + A) */
#define R_IA_64_PCREL60B 0x48 /* immediate60 form1 S + A - P */
#define R_IA_64_PCREL21B 0x49 /* immediate21 form1 S + A - P */
#define R_IA_64_PCREL21M 0x4a /* immediate21 form2 S + A - P */
#define R_IA_64_PCREL21F 0x4b /* immediate21 form3 S + A - P */
#define R_IA_64_PCREL32MSB 0x4c /* word32 MSB S + A - P */
#define R_IA_64_PCREL32LSB 0x4d /* word32 LSB S + A - P */
#define R_IA_64_PCREL64MSB 0x4e /* word64 MSB S + A - P */
#define R_IA_64_PCREL64LSB 0x4f /* word64 LSB S + A - P */
#define R_IA_64_LTOFF_FPTR22 0x52 /* immediate22 @ltoff(@fptr(S + A)) */
#define R_IA_64_LTOFF_FPTR64I 0x53 /* immediate64 @ltoff(@fptr(S + A)) */
#define R_IA_64_LTOFF_FPTR32MSB 0x54 /* word32 MSB @ltoff(@fptr(S + A)) */
#define R_IA_64_LTOFF_FPTR32LSB 0x55 /* word32 LSB @ltoff(@fptr(S + A)) */
#define R_IA_64_LTOFF_FPTR64MSB 0x56 /* word64 MSB @ltoff(@fptr(S + A)) */
#define R_IA_64_LTOFF_FPTR64LSB 0x57 /* word64 LSB @ltoff(@fptr(S + A)) */
#define R_IA_64_SEGREL32MSB 0x5c /* word32 MSB @segrel(S + A) */
#define R_IA_64_SEGREL32LSB 0x5d /* word32 LSB @segrel(S + A) */
#define R_IA_64_SEGREL64MSB 0x5e /* word64 MSB @segrel(S + A) */
#define R_IA_64_SEGREL64LSB 0x5f /* word64 LSB @segrel(S + A) */
#define R_IA_64_SECREL32MSB 0x64 /* word32 MSB @secrel(S + A) */
#define R_IA_64_SECREL32LSB 0x65 /* word32 LSB @secrel(S + A) */
#define R_IA_64_SECREL64MSB 0x66 /* word64 MSB @secrel(S + A) */
#define R_IA_64_SECREL64LSB 0x67 /* word64 LSB @secrel(S + A) */
#define R_IA_64_REL32MSB 0x6c /* word32 MSB BD + A */
#define R_IA_64_REL32LSB 0x6d /* word32 LSB BD + A */
#define R_IA_64_REL64MSB 0x6e /* word64 MSB BD + A */
#define R_IA_64_REL64LSB 0x6f /* word64 LSB BD + A */
#define R_IA_64_LTV32MSB 0x74 /* word32 MSB S + A */
#define R_IA_64_LTV32LSB 0x75 /* word32 LSB S + A */
#define R_IA_64_LTV64MSB 0x76 /* word64 MSB S + A */
#define R_IA_64_LTV64LSB 0x77 /* word64 LSB S + A */
#define R_IA_64_PCREL21BI 0x79 /* immediate21 form1 S + A - P */
#define R_IA_64_PCREL22 0x7a /* immediate22 S + A - P */
#define R_IA_64_PCREL64I 0x7b /* immediate64 S + A - P */
#define R_IA_64_IPLTMSB 0x80 /* function descriptor MSB special */
#define R_IA_64_IPLTLSB 0x81 /* function descriptor LSB speciaal */
#define R_IA_64_SUB 0x85 /* immediate64 A - S */
#define R_IA_64_LTOFF22X 0x86 /* immediate22 special */
#define R_IA_64_LDXMOV 0x87 /* immediate22 special */
#define R_IA_64_TPREL14 0x91 /* imm14 @tprel(S + A) */
#define R_IA_64_TPREL22 0x92 /* imm22 @tprel(S + A) */
#define R_IA_64_TPREL64I 0x93 /* imm64 @tprel(S + A) */
#define R_IA_64_TPREL64MSB 0x96 /* word64 MSB @tprel(S + A) */
#define R_IA_64_TPREL64LSB 0x97 /* word64 LSB @tprel(S + A) */
#define R_IA_64_LTOFF_TPREL22 0x9a /* imm22 @ltoff(@tprel(S+A)) */
#define R_IA_64_DTPMOD64MSB 0xa6 /* word64 MSB @dtpmod(S + A) */
#define R_IA_64_DTPMOD64LSB 0xa7 /* word64 LSB @dtpmod(S + A) */
#define R_IA_64_LTOFF_DTPMOD22 0xaa /* imm22 @ltoff(@dtpmod(S+A)) */
#define R_IA_64_DTPREL14 0xb1 /* imm14 @dtprel(S + A) */
#define R_IA_64_DTPREL22 0xb2 /* imm22 @dtprel(S + A) */
#define R_IA_64_DTPREL64I 0xb3 /* imm64 @dtprel(S + A) */
#define R_IA_64_DTPREL32MSB 0xb4 /* word32 MSB @dtprel(S + A) */
#define R_IA_64_DTPREL32LSB 0xb5 /* word32 LSB @dtprel(S + A) */
#define R_IA_64_DTPREL64MSB 0xb6 /* word64 MSB @dtprel(S + A) */
#define R_IA_64_DTPREL64LSB 0xb7 /* word64 LSB @dtprel(S + A) */
#define R_IA_64_LTOFF_DTPREL22 0xba /* imm22 @ltoff(@dtprel(S+A)) */
#define R_MIPS_NONE 0 /* No reloc */
#define R_MIPS_16 1 /* Direct 16 bit */
#define R_MIPS_32 2 /* Direct 32 bit */
#define R_MIPS_REL32 3 /* PC relative 32 bit */
#define R_MIPS_26 4 /* Direct 26 bit shifted */
#define R_MIPS_HI16 5 /* High 16 bit */
#define R_MIPS_LO16 6 /* Low 16 bit */
#define R_MIPS_GPREL16 7 /* GP relative 16 bit */
#define R_MIPS_LITERAL 8 /* 16 bit literal entry */
#define R_MIPS_GOT16 9 /* 16 bit GOT entry */
#define R_MIPS_PC16 10 /* PC relative 16 bit */
#define R_MIPS_CALL16 11 /* 16 bit GOT entry for function */
#define R_MIPS_GPREL32 12 /* GP relative 32 bit */
#define R_MIPS_GOTHI16 21 /* GOT HI 16 bit */
#define R_MIPS_GOTLO16 22 /* GOT LO 16 bit */
#define R_MIPS_CALLHI16 30 /* upper 16 bit GOT entry for function */
#define R_MIPS_CALLLO16 31 /* lower 16 bit GOT entry for function */
#define R_PPC_NONE 0 /* No relocation. */
#define R_PPC_ADDR32 1
#define R_PPC_ADDR24 2
#define R_PPC_ADDR16 3
#define R_PPC_ADDR16_LO 4
#define R_PPC_ADDR16_HI 5
#define R_PPC_ADDR16_HA 6
#define R_PPC_ADDR14 7
#define R_PPC_ADDR14_BRTAKEN 8
#define R_PPC_ADDR14_BRNTAKEN 9
#define R_PPC_REL24 10
#define R_PPC_REL14 11
#define R_PPC_REL14_BRTAKEN 12
#define R_PPC_REL14_BRNTAKEN 13
#define R_PPC_GOT16 14
#define R_PPC_GOT16_LO 15
#define R_PPC_GOT16_HI 16
#define R_PPC_GOT16_HA 17
#define R_PPC_PLTREL24 18
#define R_PPC_COPY 19
#define R_PPC_GLOB_DAT 20
#define R_PPC_JMP_SLOT 21
#define R_PPC_RELATIVE 22
#define R_PPC_LOCAL24PC 23
#define R_PPC_UADDR32 24
#define R_PPC_UADDR16 25
#define R_PPC_REL32 26
#define R_PPC_PLT32 27
#define R_PPC_PLTREL32 28
#define R_PPC_PLT16_LO 29
#define R_PPC_PLT16_HI 30
#define R_PPC_PLT16_HA 31
#define R_PPC_SDAREL16 32
#define R_PPC_SECTOFF 33
#define R_PPC_SECTOFF_LO 34
#define R_PPC_SECTOFF_HI 35
#define R_PPC_SECTOFF_HA 36
/*
* 64-bit relocations
*/
#define R_PPC64_ADDR64 38
#define R_PPC64_ADDR16_HIGHER 39
#define R_PPC64_ADDR16_HIGHERA 40
#define R_PPC64_ADDR16_HIGHEST 41
