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<machine/signal.h>

Browse source 
. use netbsd sigframe, sigcontext struct
	. netbsd sigframe *contains* sigcontext; use that directly
	  in kernel sigsend
	. drop two fields from minix x86 stackframe.h (process context)
	  that were unused, retadr and st

use in-sigframe sigcontext

Change-Id: Ib59d699596dc3a78163dee59f19730482fdddf11
This commit is contained in:
Ben Gras 2013-12-11 00:47:22 +01:00 committed by Lionel Sambuc
parent 66a4f9a240
commit 7597f4a8fc
22 changed files with 411 additions and 145 deletions
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4
include/arch/i386/include/stackframe.h
View file

@ -22,12 +22,12 @@ struct stackframe_s {
reg_t di; /* di through cx are not accessed in C */
reg_t si; /* order is to match pusha/popa */
reg_t fp; /* bp */
reg_t st; /* hole for another copy of sp */
/* reg_t st; */ /* hole for another copy of sp */
reg_t bx; /* | */
reg_t dx; /* | */
reg_t cx; /* | */
reg_t retreg; /* ax and above are all pushed by save */
reg_t retadr; /* return address for assembly code save() */
/* reg_t retadr; */ /* return address for assembly code save() */
reg_t pc; /* ^ last item pushed by interrupt */
reg_t cs; /* | */
reg_t psw; /* | */

7
kernel/arch/earm/arch_system.c
View file

@ -9,6 +9,7 @@
#include <assert.h>
#include <signal.h>
#include <machine/vm.h>
#include <machine/signal.h>
#include <arm/armreg.h>
#include <minix/u64.h>
@ -55,7 +56,9 @@ void arch_proc_setcontext(struct proc *p, struct stackframe_s *state,
int isuser, int trapstyle)
{
assert(sizeof(p->p_reg) == sizeof(*state));
memcpy(&p->p_reg, state, sizeof(*state));
if(state != &p->p_reg) {
memcpy(&p->p_reg, state, sizeof(*state));
}
/* further code is instructed to not touch the context
* any more
@ -167,7 +170,7 @@ struct proc * arch_finish_switch_to_user(void)
return p;
}
void fpu_sigcontext(struct proc *pr, struct sigframe *fr, struct sigcontext *sc)
void fpu_sigcontext(struct proc *pr, struct sigframe_sigcontext *fr, struct sigcontext *sc)
{
}

6
kernel/arch/i386/arch_system.c
View file

@ -538,7 +538,9 @@ void arch_proc_setcontext(struct proc *p, struct stackframe_s *state,
/* someone wants to totally re-initialize process state */
assert(sizeof(p->p_reg) == sizeof(*state));
memcpy(&p->p_reg, state, sizeof(*state));
if(state != &p->p_reg) {
memcpy(&p->p_reg, state, sizeof(*state));
}
/* further code is instructed to not touch the context
* any more
@ -614,7 +616,7 @@ void restore_user_context(struct proc *p)
NOT_REACHABLE;
}
void fpu_sigcontext(struct proc *pr, struct sigframe *fr, struct sigcontext *sc)
void fpu_sigcontext(struct proc *pr, struct sigframe_sigcontext *fr, struct sigcontext *sc)
{
int fp_error;

2
kernel/arch/i386/procoffsets.cf
View file

@ -5,12 +5,10 @@ struct proc
member DIREG p_reg.di
member SIREG p_reg.si
member BPREG p_reg.fp
member STREG p_reg.st
member BXREG p_reg.bx
member DXREG p_reg.dx
member CXREG p_reg.cx
member AXREG p_reg.retreg
member RETADR p_reg.retadr
member PCREG p_reg.pc
member CSREG p_reg.cs
member PSWREG p_reg.psw

3
kernel/arch/i386/sconst.h
View file

@ -35,8 +35,7 @@
movl (8 + displ)(%esp), tmp ;\
movl tmp, PSWREG(pptr) ;\
movl (12 + displ)(%esp), tmp ;\
movl tmp, SPREG(pptr) ;\
movl tmp, STREG(pptr)
movl tmp, SPREG(pptr)
/*
* restore kernel segments. %cs is already set and %fs, %gs are not used */

4
kernel/proto.h
View file

@ -8,6 +8,8 @@
#include <minix/safecopies.h>
#include <machine/archtypes.h>
#include <machine/signal.h>
#include <machine/frame.h>
/* Struct declarations. */
struct proc;
@ -35,7 +37,7 @@ void context_stop_idle(void);
int restore_fpu(struct proc *);
void save_fpu(struct proc *);
void save_local_fpu(struct proc *, int retain);
void fpu_sigcontext(struct proc *, struct sigframe *fr, struct
void fpu_sigcontext(struct proc *, struct sigframe_sigcontext *fr, struct
sigcontext *sc);
/* main.c */

47
kernel/system/do_sigreturn.c
View file

@ -37,22 +37,51 @@ int do_sigreturn(struct proc * caller, message * m_ptr)
#if defined(__i386__)
/* Restore user bits of psw from sc, maintain system bits from proc. */
sc.sc_psw = (sc.sc_psw & X86_FLAGS_USER) |
sc.sc_eflags = (sc.sc_eflags & X86_FLAGS_USER) |
(rp->p_reg.psw & ~X86_FLAGS_USER);
#endif
#if defined(__i386__)
/* Don't panic kernel if user gave bad selectors. */
sc.sc_cs = rp->p_reg.cs;
sc.sc_ds = rp->p_reg.ds;
sc.sc_es = rp->p_reg.es;
sc.sc_ss = rp->p_reg.ss;
sc.sc_fs = rp->p_reg.fs;
sc.sc_gs = rp->p_reg.gs;
/* Write back registers we allow to be restored, i.e.
* not the segment ones.
*/
rp->p_reg.di = sc.sc_edi;
rp->p_reg.si = sc.sc_esi;
rp->p_reg.fp = sc.sc_ebp;
rp->p_reg.bx = sc.sc_ebx;
rp->p_reg.dx = sc.sc_edx;
rp->p_reg.cx = sc.sc_ecx;
rp->p_reg.retreg = sc.sc_eax;
rp->p_reg.pc = sc.sc_eip;
rp->p_reg.psw = sc.sc_eflags;
rp->p_reg.sp = sc.sc_esp;
#endif
#if defined(__arm__)
rp->p_reg.psr = sc.sc_spsr;
rp->p_reg.retreg = sc.sc_r0;
rp->p_reg.r1 = sc.sc_r1;
rp->p_reg.r2 = sc.sc_r2;
rp->p_reg.r3 = sc.sc_r3;
rp->p_reg.r4 = sc.sc_r4;
rp->p_reg.r5 = sc.sc_r5;
rp->p_reg.r6 = sc.sc_r6;
rp->p_reg.r7 = sc.sc_r7;
rp->p_reg.r8 = sc.sc_r8;
rp->p_reg.r9 = sc.sc_r9;
rp->p_reg.r10 = sc.sc_r10;
rp->p_reg.fp = sc.sc_r11;
rp->p_reg.r12 = sc.sc_r12;
rp->p_reg.sp = sc.sc_usr_sp;
rp->p_reg.lr = sc.sc_usr_lr;
rp->p_reg.pc = sc.sc_pc;
#endif
/* Restore the registers. */
arch_proc_setcontext(rp, &sc.sc_regs, 1, sc.trap_style);
arch_proc_setcontext(rp, &rp->p_reg, 1, sc.trap_style);
if(sc.sc_magic != SC_MAGIC) { printf("kernel sigreturn: corrupt signal context\n"); }
#if defined(__i386__)
if (sc.sc_flags & MF_FPU_INITIALIZED)
{