#define R_PPC64_ADDR16_HIGHESTA 42
#define R_PPC64_UADDR64 43
#define R_PPC64_REL64 44
#define R_PPC64_PLT64 45
#define R_PPC64_PLTREL64 46
#define R_PPC64_TOC16 47
#define R_PPC64_TOC16_LO 48
#define R_PPC64_TOC16_HI 49
#define R_PPC64_TOC16_HA 50
#define R_PPC64_TOC 51
#define R_PPC64_DTPMOD64 68
#define R_PPC64_TPREL64 73
#define R_PPC64_DTPREL64 78
/*
* TLS relocations
*/
#define R_PPC_TLS 67
#define R_PPC_DTPMOD32 68
#define R_PPC_TPREL16 69
#define R_PPC_TPREL16_LO 70
#define R_PPC_TPREL16_HI 71
#define R_PPC_TPREL16_HA 72
#define R_PPC_TPREL32 73
#define R_PPC_DTPREL16 74
#define R_PPC_DTPREL16_LO 75
#define R_PPC_DTPREL16_HI 76
#define R_PPC_DTPREL16_HA 77
#define R_PPC_DTPREL32 78
#define R_PPC_GOT_TLSGD16 79
#define R_PPC_GOT_TLSGD16_LO 80
#define R_PPC_GOT_TLSGD16_HI 81
#define R_PPC_GOT_TLSGD16_HA 82
#define R_PPC_GOT_TLSLD16 83
#define R_PPC_GOT_TLSLD16_LO 84
#define R_PPC_GOT_TLSLD16_HI 85
#define R_PPC_GOT_TLSLD16_HA 86
#define R_PPC_GOT_TPREL16 87
#define R_PPC_GOT_TPREL16_LO 88
#define R_PPC_GOT_TPREL16_HI 89
#define R_PPC_GOT_TPREL16_HA 90
/*
* The remaining relocs are from the Embedded ELF ABI, and are not in the
* SVR4 ELF ABI.
*/
#define R_PPC_EMB_NADDR32 101
#define R_PPC_EMB_NADDR16 102
#define R_PPC_EMB_NADDR16_LO 103
#define R_PPC_EMB_NADDR16_HI 104
#define R_PPC_EMB_NADDR16_HA 105
#define R_PPC_EMB_SDAI16 106
#define R_PPC_EMB_SDA2I16 107
#define R_PPC_EMB_SDA2REL 108
#define R_PPC_EMB_SDA21 109
#define R_PPC_EMB_MRKREF 110
#define R_PPC_EMB_RELSEC16 111
#define R_PPC_EMB_RELST_LO 112
#define R_PPC_EMB_RELST_HI 113
#define R_PPC_EMB_RELST_HA 114
#define R_PPC_EMB_BIT_FLD 115
#define R_PPC_EMB_RELSDA 116
#define R_SPARC_NONE 0
#define R_SPARC_8 1
#define R_SPARC_16 2
#define R_SPARC_32 3
#define R_SPARC_DISP8 4
#define R_SPARC_DISP16 5
#define R_SPARC_DISP32 6
#define R_SPARC_WDISP30 7
#define R_SPARC_WDISP22 8
#define R_SPARC_HI22 9
#define R_SPARC_22 10
#define R_SPARC_13 11
#define R_SPARC_LO10 12
#define R_SPARC_GOT10 13
#define R_SPARC_GOT13 14
#define R_SPARC_GOT22 15
#define R_SPARC_PC10 16
#define R_SPARC_PC22 17
#define R_SPARC_WPLT30 18
#define R_SPARC_COPY 19
#define R_SPARC_GLOB_DAT 20
#define R_SPARC_JMP_SLOT 21
#define R_SPARC_RELATIVE 22
#define R_SPARC_UA32 23
#define R_SPARC_PLT32 24
#define R_SPARC_HIPLT22 25
#define R_SPARC_LOPLT10 26
#define R_SPARC_PCPLT32 27
#define R_SPARC_PCPLT22 28
#define R_SPARC_PCPLT10 29
#define R_SPARC_10 30
#define R_SPARC_11 31
#define R_SPARC_64 32
#define R_SPARC_OLO10 33
#define R_SPARC_HH22 34
#define R_SPARC_HM10 35
#define R_SPARC_LM22 36
#define R_SPARC_PC_HH22 37
#define R_SPARC_PC_HM10 38
#define R_SPARC_PC_LM22 39
#define R_SPARC_WDISP16 40
#define R_SPARC_WDISP19 41
#define R_SPARC_GLOB_JMP 42
#define R_SPARC_7 43
#define R_SPARC_5 44
#define R_SPARC_6 45
#define R_SPARC_DISP64 46
#define R_SPARC_PLT64 47
#define R_SPARC_HIX22 48
#define R_SPARC_LOX10 49
#define R_SPARC_H44 50
#define R_SPARC_M44 51
#define R_SPARC_L44 52
#define R_SPARC_REGISTER 53
#define R_SPARC_UA64 54
#define R_SPARC_UA16 55
#define R_SPARC_TLS_GD_HI22 56
#define R_SPARC_TLS_GD_LO10 57
#define R_SPARC_TLS_GD_ADD 58
#define R_SPARC_TLS_GD_CALL 59
#define R_SPARC_TLS_LDM_HI22 60
#define R_SPARC_TLS_LDM_LO10 61
#define R_SPARC_TLS_LDM_ADD 62
#define R_SPARC_TLS_LDM_CALL 63
#define R_SPARC_TLS_LDO_HIX22 64
#define R_SPARC_TLS_LDO_LOX10 65
#define R_SPARC_TLS_LDO_ADD 66
#define R_SPARC_TLS_IE_HI22 67
#define R_SPARC_TLS_IE_LO10 68
#define R_SPARC_TLS_IE_LD 69
#define R_SPARC_TLS_IE_LDX 70
#define R_SPARC_TLS_IE_ADD 71
#define R_SPARC_TLS_LE_HIX22 72
#define R_SPARC_TLS_LE_LOX10 73
#define R_SPARC_TLS_DTPMOD32 74
#define R_SPARC_TLS_DTPMOD64 75
#define R_SPARC_TLS_DTPOFF32 76
#define R_SPARC_TLS_DTPOFF64 77
#define R_SPARC_TLS_TPOFF32 78
#define R_SPARC_TLS_TPOFF64 79
#define R_X86_64_NONE 0 /* No relocation. */
#define R_X86_64_64 1 /* Add 64 bit symbol value. */
#define R_X86_64_PC32 2 /* PC-relative 32 bit signed sym value. */
#define R_X86_64_GOT32 3 /* PC-relative 32 bit GOT offset. */
#define R_X86_64_PLT32 4 /* PC-relative 32 bit PLT offset. */
#define R_X86_64_COPY 5 /* Copy data from shared object. */
#define R_X86_64_GLOB_DAT 6 /* Set GOT entry to data address. */
#define R_X86_64_JMP_SLOT 7 /* Set GOT entry to code address. */
#define R_X86_64_RELATIVE 8 /* Add load address of shared object. */
#define R_X86_64_GOTPCREL 9 /* Add 32 bit signed pcrel offset to GOT. */
#define R_X86_64_32 10 /* Add 32 bit zero extended symbol value */
#define R_X86_64_32S 11 /* Add 32 bit sign extended symbol value */
#define R_X86_64_16 12 /* Add 16 bit zero extended symbol value */
#define R_X86_64_PC16 13 /* Add 16 bit signed extended pc relative symbol value */
#define R_X86_64_8 14 /* Add 8 bit zero extended symbol value */
#define R_X86_64_PC8 15 /* Add 8 bit signed extended pc relative symbol value */
#define R_X86_64_DTPMOD64 16 /* ID of module containing symbol */
#define R_X86_64_DTPOFF64 17 /* Offset in TLS block */
#define R_X86_64_TPOFF64 18 /* Offset in static TLS block */
#define R_X86_64_TLSGD 19 /* PC relative offset to GD GOT entry */
#define R_X86_64_TLSLD 20 /* PC relative offset to LD GOT entry */
#define R_X86_64_DTPOFF32 21 /* Offset in TLS block */
#define R_X86_64_GOTTPOFF 22 /* PC relative offset to IE GOT entry */
#define R_X86_64_TPOFF32 23 /* Offset in static TLS block */
#endif /* !_SYS_ELF_COMMON_H_ */

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/*-
* Copyright (c) 1998 John D. Polstra.
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#ifndef _SYS_ELF_GENERIC_H_
#define _SYS_ELF_GENERIC_H_ 1
#include <sys/cdefs.h>
/*
* Definitions of generic ELF names which relieve applications from
* needing to know the word size.
*/
#if __ELF_WORD_SIZE != 32 && __ELF_WORD_SIZE != 64
#error "__ELF_WORD_SIZE must be defined as 32 or 64"
#endif
#define ELF_CLASS __CONCAT(ELFCLASS,__ELF_WORD_SIZE)
#if BYTE_ORDER == LITTLE_ENDIAN
#define ELF_DATA ELFDATA2LSB
#elif BYTE_ORDER == BIG_ENDIAN
#define ELF_DATA ELFDATA2MSB
#else
#error "Unknown byte order"
#endif
#define __elfN(x) __CONCAT(__CONCAT(__CONCAT(elf,__ELF_WORD_SIZE),_),x)
#define __ElfN(x) __CONCAT(__CONCAT(__CONCAT(Elf,__ELF_WORD_SIZE),_),x)
#define __ELFN(x) __CONCAT(__CONCAT(__CONCAT(ELF,__ELF_WORD_SIZE),_),x)
#define __ElfType(x) typedef __ElfN(x) __CONCAT(Elf_,x)
__ElfType(Addr);
__ElfType(Half);
__ElfType(Off);
__ElfType(Sword);
__ElfType(Word);
__ElfType(Ehdr);
__ElfType(Shdr);
__ElfType(Phdr);
__ElfType(Dyn);
__ElfType(Rel);
__ElfType(Rela);
__ElfType(Sym);
__ElfType(Verdef);
__ElfType(Verdaux);
__ElfType(Verneed);
__ElfType(Vernaux);
__ElfType(Versym);
/* Non-standard ELF types. */
__ElfType(Hashelt);
__ElfType(Size);
__ElfType(Ssize);
#define ELF_R_SYM __ELFN(R_SYM)
#define ELF_R_TYPE __ELFN(R_TYPE)
#define ELF_R_INFO __ELFN(R_INFO)
#define ELF_ST_BIND __ELFN(ST_BIND)
#define ELF_ST_TYPE __ELFN(ST_TYPE)
#define ELF_ST_INFO __ELFN(ST_INFO)
#endif /* !_SYS_ELF_GENERIC_H_ */