90
kernel/system/do_sigsend.c
View file

@ -22,8 +22,7 @@ int do_sigsend(struct proc * caller, message * m_ptr)
struct sigmsg smsg;
register struct proc *rp;
struct sigcontext sc, *scp;
struct sigframe fr, *frp;
struct sigframe_sigcontext fr, *frp;
int proc_nr, r;
if (!isokendpt(m_ptr->m_sigcalls.endpt, &proc_nr)) return EINVAL;
@ -36,17 +35,41 @@ int do_sigsend(struct proc * caller, message * m_ptr)
(vir_bytes)&smsg, (phys_bytes) sizeof(struct sigmsg))) != OK)
return r;
/* Compute the user stack pointer where sigcontext will be stored. */
/* Compute the user stack pointer where sigframe will start. */
smsg.sm_stkptr = arch_get_sp(rp);
scp = (struct sigcontext *) smsg.sm_stkptr - 1;
frp = (struct sigframe_sigcontext *) smsg.sm_stkptr - 1;
/* Copy the registers to the sigcontext structure. */
memcpy(&sc.sc_regs, (char *) &rp->p_reg, sizeof(sigregs));
memset(&fr, 0, sizeof(fr));
fr.sf_scp = &frp->sf_sc;
#if defined(__i386__)
sc.trap_style = rp->p_seg.p_kern_trap_style;
fr.sf_sc.sc_gs = rp->p_reg.gs;
fr.sf_sc.sc_fs = rp->p_reg.fs;
fr.sf_sc.sc_es = rp->p_reg.es;
fr.sf_sc.sc_ds = rp->p_reg.ds;
fr.sf_sc.sc_edi = rp->p_reg.di;
fr.sf_sc.sc_esi = rp->p_reg.si;
fr.sf_sc.sc_ebp = rp->p_reg.fp;
fr.sf_sc.sc_ebx = rp->p_reg.bx;
fr.sf_sc.sc_edx = rp->p_reg.dx;
fr.sf_sc.sc_ecx = rp->p_reg.cx;
fr.sf_sc.sc_eax = rp->p_reg.retreg;
fr.sf_sc.sc_eip = rp->p_reg.pc;
fr.sf_sc.sc_cs = rp->p_reg.cs;
fr.sf_sc.sc_eflags = rp->p_reg.psw;
fr.sf_sc.sc_esp = rp->p_reg.sp;
fr.sf_sc.sc_ss = rp->p_reg.ss;
fr.sf_fp = rp->p_reg.fp;
fr.sf_signum = smsg.sm_signo;
rp->p_reg.fp = (reg_t) &frp->sf_fp;
fr.sf_scpcopy = fr.sf_scp;
fr.sf_ra_sigreturn = smsg.sm_sigreturn;
fr.sf_ra= rp->p_reg.pc;
if (sc.trap_style == KTS_NONE) {
fr.sf_sc.trap_style = rp->p_seg.p_kern_trap_style;
if (fr.sf_sc.trap_style == KTS_NONE) {
printf("do_sigsend: sigsend an unsaved process\n");
return EINVAL;
}
@ -54,43 +77,50 @@ int do_sigsend(struct proc * caller, message * m_ptr)
if (proc_used_fpu(rp)) {
/* save the FPU context before saving it to the sig context */
save_fpu(rp);
memcpy(&sc.sc_fpu_state, rp->p_seg.fpu_state, FPU_XFP_SIZE);
memcpy(&fr.sf_sc.sc_fpu_state, rp->p_seg.fpu_state, FPU_XFP_SIZE);
}
#endif
/* Finish the sigcontext initialization. */
sc.sc_mask = smsg.sm_mask;
sc.sc_flags = rp->p_misc_flags & MF_FPU_INITIALIZED;