2
lib/Makefile
View file

@ -2,7 +2,7 @@
SUBDIR= csu libc libcurses libdriver libnetdriver libend libedit libm libsys \
libtimers libutil libbz2 libl libhgfs libz libfetch libarchive \
libvtreefs libaudiodriver libmthread
libvtreefs libaudiodriver libmthread libexec
.if ${COMPILER_TYPE} == "ack"
SUBDIR+= ack/libd ack/libe ack/libfp ack/liby

7
lib/libexec/Makefile Normal file
View file

@ -0,0 +1,7 @@
# Makefile for libexec
LIB= exec
SRCS= exec_aout.c exec_elf.c
.include <bsd.lib.mk>

86
lib/libexec/exec_aout.c Normal file
View file

@ -0,0 +1,86 @@
#define _SYSTEM 1
#include <minix/type.h>
#include <minix/const.h>
#include <a.out.h>
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <libexec.h>
int read_header_aout(
const char *exec_hdr, /* executable header */
size_t exec_len, /* executable file size */
int *sep_id, /* true iff sep I&D */
vir_bytes *text_bytes, /* place to return text size */
vir_bytes *data_bytes, /* place to return initialized data size */
vir_bytes *bss_bytes, /* place to return bss size */
phys_bytes *tot_bytes, /* place to return total size */
vir_bytes *pc, /* program entry point (initial PC) */
int *hdrlenp
)
{
/* Read the header and extract the text, data, bss and total sizes from it. */
struct exec *hdr; /* a.out header is read in here */
/* Read the header and check the magic number. The standard MINIX header
* is defined in <a.out.h>. It consists of 8 chars followed by 6 longs.
* Then come 4 more longs that are not used here.
* Byte 0: magic number 0x01
* Byte 1: magic number 0x03
* Byte 2: normal = 0x10 (not checked, 0 is OK), separate I/D = 0x20
* Byte 3: CPU type, Intel 16 bit = 0x04, Intel 32 bit = 0x10,
* Motorola = 0x0B, Sun SPARC = 0x17
* Byte 4: Header length = 0x20
* Bytes 5-7 are not used.
*
* Now come the 6 longs
* Bytes 8-11: size of text segments in bytes
* Bytes 12-15: size of initialized data segment in bytes
* Bytes 16-19: size of bss in bytes
* Bytes 20-23: program entry point
* Bytes 24-27: total memory allocated to program (text, data + stack)
* Bytes 28-31: size of symbol table in bytes
* The longs are represented in a machine dependent order,
* little-endian on the 8088, big-endian on the 68000.
* The header is followed directly by the text and data segments, and the
* symbol table (if any). The sizes are given in the header. Only the
* text and data segments are copied into memory by exec. The header is
* used here only. The symbol table is for the benefit of a debugger and
* is ignored here.
*/
assert(exec_hdr != NULL);
hdr = (struct exec *)exec_hdr;
if (exec_len < A_MINHDR) return(ENOEXEC);
/* Check magic number, cpu type, and flags. */
if (BADMAG(*hdr)) return(ENOEXEC);
#if (CHIP == INTEL && _WORD_SIZE == 2)
if (hdr->a_cpu != A_I8086) return(ENOEXEC);
#endif
#if (CHIP == INTEL && _WORD_SIZE == 4)
if (hdr->a_cpu != A_I80386) return(ENOEXEC);
#endif
if ((hdr->a_flags & ~(A_NSYM | A_EXEC | A_SEP)) != 0) return(ENOEXEC);
*sep_id = !!(hdr->a_flags & A_SEP); /* separate I & D or not */
/* Get text and data sizes. */
*text_bytes = (vir_bytes) hdr->a_text; /* text size in bytes */
*data_bytes = (vir_bytes) hdr->a_data; /* data size in bytes */
*bss_bytes = (vir_bytes) hdr->a_bss; /* bss size in bytes */
*tot_bytes = hdr->a_total; /* total bytes to allocate for prog */
if (*tot_bytes == 0) return(ENOEXEC);
if (!*sep_id) {
/* If I & D space is not separated, it is all considered data. Text=0*/
*data_bytes += *text_bytes;
*text_bytes = 0;
}
*pc = hdr->a_entry; /* initial address to start execution */
*hdrlenp = hdr->a_hdrlen & BYTE; /* header length */
return(OK);
}

128
lib/libexec/exec_elf.c Normal file
View file

@ -0,0 +1,128 @@
#define _SYSTEM 1
#include <minix/type.h>
#include <minix/const.h>
#include <sys/param.h>
#include <assert.h>
#include <unistd.h>
#include <errno.h>
#include <libexec.h>
/* For verbose logging */
#define ELF_DEBUG 0
/* Support only 32-bit ELF objects */
#define __ELF_WORD_SIZE 32
static int __elfN(check_header)(const Elf_Ehdr *hdr);
int read_header_elf(
const char *exec_hdr, /* executable header */
vir_bytes *text_addr, /* text virtual address */
vir_bytes *text_filebytes, /* text segment size (in the file) */
vir_bytes *text_membytes, /* text segment size (in memory) */
vir_bytes *data_addr, /* data virtual address */
vir_bytes *data_filebytes, /* data segment size (in the file) */
vir_bytes *data_membytes, /* data segment size (in memory) */
phys_bytes *tot_bytes, /* total size */
vir_bytes *pc, /* program entry point (initial PC) */
off_t *text_offset, /* file offset to text segment */
off_t *data_offset /* file offset to data segment */
)
{
const Elf_Ehdr *hdr = NULL;
const Elf_Phdr *phdr = NULL;
unsigned long seg_filebytes, seg_membytes, seg_addr;
int i = 0;
assert(exec_hdr != NULL);
*text_addr = *text_filebytes = *text_membytes = 0;
*data_addr = *data_filebytes = *data_membytes = 0;
*tot_bytes = *pc = *text_offset = *data_offset = 0;
hdr = (const Elf_Ehdr *)exec_hdr;
if (__elfN(check_header)(hdr) != OK || (hdr->e_type != ET_EXEC))
{
return ENOEXEC;
}
if ((hdr->e_phoff > PAGE_SIZE) ||
(hdr->e_phoff + hdr->e_phentsize * hdr->e_phnum) > PAGE_SIZE) {
return ENOEXEC;
}
phdr = (const Elf_Phdr *)(exec_hdr + hdr->e_phoff);
if (!aligned(phdr, Elf_Addr)) {
return ENOEXEC;
}
#if ELF_DEBUG
printf("Program header file offset (phoff): %d\n", hdr->e_phoff);
printf("Section header file offset (shoff): %d\n", hdr->e_shoff);
printf("Program header entry size (phentsize): %d\n", hdr->e_phentsize);
printf("Program header entry num (phnum): %d\n", hdr->e_phnum);
printf("Section header entry size (shentsize): %d\n", hdr->e_shentsize);
printf("Section header entry num (shnum): %d\n", hdr->e_shnum);
printf("Section name strings index (shstrndx): %d\n", hdr->e_shstrndx);
printf("Entry Point: 0x%x\n", hdr->e_entry);
#endif
for (i = 0; i < hdr->e_phnum; i++) {
switch (phdr[i].p_type) {
case PT_LOAD:
if (phdr[i].p_memsz == 0)
break;
seg_addr = phdr[i].p_vaddr;
seg_filebytes = phdr[i].p_filesz;
seg_membytes = round_page(phdr[i].p_memsz + phdr[i].p_vaddr -
trunc_page(phdr[i].p_vaddr));
if (hdr->e_entry >= phdr[i].p_vaddr &&
hdr->e_entry < (phdr[i].p_vaddr + phdr[i].p_memsz)) {
*text_addr = seg_addr;
*text_filebytes = seg_filebytes;
*text_membytes = seg_membytes;
*pc = (vir_bytes)hdr->e_entry;
*text_offset = phdr[i].p_offset;
} else {
*data_addr = seg_addr;
*data_filebytes = seg_filebytes;
*data_membytes = seg_membytes;
*data_offset = phdr[i].p_offset;
}
break;
default:
break;
}
}
*tot_bytes = 0; /* Use default stack size */
#if ELF_DEBUG
printf("Text addr: 0x%x\n", *text_addr);
printf("Text filebytes: 0x%x\n", *text_filebytes);
printf("Text membytes: 0x%x\n", *text_membytes);
printf("Data addr: 0x%x\n", *data_addr);
printf("Data filebyte: 0x%x\n", *data_filebytes);
printf("Data membytes: 0x%x\n", *data_membytes);
printf("Tot bytes: 0x%x\n", *tot_bytes);
printf("PC: 0x%x\n", *pc);
printf("Text offset: 0x%x\n", *text_offset);
printf("Data offset: 0x%x\n", *data_offset);
#endif
return OK;
}
static int __elfN(check_header)(const Elf_Ehdr *hdr)
{
if (!IS_ELF(*hdr) ||
hdr->e_ident[EI_DATA] != ELF_TARG_DATA ||
hdr->e_ident[EI_VERSION] != EV_CURRENT ||
hdr->e_phentsize != sizeof(Elf_Phdr) ||
hdr->e_version != ELF_TARG_VER)
return ENOEXEC;
return OK;
}