#if defined(__arm__)
fr.sf_sc.sc_spsr = rp->p_reg.psr;
fr.sf_sc.sc_r0 = rp->p_reg.retreg;
fr.sf_sc.sc_r1 = rp->p_reg.r1;
fr.sf_sc.sc_r2 = rp->p_reg.r2;
fr.sf_sc.sc_r3 = rp->p_reg.r3;
fr.sf_sc.sc_r4 = rp->p_reg.r4;
fr.sf_sc.sc_r5 = rp->p_reg.r5;
fr.sf_sc.sc_r6 = rp->p_reg.r6;
fr.sf_sc.sc_r7 = rp->p_reg.r7;
fr.sf_sc.sc_r8 = rp->p_reg.r8;
fr.sf_sc.sc_r9 = rp->p_reg.r9;
fr.sf_sc.sc_r10 = rp->p_reg.r10;
fr.sf_sc.sc_r11 = rp->p_reg.fp;
fr.sf_sc.sc_r12 = rp->p_reg.r12;
fr.sf_sc.sc_usr_sp = rp->p_reg.sp;
fr.sf_sc.sc_usr_lr = rp->p_reg.lr;
fr.sf_sc.sc_svc_lr = 0; /* ? */
fr.sf_sc.sc_pc = rp->p_reg.pc; /* R15 */
#endif
/* Copy the sigcontext structure to the user's stack. */
if ((r = data_copy_vmcheck(caller, KERNEL, (vir_bytes)&sc,
m_ptr->m_sigcalls.endpt, (vir_bytes)scp,
(vir_bytes)sizeof(struct sigcontext))) != OK)
return r;
/* Finish the sigcontext initialization. */
fr.sf_sc.sc_mask = smsg.sm_mask;
fr.sf_sc.sc_flags = rp->p_misc_flags & MF_FPU_INITIALIZED;
fr.sf_sc.sc_magic = SC_MAGIC;
/* Initialize the sigframe structure. */
frp = (struct sigframe *) scp - 1;
fr.sf_scpcopy = scp;
fr.sf_retadr2= (void (*)()) rp->p_reg.pc;
fr.sf_fp = rp->p_reg.fp;
rp->p_reg.fp = (reg_t) &frp->sf_fp;
fr.sf_scp = scp;
fpu_sigcontext(rp, &fr, &sc);
fr.sf_signo = smsg.sm_signo;
fr.sf_retadr = (void (*)()) smsg.sm_sigreturn;
fpu_sigcontext(rp, &fr, &fr.sf_sc);
#if defined(__arm__)
/* use the ARM link register to set the return address from the signal
* handler
*/
rp->p_reg.lr = (reg_t) fr.sf_retadr;
rp->p_reg.lr = (reg_t) smsg.sm_sigreturn;
if(rp->p_reg.lr & 1) { printf("sigsend: LSB LR makes no sense.\n"); }
/* pass signal handler parameters in registers */
rp->p_reg.retreg = (reg_t) fr.sf_signo;
rp->p_reg.r1 = (reg_t) fr.sf_code;
rp->p_reg.retreg = (reg_t) smsg.sm_signo;
rp->p_reg.r1 = 0; /* sf_code */
rp->p_reg.r2 = (reg_t) fr.sf_scp;
rp->p_misc_flags |= MF_CONTEXT_SET;
#endif
@ -98,7 +128,7 @@ int do_sigsend(struct proc * caller, message * m_ptr)
/* Copy the sigframe structure to the user's stack. */
if ((r = data_copy_vmcheck(caller, KERNEL, (vir_bytes)&fr,
m_ptr->m_sigcalls.endpt, (vir_bytes)frp,
(vir_bytes)sizeof(struct sigframe))) != OK)
(vir_bytes)sizeof(struct sigframe_sigcontext))) != OK)
return r;
/* Reset user registers to execute the signal handler. */