4
servers/rs/Makefile
View file

@ -4,8 +4,8 @@
PROG= rs
SRCS= exec.c main.c request.c manager.c table.c utility.c memory.c error.c
DPADD+= ${LIBSYS}
LDADD+= -lsys
DPADD+= ${LIBSYS} ${LIBEXEC}
LDADD+= -lsys -lexec
MAN=

356
servers/rs/exec.c
View file

@ -1,26 +1,35 @@
#include "inc.h"
#include <a.out.h>
#include <assert.h>
#include <libexec.h>
#include "exec.h"
#define BLOCK_SIZE 1024
static int do_exec(int proc_e, char *exec, size_t exec_len, char *progname,
char *frame, int frame_len);
FORWARD _PROTOTYPE( int read_header, (char *exec, size_t exec_len, int *sep_id,
vir_bytes *text_bytes, vir_bytes *data_bytes,
vir_bytes *bss_bytes, phys_bytes *tot_bytes, vir_bytes *pc,
int *hdrlenp) );
FORWARD _PROTOTYPE( int exec_newmem, (int proc_e, vir_bytes text_bytes,
vir_bytes data_bytes, vir_bytes bss_bytes, vir_bytes tot_bytes,
vir_bytes frame_len, int sep_id,
static int exec_newmem(int proc_e, vir_bytes text_addr,
vir_bytes text_bytes, vir_bytes data_addr,
vir_bytes data_bytes, vir_bytes tot_bytes,
vir_bytes frame_len, int sep_id, int is_elf,
dev_t st_dev, ino_t st_ino, time_t st_ctime, char *progname,
int new_uid, int new_gid,
vir_bytes *stack_topp, int *load_textp, int *allow_setuidp) );
FORWARD _PROTOTYPE( int exec_restart, (int proc_e, int result,
vir_bytes pc) );
FORWARD _PROTOTYPE( void patch_ptr, (char stack[ARG_MAX],
vir_bytes base) );
FORWARD _PROTOTYPE( int read_seg, (char *exec, size_t exec_len, off_t off,
int proc_e, int seg, phys_bytes seg_bytes) );
int new_uid, int new_gid, vir_bytes *stack_topp,
int *load_textp, int *allow_setuidp);
static void patch_ptr(char stack[ARG_MAX], vir_bytes base);
static int exec_restart(int proc_e, int result, vir_bytes pc);
static int read_seg(struct exec_info *execi, off_t off,
int proc_e, int seg, vir_bytes seg_addr, phys_bytes seg_bytes);
static int load_aout(struct exec_info *execi);
static int load_elf(struct exec_info *execi);
/* Array of loaders for different object formats */
struct exec_loaders {
int (*load_object)(struct exec_info *);
} static const exec_loaders[] = {
{ load_aout },
{ load_elf },
{ NULL }
};
int srv_execve(int proc_e, char *exec, size_t exec_len, char **argv,
char **Xenvp)
@ -112,107 +121,201 @@ int srv_execve(int proc_e, char *exec, size_t exec_len, char **argv,
return r;
}
static int do_exec(int proc_e, char *exec, size_t exec_len, char *progname,
char *frame, int frame_len)
{
int r;
int hdrlen, sep_id, load_text, allow_setuid;
int need_restart, error;
vir_bytes stack_top, vsp;
vir_bytes text_bytes, data_bytes, bss_bytes, pc;
phys_bytes tot_bytes;
off_t off;
uid_t new_uid;
gid_t new_gid;
vir_bytes vsp;
struct exec_info execi;
int i;
need_restart= 0;
error= 0;
execi.proc_e = proc_e;
execi.image = exec;
execi.image_len = exec_len;
strncpy(execi.progname, progname, PROC_NAME_LEN-1);
execi.progname[PROC_NAME_LEN-1] = '\0';
execi.frame_len = frame_len;
/* Read the file header and extract the segment sizes. */
r = read_header(exec, exec_len, &sep_id,
&text_bytes, &data_bytes, &bss_bytes,
&tot_bytes, &pc, &hdrlen);
if (r != OK)
{
printf("do_exec: read_header failed\n");
error= r;
goto fail;
for(i = 0; exec_loaders[i].load_object != NULL; i++) {
r = (*exec_loaders[i].load_object)(&execi);
/* Loaded successfully, so no need to try other loaders */
if (r == OK) break;
}
need_restart= 1;
new_uid= getuid();
new_gid= getgid();
/* XXX what should we use to identify the executable? */
r= exec_newmem(proc_e, text_bytes, data_bytes, bss_bytes, tot_bytes,
frame_len, sep_id, 0 /*dev*/, proc_e /*inum*/, 0 /*ctime*/,
progname, new_uid, new_gid, &stack_top, &load_text,
&allow_setuid);
if (r != OK)
{
printf("do_exec: exec_newmap failed: %d\n", r);
error= r;
goto fail;
/* No exec loader could load the object */
if (r != OK) {
printf("RS: do_exec: loading error %d\n", r);
return r;
}
/* Patch up stack and copy it from RS to new core image. */
vsp = stack_top;
vsp = execi.stack_top;
vsp -= frame_len;
patch_ptr(frame, vsp);
r = sys_datacopy(SELF, (vir_bytes) frame,
proc_e, (vir_bytes) vsp, (phys_bytes)frame_len);
if (r != OK) {
printf("RS: stack_top is 0x%lx; tried to copy to 0x%lx in %d\n",
stack_top, vsp, proc_e);
execi.stack_top, vsp, proc_e);
printf("do_exec: copying out new stack failed: %d\n", r);
error= r;
goto fail;
exec_restart(proc_e, r, execi.pc);
return r;
}
return exec_restart(proc_e, OK, execi.pc);
}
static int load_aout(struct exec_info *execi)
{
int r;
int hdrlen, sep_id, load_text, allow_setuid;
vir_bytes text_bytes, data_bytes, bss_bytes;
phys_bytes tot_bytes;
off_t off;
uid_t new_uid;
gid_t new_gid;
int proc_e;
assert(execi != NULL);
assert(execi->image != NULL);
proc_e = execi->proc_e;
/* Read the file header and extract the segment sizes. */
r = read_header_aout(execi->image, execi->image_len, &sep_id,
&text_bytes, &data_bytes, &bss_bytes,
&tot_bytes, &execi->pc, &hdrlen);
if (r != OK)
{
return r;
}
new_uid= getuid();
new_gid= getgid();
/* XXX what should we use to identify the executable? */
r= exec_newmem(proc_e, 0 /*text_addr*/, text_bytes,
0 /*data_addr*/, data_bytes + bss_bytes, tot_bytes,
execi->frame_len, sep_id, 0 /*is_elf*/, 0 /*dev*/, proc_e /*inum*/, 0 /*ctime*/,
execi->progname, new_uid, new_gid, &execi->stack_top, &load_text,
&allow_setuid);
if (r != OK)
{
printf("RS: load_aout: exec_newmem failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
off = hdrlen;
/* Read in text and data segments. */
if (load_text) {
r= read_seg(exec, exec_len, off, proc_e, T, text_bytes);
r= read_seg(execi, off, proc_e, T, 0, text_bytes);
if (r != OK)
{
printf("do_exec: read_seg failed: %d\n", r);
error= r;
goto fail;
printf("RS: load_aout: read_seg failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
}
else
printf("do_exec: not loading text segment\n");
printf("RS: load_aout: not loading text segment\n");
off += text_bytes;
r= read_seg(exec, exec_len, off, proc_e, D, data_bytes);
r= read_seg(execi, off, proc_e, D, 0, data_bytes);
if (r != OK)
{
printf("do_exec: read_seg failed: %d\n", r);
error= r;
goto fail;
printf("RS: load_aout: read_seg failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
return exec_restart(proc_e, OK, pc);
return OK;
}
fail:
printf("do_exec(fail): error = %d\n", error);
if (need_restart)
exec_restart(proc_e, error, pc);
static int load_elf(struct exec_info *execi)
{
int r;
int proc_e;
phys_bytes tot_bytes; /* total space for program, including gap */
vir_bytes text_addr, text_filebytes, text_membytes;
vir_bytes data_addr, data_filebytes, data_membytes;
off_t text_offset, data_offset;
int sep_id, is_elf, load_text, allow_setuid;
uid_t new_uid;
gid_t new_gid;
return error;
assert(execi != NULL);
assert(execi->image != NULL);
proc_e = execi->proc_e;
/* Read the file header and extract the segment sizes. */
r = read_header_elf(execi->image, &text_addr, &text_filebytes, &text_membytes,
&data_addr, &data_filebytes, &data_membytes,
&tot_bytes, &execi->pc, &text_offset, &data_offset);
if (r != OK) {
return(r);
}
new_uid= getuid();
new_gid= getgid();
sep_id = 1;
is_elf = 1;
r = exec_newmem(proc_e,
trunc_page(text_addr), text_membytes,
trunc_page(data_addr), data_membytes,
tot_bytes, execi->frame_len, sep_id, is_elf,
0 /*dev*/, proc_e /*inum*/, 0 /*ctime*/,
execi->progname, new_uid, new_gid,
&execi->stack_top, &load_text, &allow_setuid);
if (r != OK)
{
printf("RS: load_elf: exec_newmem failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
/* Read in text and data segments. */
if (load_text) {
r = read_seg(execi, text_offset, proc_e, T, text_addr, text_filebytes);
if (r != OK)
{
printf("RS: load_elf: read_seg failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
}
else
printf("RS: load_elf: not loading text segment\n");
r = read_seg(execi, data_offset, proc_e, D, data_addr, data_filebytes);
if (r != OK)
{
printf("RS: load_elf: read_seg failed: %d\n", r);
exec_restart(proc_e, r, execi->pc);
return r;
}
return(OK);
}
/*===========================================================================*
* exec_newmem *
*===========================================================================*/
PRIVATE int exec_newmem(
static int exec_newmem(
int proc_e,
vir_bytes text_addr,
vir_bytes text_bytes,
vir_bytes data_addr,
vir_bytes data_bytes,
vir_bytes bss_bytes,
vir_bytes tot_bytes,
vir_bytes frame_len,
int sep_id,
int is_elf,
dev_t st_dev,
ino_t st_ino,
time_t st_ctime,
@ -228,12 +331,14 @@ PRIVATE int exec_newmem(
struct exec_newmem e;
message m;
e.text_addr = text_addr;
e.text_bytes= text_bytes;
e.data_addr = data_addr;
e.data_bytes= data_bytes;
e.bss_bytes= bss_bytes;
e.tot_bytes= tot_bytes;
e.args_bytes= frame_len;
e.sep_id= sep_id;
e.is_elf= is_elf;
e.st_dev= st_dev;
e.st_ino= st_ino;
e.st_ctime= st_ctime;
@ -265,10 +370,7 @@ PRIVATE int exec_newmem(
/*===========================================================================*
* exec_restart *
*===========================================================================*/
PRIVATE int exec_restart(proc_e, result, pc)
int proc_e;
int result;
vir_bytes pc;
static int exec_restart(int proc_e, int result, vir_bytes pc)
{
int r;
message m;
@ -283,91 +385,13 @@ vir_bytes pc;
return m.m_type;
}
/*===========================================================================*
* read_header *
*===========================================================================*/
PRIVATE int read_header(exec, exec_len, sep_id, text_bytes, data_bytes,
bss_bytes, tot_bytes, pc, hdrlenp)
char *exec; /* executable image */
size_t exec_len; /* size of the image */
int *sep_id; /* true iff sep I&D */
vir_bytes *text_bytes; /* place to return text size */
vir_bytes *data_bytes; /* place to return initialized data size */
vir_bytes *bss_bytes; /* place to return bss size */
phys_bytes *tot_bytes; /* place to return total size */
vir_bytes *pc; /* program entry point (initial PC) */
int *hdrlenp;
{
/* Read the header and extract the text, data, bss and total sizes from it. */
struct exec hdr; /* a.out header is read in here */
/* Read the header and check the magic number. The standard MINIX header
* is defined in <a.out.h>. It consists of 8 chars followed by 6 longs.
* Then come 4 more longs that are not used here.
* Byte 0: magic number 0x01
* Byte 1: magic number 0x03
* Byte 2: normal = 0x10 (not checked, 0 is OK), separate I/D = 0x20
* Byte 3: CPU type, Intel 16 bit = 0x04, Intel 32 bit = 0x10,
* Motorola = 0x0B, Sun SPARC = 0x17
* Byte 4: Header length = 0x20
* Bytes 5-7 are not used.
*
* Now come the 6 longs
* Bytes 8-11: size of text segments in bytes
* Bytes 12-15: size of initialized data segment in bytes
* Bytes 16-19: size of bss in bytes
* Bytes 20-23: program entry point
* Bytes 24-27: total memory allocated to program (text, data + stack)
* Bytes 28-31: size of symbol table in bytes
* The longs are represented in a machine dependent order,
* little-endian on the 8088, big-endian on the 68000.
* The header is followed directly by the text and data segments, and the
* symbol table (if any). The sizes are given in the header. Only the
* text and data segments are copied into memory by exec. The header is
* used here only. The symbol table is for the benefit of a debugger and
* is ignored here.
*/
if (exec_len < sizeof(hdr)) return(ENOEXEC);
memcpy(&hdr, exec, sizeof(hdr));
/* Check magic number, cpu type, and flags. */
if (BADMAG(hdr)) return(ENOEXEC);
#if (CHIP == INTEL && _WORD_SIZE == 2)
if (hdr.a_cpu != A_I8086) return(ENOEXEC);
#endif
#if (CHIP == INTEL && _WORD_SIZE == 4)
if (hdr.a_cpu != A_I80386) return(ENOEXEC);
#endif
if ((hdr.a_flags & ~(A_NSYM | A_EXEC | A_SEP)) != 0) return(ENOEXEC);
*sep_id = !!(hdr.a_flags & A_SEP); /* separate I & D or not */
/* Get text and data sizes. */
*text_bytes = (vir_bytes) hdr.a_text; /* text size in bytes */
*data_bytes = (vir_bytes) hdr.a_data; /* data size in bytes */
*bss_bytes = (vir_bytes) hdr.a_bss; /* bss size in bytes */
*tot_bytes = hdr.a_total; /* total bytes to allocate for prog */
if (*tot_bytes == 0) return(ENOEXEC);
if (!*sep_id) {
/* If I & D space is not separated, it is all considered data. Text=0*/
*data_bytes += *text_bytes;
*text_bytes = 0;
}
*pc = hdr.a_entry; /* initial address to start execution */
*hdrlenp = hdr.a_hdrlen & BYTE; /* header length */
return(OK);
}
/*===========================================================================*
* patch_ptr *
*===========================================================================*/
PRIVATE void patch_ptr(stack, base)
char stack[ARG_MAX]; /* pointer to stack image within PM */
vir_bytes base; /* virtual address of stack base inside user */
static void patch_ptr(
char stack[ARG_MAX], /* pointer to stack image within PM */
vir_bytes base /* virtual address of stack base inside user */
)
{
/* When doing an exec(name, argv, envp) call, the user builds up a stack
* image with arg and env pointers relative to the start of the stack. Now
@ -397,13 +421,14 @@ vir_bytes base; /* virtual address of stack base inside user */
/*===========================================================================*
* read_seg *
*===========================================================================*/
PRIVATE int read_seg(exec, exec_len, off, proc_e, seg, seg_bytes)
char *exec; /* executable image */
size_t exec_len; /* size of the image */
off_t off; /* offset in file */
int proc_e; /* process number (endpoint) */
int seg; /* T, D, or S */
phys_bytes seg_bytes; /* how much is to be transferred? */
static int read_seg(
struct exec_info *execi, /* various data needed for exec */
off_t off, /* offset in file */
int proc_e, /* process number (endpoint) */
int seg, /* T, D, or S */
vir_bytes seg_addr, /* address to load segment */
phys_bytes seg_bytes /* how much is to be transferred? */
)
{
/*
* The byte count on read is usually smaller than the segment count, because
@ -413,8 +438,9 @@ phys_bytes seg_bytes; /* how much is to be transferred? */
int r;
if (off+seg_bytes > exec_len) return ENOEXEC;
r= sys_vircopy(SELF, D, (vir_bytes)exec+off, proc_e, seg, 0, seg_bytes);
assert((seg == T)||(seg == D));
if (off+seg_bytes > execi->image_len) return ENOEXEC;
r= sys_vircopy(SELF, D, ((vir_bytes)execi->image)+off, proc_e, seg, seg_addr, seg_bytes);
return r;
}

14
servers/rs/exec.h Normal file
View file

@ -0,0 +1,14 @@
#ifndef _RS_EXEC_H_
#define _RS_EXEC_H_ 1
struct exec_info {
int proc_e; /* Process endpoint */
char *image; /* Executable image */
size_t image_len; /* Size of executable image */
vir_bytes pc; /* Entry point of exec file */
vir_bytes stack_top; /* Top of the stack */
vir_bytes frame_len; /* Stack size */
char progname[PROC_NAME_LEN]; /* Program name */
};
#endif /* !_RS_EXEC_H_ */

4
servers/vfs/Makefile
View file

@ -6,8 +6,8 @@ SRCS= main.c open.c read.c write.c pipe.c dmap.c \
lock.c misc.c utility.c select.c table.c \
vnode.c vmnt.c request.c fscall.c gcov.c
DPADD+= ${LIBSYS} ${LIBTIMERS}
LDADD+= -lsys -ltimers
DPADD+= ${LIBSYS} ${LIBTIMERS} ${LIBEXEC}
LDADD+= -lsys -ltimers -lexec
MAN=

441
servers/vfs/exec.c
View file

@ -22,66 +22,68 @@
#include <minix/u64.h>
#include <a.out.h>
#include <signal.h>
#include <stdlib.h>
#include <string.h>
#include <dirent.h>
#include <sys/param.h>
#include "fproc.h"
#include "param.h"
#include "vnode.h"
#include "vmnt.h"
#include <minix/vfsif.h>
#include <assert.h>
#include <libexec.h>
#include "exec.h"
FORWARD _PROTOTYPE( int exec_newmem, (int proc_e, vir_bytes text_bytes,
vir_bytes data_bytes, vir_bytes bss_bytes, vir_bytes tot_bytes,
vir_bytes frame_len, int sep_id,
dev_t st_dev, ino_t st_ino, time_t st_ctime, char *progname,
int new_uid, int new_gid,
vir_bytes *stack_topp, int *load_textp, int *allow_setuidp) );
FORWARD _PROTOTYPE( int read_header, (struct vnode *vp, int *sep_id,
vir_bytes *text_bytes, vir_bytes *data_bytes,
vir_bytes *bss_bytes, phys_bytes *tot_bytes, vir_bytes *pc,
int *hdrlenp) );
FORWARD _PROTOTYPE( int patch_stack, (struct vnode *vp,
char stack[ARG_MAX], vir_bytes *stk_bytes) );
FORWARD _PROTOTYPE( int insert_arg, (char stack[ARG_MAX],
vir_bytes *stk_bytes, char *arg, int replace) );
FORWARD _PROTOTYPE( void patch_ptr, (char stack[ARG_MAX],
vir_bytes base) );
FORWARD _PROTOTYPE( int read_seg, (struct vnode *vp, off_t off,
int proc_e, int seg, phys_bytes seg_bytes) );
FORWARD _PROTOTYPE( void clo_exec, (struct fproc *rfp) );
static int exec_newmem(int proc_e, vir_bytes text_addr, vir_bytes text_bytes,
vir_bytes data_addr, vir_bytes data_bytes,
vir_bytes tot_bytes, vir_bytes frame_len, int sep_id,
int is_elf, dev_t st_dev, ino_t st_ino, time_t st_ctime,
char *progname, int new_uid, int new_gid,
vir_bytes *stack_topp, int *load_textp,
int *allow_setuidp);
static int is_script(const char *exec_hdr, size_t exec_len);
static int patch_stack(struct vnode *vp, char stack[ARG_MAX],
vir_bytes *stk_bytes);
static int insert_arg(char stack[ARG_MAX], vir_bytes *stk_bytes, char *arg,
int replace);
static void patch_ptr(char stack[ARG_MAX], vir_bytes base);
static void clo_exec(struct fproc *rfp);
static int read_seg(struct vnode *vp, off_t off, int proc_e, int seg,
vir_bytes seg_addr, phys_bytes seg_bytes);
static int load_aout(struct exec_info *execi);
static int load_elf(struct exec_info *execi);
static int map_header(char **exec_hdr, const struct vnode *vp);
#define ESCRIPT (-2000) /* Returned by read_header for a #! script. */
#define PTRSIZE sizeof(char *) /* Size of pointers in argv[] and envp[]. */
/* Array of loaders for different object file formats */
struct exec_loaders {
int (*load_object)(struct exec_info *);
} static const exec_loaders[] = {
{ load_aout },
{ load_elf },
{ NULL }
};
/*===========================================================================*
* pm_exec *
*===========================================================================*/
PUBLIC int pm_exec(proc_e, path, path_len, frame, frame_len, pc)
int proc_e;
char *path;
vir_bytes path_len;
char *frame;
vir_bytes frame_len;
vir_bytes *pc;
PUBLIC int pm_exec(int proc_e, char *path, vir_bytes path_len, char *frame,
vir_bytes frame_len, vir_bytes *pc)
{
/* Perform the execve(name, argv, envp) call. The user library builds a
* complete stack image, including pointers, args, environ, etc. The stack
* is copied to a buffer inside VFS, and then to the new core image.
*/
int r, r1, sep_id=0, round, proc_s, hdrlen=0, load_text, allow_setuid;
vir_bytes text_bytes=0, data_bytes=0, bss_bytes=0;
phys_bytes tot_bytes=0; /* total space for program, including gap */
vir_bytes stack_top, vsp;
off_t off;
uid_t new_uid;
gid_t new_gid;
int r, r1, round, proc_s;
vir_bytes vsp;
struct fproc *rfp;
struct vnode *vp;
time_t v_ctime;
char *cp;
struct stat sb;
char progname[PROC_NAME_LEN];
static char mbuf[ARG_MAX]; /* buffer for stack and zeroes */
struct exec_info execi;
int i;
okendpt(proc_e, &proc_s);
rfp = fp = &fproc[proc_s];
@ -102,8 +104,8 @@ vir_bytes *pc;
}
/* The default is to keep the original user and group IDs */
new_uid = rfp->fp_effuid;
new_gid = rfp->fp_effgid;
execi.new_uid = rfp->fp_effuid;
execi.new_gid = rfp->fp_effgid;
for (round= 0; round < 2; round++) {
/* round = 0 (first attempt), or 1 (interpreted script) */
@ -111,11 +113,12 @@ vir_bytes *pc;
/* Save the name of the program */
(cp= strrchr(user_fullpath, '/')) ? cp++ : (cp= user_fullpath);
strncpy(progname, cp, PROC_NAME_LEN-1);
progname[PROC_NAME_LEN-1] = '\0';
strncpy(execi.progname, cp, PROC_NAME_LEN-1);
execi.progname[PROC_NAME_LEN-1] = '\0';
/* Open executable */
if ((vp = eat_path(PATH_NOFLAGS, fp)) == NULL) return(err_code);
execi.vp = vp;
if ((vp->v_mode & I_TYPE) != I_REGULAR)
r = ENOEXEC;
@ -123,23 +126,25 @@ vir_bytes *pc;
r = r1;
else
r = req_stat(vp->v_fs_e, vp->v_inode_nr, VFS_PROC_NR,
(char *) &sb, 0);
(char *) &(execi.sb), 0);
if (r != OK) {
put_vnode(vp);
return(r);
}
v_ctime = sb.st_ctime;
if (round == 0) {
/* Deal with setuid/setgid executables */
if (vp->v_mode & I_SET_UID_BIT) new_uid = vp->v_uid;
if (vp->v_mode & I_SET_GID_BIT) new_gid = vp->v_gid;
if (vp->v_mode & I_SET_UID_BIT) execi.new_uid = vp->v_uid;
if (vp->v_mode & I_SET_GID_BIT) execi.new_gid = vp->v_gid;
}
/* Read the file header and extract the segment sizes. */
r = read_header(vp, &sep_id, &text_bytes, &data_bytes, &bss_bytes,
&tot_bytes, pc, &hdrlen);
if (r != ESCRIPT || round != 0)
r = map_header(&execi.hdr, execi.vp);
if (r != OK) {
put_vnode(vp);
return(r);
}
if (!is_script(execi.hdr, execi.vp->v_size) || round != 0)
break;
/* Get fresh copy of the file name. */
@ -147,27 +152,32 @@ vir_bytes *pc;
printf("VFS pm_exec: 2nd fetch_name failed\n");
else if ((r = patch_stack(vp, mbuf, &frame_len)) != OK)
printf("VFS pm_exec: patch_stack failed\n");
free(execi.hdr);
put_vnode(vp);
if (r != OK) return(r);
}
if (r != OK) {
execi.proc_e = proc_e;
execi.frame_len = frame_len;
for(i = 0; exec_loaders[i].load_object != NULL; i++) {
r = (*exec_loaders[i].load_object)(&execi);
/* Loaded successfully, so no need to try other loaders */
if (r == OK) break;
}
free(execi.hdr);
put_vnode(vp);
/* No exec loader could load the object */
if (r != OK) {
return(ENOEXEC);
}
r = exec_newmem(proc_e, text_bytes, data_bytes, bss_bytes, tot_bytes,
frame_len, sep_id, vp->v_dev, vp->v_inode_nr, v_ctime,
progname, new_uid, new_gid, &stack_top, &load_text,
&allow_setuid);
if (r != OK) {
printf("VFS: pm_exec: exec_newmem failed: %d\n", r);
put_vnode(vp);
return(r);
}
/* Save off PC */
*pc = execi.pc;
/* Patch up stack and copy it from VFS to new core image. */
vsp = stack_top;
vsp = execi.stack_top;
vsp -= frame_len;
patch_ptr(mbuf, vsp);
if ((r = sys_datacopy(SELF, (vir_bytes) mbuf, proc_e, (vir_bytes) vsp,
@ -176,19 +186,12 @@ vir_bytes *pc;
return(r);
}
off = hdrlen;
/* Read in text and data segments. */
if (load_text) r = read_seg(vp, off, proc_e, T, text_bytes);
off += text_bytes;
if (r == OK) r = read_seg(vp, off, proc_e, D, data_bytes);
put_vnode(vp);
if (r != OK) return(r);
clo_exec(rfp);
if (allow_setuid) {
rfp->fp_effuid = new_uid;
rfp->fp_effgid = new_gid;
if (execi.allow_setuid) {
rfp->fp_effuid = execi.new_uid;
rfp->fp_effgid = execi.new_gid;
}
/* This child has now exec()ced. */
@ -197,18 +200,124 @@ vir_bytes *pc;
return(OK);
}
static int load_aout(struct exec_info *execi)
{
int r;
struct vnode *vp;
int proc_e;
off_t off;
int hdrlen;
int sep_id;
vir_bytes text_bytes, data_bytes, bss_bytes;
phys_bytes tot_bytes; /* total space for program, including gap */
assert(execi != NULL);
assert(execi->hdr != NULL);
assert(execi->vp != NULL);
proc_e = execi->proc_e;
vp = execi->vp;
/* Read the file header and extract the segment sizes. */
r = read_header_aout(execi->hdr, execi->vp->v_size, &sep_id,
&text_bytes, &data_bytes, &bss_bytes,
&tot_bytes, &execi->pc, &hdrlen);
if (r != OK) return(r);
r = exec_newmem(proc_e, 0 /* text_addr */, text_bytes,
0 /* data_addr */, data_bytes + bss_bytes, tot_bytes,
execi->frame_len, sep_id, 0 /* is_elf */, vp->v_dev, vp->v_inode_nr,
execi->sb.st_ctime,
execi->progname, execi->new_uid, execi->new_gid,
&execi->stack_top, &execi->load_text, &execi->allow_setuid);
if (r != OK) {
printf("VFS: load_aout: exec_newmem failed: %d\n", r);
return(r);
}
off = hdrlen;
/* Read in text and data segments. */
if (execi->load_text) r = read_seg(vp, off, proc_e, T, 0, text_bytes);
off += text_bytes;
if (r == OK) r = read_seg(vp, off, proc_e, D, 0, data_bytes);
if (r != OK) {
printf("VFS: load_aout: read_seg failed: %d\n", r);
return (r);
}
return(OK);
}
static int load_elf(struct exec_info *execi)
{
int r;
struct vnode *vp;
int proc_e;
phys_bytes tot_bytes; /* total space for program, including gap */
vir_bytes text_addr, text_filebytes, text_membytes;
vir_bytes data_addr, data_filebytes, data_membytes;
off_t text_offset, data_offset;
int sep_id, is_elf;
assert(execi != NULL);
assert(execi->hdr != NULL);
assert(execi->vp != NULL);
proc_e = execi->proc_e;
vp = execi->vp;
/* Read the file header and extract the segment sizes. */
r = read_header_elf(execi->hdr, &text_addr, &text_filebytes, &text_membytes,
&data_addr, &data_filebytes, &data_membytes,
&tot_bytes, &execi->pc, &text_offset, &data_offset);
if (r != OK) return(r);
sep_id = 1;
is_elf = 1;
r = exec_newmem(proc_e,
trunc_page(text_addr), text_membytes,
trunc_page(data_addr), data_membytes,
tot_bytes, execi->frame_len, sep_id, is_elf,
vp->v_dev, vp->v_inode_nr, execi->sb.st_ctime,
execi->progname, execi->new_uid, execi->new_gid,
&execi->stack_top, &execi->load_text, &execi->allow_setuid);
if (r != OK) {
printf("VFS: load_elf: exec_newmem failed: %d\n", r);
return(r);
}
/* Read in text and data segments. */
if (execi->load_text)
r = read_seg(vp, text_offset, proc_e, T, text_addr, text_filebytes);
if (r == OK)
r = read_seg(vp, data_offset, proc_e, D, data_addr, data_filebytes);
if (r != OK) {
printf("VFS: load_elf: read_seg failed: %d\n", r);
return (r);
}
return(OK);
}
/*===========================================================================*
* exec_newmem *
*===========================================================================*/
PRIVATE int exec_newmem(
static int exec_newmem(
int proc_e,
vir_bytes text_addr,
vir_bytes text_bytes,
vir_bytes data_addr,
vir_bytes data_bytes,
vir_bytes bss_bytes,
vir_bytes tot_bytes,
vir_bytes frame_len,
int sep_id,
int is_elf,
dev_t st_dev,
ino_t st_ino,
time_t st_ctime,
@ -224,12 +333,14 @@ PRIVATE int exec_newmem(
struct exec_newmem e;
message m;
e.text_addr = text_addr;
e.text_bytes = text_bytes;
e.data_addr = data_addr;
e.data_bytes = data_bytes;
e.bss_bytes = bss_bytes;
e.tot_bytes = tot_bytes;
e.args_bytes = frame_len;
e.sep_id = sep_id;
e.is_elf = is_elf;
e.st_dev = st_dev;
e.st_ino = st_ino;
e.st_ctime = st_ctime;
@ -250,106 +361,25 @@ PRIVATE int exec_newmem(
return(m.m_type);
}
/*===========================================================================*
* read_header *
*===========================================================================*/
PRIVATE int read_header(
struct vnode *vp, /* inode for reading exec file */
int *sep_id, /* true iff sep I&D */
vir_bytes *text_bytes, /* place to return text size */
vir_bytes *data_bytes, /* place to return initialized data size */
vir_bytes *bss_bytes, /* place to return bss size */
phys_bytes *tot_bytes, /* place to return total size */
vir_bytes *pc, /* program entry point (initial PC) */
int *hdrlenp
)
/* Is Interpreted script? */
static int is_script(const char *exec_hdr, size_t exec_len)
{
/* Read the header and extract the text, data, bss and total sizes from it. */
off_t pos;
int r;
u64_t new_pos;
unsigned int cum_io;
struct exec hdr; /* a.out header is read in here */
assert(exec_hdr != NULL);
/* Read the header and check the magic number. The standard MINIX header
* is defined in <a.out.h>. It consists of 8 chars followed by 6 longs.
* Then come 4 more longs that are not used here.
* Byte 0: magic number 0x01
* Byte 1: magic number 0x03
* Byte 2: normal = 0x10 (not checked, 0 is OK), separate I/D = 0x20
* Byte 3: CPU type, Intel 16 bit = 0x04, Intel 32 bit = 0x10,
* Motorola = 0x0B, Sun SPARC = 0x17
* Byte 4: Header length = 0x20
* Bytes 5-7 are not used.
*
* Now come the 6 longs
* Bytes 8-11: size of text segments in bytes
* Bytes 12-15: size of initialized data segment in bytes
* Bytes 16-19: size of bss in bytes
* Bytes 20-23: program entry point
* Bytes 24-27: total memory allocated to program (text, data + stack)
* Bytes 28-31: size of symbol table in bytes
* The longs are represented in a machine dependent order,
* little-endian on the 8088, big-endian on the 68000.
* The header is followed directly by the text and data segments, and the
* symbol table (if any). The sizes are given in the header. Only the
* text and data segments are copied into memory by exec. The header is
* used here only. The symbol table is for the benefit of a debugger and
* is ignored here.
*/
pos= 0; /* Read from the start of the file */
/* Issue request */
r = req_readwrite(vp->v_fs_e, vp->v_inode_nr, cvul64(pos), READING,
VFS_PROC_NR, (char*)&hdr, sizeof(hdr), &new_pos, &cum_io);
if (r != OK) return r;
/* Interpreted script? */
if (((char*)&hdr)[0] == '#' && ((char*)&hdr)[1] == '!' && vp->v_size >= 2)
return(ESCRIPT);
if (vp->v_size < A_MINHDR) return(ENOEXEC);
/* Check magic number, cpu type, and flags. */
if (BADMAG(hdr)) return(ENOEXEC);
#if (CHIP == INTEL && _WORD_SIZE == 2)
if (hdr.a_cpu != A_I8086) return(ENOEXEC);
#endif
#if (CHIP == INTEL && _WORD_SIZE == 4)
if (hdr.a_cpu != A_I80386) return(ENOEXEC);
#endif
if ((hdr.a_flags & ~(A_NSYM | A_EXEC | A_SEP)) != 0) return(ENOEXEC);
*sep_id = !!(hdr.a_flags & A_SEP); /* separate I & D or not */
/* Get text and data sizes. */
*text_bytes = (vir_bytes) hdr.a_text; /* text size in bytes */
*data_bytes = (vir_bytes) hdr.a_data; /* data size in bytes */
*bss_bytes = (vir_bytes) hdr.a_bss; /* bss size in bytes */
*tot_bytes = hdr.a_total; /* total bytes to allocate for prog */
if (*tot_bytes == 0) return(ENOEXEC);
if (!*sep_id) {
/* If I & D space is not separated, it is all considered data. Text=0*/
*data_bytes += *text_bytes;
*text_bytes = 0;
}
*pc = hdr.a_entry; /* initial address to start execution */
*hdrlenp = hdr.a_hdrlen & BYTE; /* header length */
return(OK);
if (exec_hdr[0] == '#' && exec_hdr[1] == '!' && exec_len >= 2)
return(TRUE);
else
return(FALSE);
}
/*===========================================================================*
* patch_stack *
*===========================================================================*/
PRIVATE int patch_stack(vp, stack, stk_bytes)
struct vnode *vp; /* pointer for open script file */
char stack[ARG_MAX]; /* pointer to stack image within VFS */
vir_bytes *stk_bytes; /* size of initial stack */
static int patch_stack(
struct vnode *vp, /* pointer for open script file */
char stack[ARG_MAX], /* pointer to stack image within VFS */
vir_bytes *stk_bytes /* size of initial stack */
)
{
/* Patch the argument vector to include the path name of the script to be
* interpreted, and all strings on the #! line. Returns the path name of
@ -413,11 +443,12 @@ vir_bytes *stk_bytes; /* size of initial stack */
/*===========================================================================*
* insert_arg *
*===========================================================================*/
PRIVATE int insert_arg(stack, stk_bytes, arg, replace)
char stack[ARG_MAX]; /* pointer to stack image within PM */
vir_bytes *stk_bytes; /* size of initial stack */
char *arg; /* argument to prepend/replace as new argv[0] */
int replace;
static int insert_arg(
char stack[ARG_MAX], /* pointer to stack image within PM */
vir_bytes *stk_bytes, /* size of initial stack */
char *arg, /* argument to prepend/replace as new argv[0] */
int replace
)
{
/* Patch the stack so that arg will become argv[0]. Be careful, the stack may
* be filled with garbage, although it normally looks like this:
@ -470,9 +501,10 @@ int replace;
/*===========================================================================*
* patch_ptr *
*===========================================================================*/
PRIVATE void patch_ptr(stack, base)
char stack[ARG_MAX]; /* pointer to stack image within PM */
vir_bytes base; /* virtual address of stack base inside user */
static void patch_ptr(
char stack[ARG_MAX], /* pointer to stack image within PM */
vir_bytes base /* virtual address of stack base inside user */
)
{
/* When doing an exec(name, argv, envp) call, the user builds up a stack
* image with arg and env pointers relative to the start of the stack. Now
@ -499,16 +531,17 @@ vir_bytes base; /* virtual address of stack base inside user */
}
}
/*===========================================================================*
* read_seg *
*===========================================================================*/
PRIVATE int read_seg(vp, off, proc_e, seg, seg_bytes)
struct vnode *vp; /* inode descriptor to read from */
off_t off; /* offset in file */
int proc_e; /* process number (endpoint) */
int seg; /* T, D, or S */
phys_bytes seg_bytes; /* how much is to be transferred? */
static int read_seg(
struct vnode *vp, /* inode descriptor to read from */
off_t off, /* offset in file */
int proc_e, /* process number (endpoint) */
int seg, /* T, D, or S */
vir_bytes seg_addr, /* address to load segment */
phys_bytes seg_bytes /* how much is to be transferred? */
)
{
/*
* The byte count on read is usually smaller than the segment count, because
@ -521,10 +554,12 @@ phys_bytes seg_bytes; /* how much is to be transferred? */
unsigned int cum_io;
char buf[1024];
assert((seg == T)||(seg == D));
/* Make sure that the file is big enough */
if (vp->v_size < off+seg_bytes) return(EIO);
if (seg != D) {
if (seg == T) {
/* We have to use a copy loop until safecopies support segments */
o = 0;
while (o < seg_bytes) {
@ -532,7 +567,8 @@ phys_bytes seg_bytes; /* how much is to be transferred? */
if (n > sizeof(buf))
n = sizeof(buf);
if ((r = req_readwrite(vp->v_fs_e,vp->v_inode_nr,cvul64(off+o), READING, VFS_PROC_NR, buf,
if ((r = req_readwrite(vp->v_fs_e,vp->v_inode_nr,cvul64(off+o),
READING, VFS_PROC_NR, buf,
n, &new_pos, &cum_io)) != OK) {
printf("VFS: read_seg: req_readwrite failed (text)\n");
return(r);
@ -545,7 +581,7 @@ phys_bytes seg_bytes; /* how much is to be transferred? */
}
if ((r = sys_vircopy(VFS_PROC_NR, D, (vir_bytes)buf, proc_e,
seg, o, n)) != OK) {
seg, seg_addr + o, n)) != OK) {
printf("VFS: read_seg: copy failed (text)\n");
return(r);
}
@ -553,26 +589,29 @@ phys_bytes seg_bytes; /* how much is to be transferred? */
o += n;
}
return(OK);
}
} else if (seg == D) {
if ((r = req_readwrite(vp->v_fs_e, vp->v_inode_nr, cvul64(off), READING,
proc_e, 0, seg_bytes, &new_pos, &cum_io)) != OK) {
proc_e, (char*)seg_addr, seg_bytes,
&new_pos, &cum_io)) != OK) {
printf("VFS: read_seg: req_readwrite failed (data)\n");
return(r);
}
if (r == OK && cum_io != seg_bytes)
printf("VFSread_seg segment has not been read properly by exec()\n");
printf("VFS: read_seg segment has not been read properly by exec()\n");
return(r);
}
return(OK);
}
/*===========================================================================*
* clo_exec *
*===========================================================================*/
PRIVATE void clo_exec(rfp)
struct fproc *rfp;
static void clo_exec(struct fproc *rfp)
{
/* Files can be marked with the FD_CLOEXEC bit (in fp->fp_cloexec).
*/
@ -584,3 +623,27 @@ struct fproc *rfp;
(void) close_fd(rfp, i);
}
static int map_header(char **exec_hdr, const struct vnode *vp)
{
int r;
u64_t new_pos;
unsigned int cum_io;
off_t pos;
char *hdr;
pos = 0; /* Read from the start of the file */
/* Assume that header is not larger than a page */
hdr = (char*)malloc(PAGE_SIZE);
if (hdr == NULL) {
return ENOMEM;
}
r = req_readwrite(vp->v_fs_e, vp->v_inode_nr, cvul64(pos), READING,
VFS_PROC_NR, hdr, MIN(vp->v_size, PAGE_SIZE),
&new_pos, &cum_io);
if (r != OK) return(r);
*exec_hdr = hdr;
return(OK);
}

19
servers/vfs/exec.h Normal file
View file

@ -0,0 +1,19 @@
#ifndef _VFS_EXEC_H_
#define _VFS_EXEC_H_ 1
struct exec_info {
int proc_e; /* Process endpoint */
char *hdr; /* Exec file's header */
vir_bytes pc; /* Entry point of exec file */
vir_bytes stack_top; /* Top of the stack */
vir_bytes frame_len; /* Stack size */
uid_t new_uid; /* Process UID after exec */
gid_t new_gid; /* Process GID after exec */
int load_text; /* Load text section? */
int allow_setuid; /* Allow setuid execution? */
struct vnode *vp; /* Exec file's vnode */
struct stat sb; /* Exec file's stat structure */
char progname[PROC_NAME_LEN]; /* Program name */
};
#endif /* !_VFS_EXEC_H_ */

13
servers/vm/exec.c
View file

@ -32,7 +32,7 @@
#include "memory.h"
FORWARD _PROTOTYPE( int new_mem, (struct vmproc *vmp,
vir_bytes text_bytes, vir_bytes data_bytes, vir_bytes bss_bytes,
vir_bytes text_bytes, vir_bytes data_bytes,
vir_bytes stk_bytes, phys_bytes tot_bytes, vir_bytes *stack_top));
static int failcount;
@ -82,7 +82,7 @@ SANITYCHECK(SCL_DETAIL);
/* Check to see if segment sizes are feasible. */
tc = (vir_clicks) (CLICK_CEIL(args.text_bytes) >> CLICK_SHIFT);
dc = (vir_clicks) (CLICK_CEIL(args.data_bytes+args.bss_bytes) >> CLICK_SHIFT);
dc = (vir_clicks) (CLICK_CEIL(args.data_bytes) >> CLICK_SHIFT);
totc = (vir_clicks) (CLICK_CEIL(args.tot_bytes) >> CLICK_SHIFT);
sc = (vir_clicks) (CLICK_CEIL(args.args_bytes) >> CLICK_SHIFT);
if (dc >= totc) {
@ -102,7 +102,7 @@ SANITYCHECK(SCL_DETAIL);
* kernel.
*/
r = new_mem(vmp, args.text_bytes, args.data_bytes,
args.bss_bytes, args.args_bytes, args.tot_bytes, &stack_top);
args.args_bytes, args.tot_bytes, &stack_top);
if (r != OK) {
printf("VM: newmem: new_mem failed\n");
return(r);
@ -130,11 +130,10 @@ SANITYCHECK(SCL_DETAIL);
* new_mem *
*===========================================================================*/
PRIVATE int new_mem(rmp, text_bytes, data_bytes,
bss_bytes,stk_bytes,tot_bytes,stack_top)
stk_bytes,tot_bytes,stack_top)
struct vmproc *rmp; /* process to get a new memory map */
vir_bytes text_bytes; /* text segment size in bytes */
vir_bytes data_bytes; /* size of initialized data in bytes */
vir_bytes bss_bytes; /* size of bss in bytes */
vir_bytes data_bytes; /* size of data (incl bss) in bytes */
vir_bytes stk_bytes; /* size of initial stack segment in bytes */
phys_bytes tot_bytes; /* total memory to allocate, including gap */
vir_bytes *stack_top; /* top of process stack */
@ -158,7 +157,7 @@ vir_bytes *stack_top; /* top of process stack */
* boundary. The data and bss parts are run together with no space.
*/
text_clicks = (vir_clicks) (CLICK_CEIL(text_bytes) >> CLICK_SHIFT);
data_clicks = (vir_clicks) (CLICK_CEIL(data_bytes + bss_bytes) >> CLICK_SHIFT);
data_clicks = (vir_clicks) (CLICK_CEIL(data_bytes) >> CLICK_SHIFT);
stack_clicks = (vir_clicks) (CLICK_CEIL(stk_bytes) >> CLICK_SHIFT);
tot_clicks = (vir_clicks) (CLICK_CEIL(tot_bytes) >> CLICK_SHIFT);
gap_clicks = tot_clicks - data_clicks - stack_clicks;

3
share/mk/bsd.prog.mk
View file

@ -58,7 +58,8 @@ MKDEP_SUFFIXES?= .o .ln
# rumpfs_lfs rumpfs_msdosfs rumpfs_nfs rumpfs_ntfs rumpfs_syspuffs \
# rumpfs_tmpfs rumpfs_udf rumpfs_ufs
.for _lib in \
c curses driver netdriver edit end m sys timers util bz2 l hgfs audiodriver
c curses driver netdriver edit end m sys timers util bz2 l hgfs \
audiodriver elf
.ifndef LIB${_lib:tu}
LIB${_lib:tu}= ${DESTDIR}/usr/lib/lib${_lib}.a
.if ${COMPILER_TYPE} == "ack"