3
lib/libc/arch/arm/sys-minix/__sigreturn.S
View file

@ -5,6 +5,5 @@
IMPORT(_sigreturn)
ENTRY(__sigreturn)
add sp, sp, #24 /* make sp point to sigframe.sf_scpcopy */
pop {r0} /* load it into r0 as parameter */
pop {r0} /* load sigframe.sf_scp into r0 as parameter */
b _C_LABEL(_sigreturn) /* _sigreturn(struct sigcontext *sf_scpcopy) */

3
lib/libc/sys-minix/sigprocmask.c
View file

@ -1,6 +1,7 @@
#include <sys/cdefs.h>
#include <sys/signal.h>
#include <sys/types.h>
#include <sys/sigtypes.h>
#include <sys/signal.h>
#include <lib.h>
#include <string.h>
#include "namespace.h"

1
lib/libc/sys-minix/sigreturn.c
View file

@ -4,6 +4,7 @@
#include <lib.h>
#include <string.h>
#include <assert.h>
#include <signal.h>
#include <string.h>
#include <sys/signal.h>

1
lib/libc/sys-minix/statvfs.c
View file

@ -2,6 +2,7 @@
#include <lib.h>
#include "namespace.h"
#include <sys/types.h>
#include <sys/statvfs.h>
#include <string.h>

1
lib/libvassert/vassert.c
View file

@ -7,6 +7,7 @@
#include <minix/ipc.h>
#include <minix/com.h>
#include <minix/syslib.h>
#include <machine/stackframe.h>
#include "vassert.h"
VAssert_StateWrapper vassert_state ALIGNED(VASSERT_PAGE_SIZE);

6
sys/arch/arm/include/frame.h
View file

@ -88,12 +88,16 @@ typedef struct trapframe {
/*
* Signal frame. Pushed onto user stack before calling sigcode.
*/
#ifdef COMPAT_16
#if defined(COMPAT_16) || defined(__minix)
struct sigframe_sigcontext {
#ifdef __minix
struct sigcontext *sf_scp; /* Let sigreturn find sigcontext */
#endif
struct sigcontext sf_sc;
};
#endif
/* the pointers are use in the trampoline code to locate the ucontext */
struct sigframe_siginfo {
siginfo_t sf_si; /* actual saved siginfo */

193
sys/arch/arm/include/signal.h
View file

@ -1,59 +1,172 @@
#ifndef _ARM_SIGNAL_H_
#define _ARM_SIGNAL_H_
/* $NetBSD: signal.h,v 1.12 2011/06/30 20:09:20 wiz Exp $ */
/*
* Copyright (c) 1994-1996 Mark Brinicombe.
* Copyright (c) 1994 Brini.
* All rights reserved.
*
* This code is derived from software written for Brini by Mark Brinicombe
*
* 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.
* 3. All advertising materials mentioning features or use of this software
* must display the following acknowledgement:
* This product includes software developed by Brini.
* 4. The name of the company nor the name of the author may be used to
* endorse or promote products derived from this software without specific
* prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY BRINI ``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 BRINI 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.
*
* RiscBSD kernel project
*
* signal.h
*
* Architecture dependent signal types and structures
*
* Created : 30/09/94
*/
#ifndef _ARM32_SIGNAL_H_
#define _ARM32_SIGNAL_H_
#include <sys/featuretest.h>
#ifndef _LOCORE
typedef int sig_atomic_t;
#endif
/* The following structure should match the stackframe_s structure used
* by the kernel's context switching code. Floating point registers should
* be added in a different struct.
#if defined(_NETBSD_SOURCE)
#ifndef _LOCORE
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
*/
#include <machine/stackframe.h>
#if defined(__LIBC12_SOURCE__) || defined(_KERNEL)
struct sigcontext13 {
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore (old style) */
typedef struct stackframe_s sigregs;
struct sigframe { /* stack frame created for signalled process */
void (*sf_retadr)(void);
int sf_signo;
int sf_code;
struct sigcontext *sf_scp;
int sf_fp;
void (*sf_retadr2)(void);
struct sigcontext *sf_scpcopy;
unsigned int sc_spsr;
unsigned int sc_r0;
unsigned int sc_r1;
unsigned int sc_r2;
unsigned int sc_r3;
unsigned int sc_r4;
unsigned int sc_r5;
unsigned int sc_r6;
unsigned int sc_r7;
unsigned int sc_r8;
unsigned int sc_r9;
unsigned int sc_r10;
unsigned int sc_r11;
unsigned int sc_r12;
unsigned int sc_usr_sp;
unsigned int sc_usr_lr;
unsigned int sc_svc_lr;
unsigned int sc_pc;
};
#endif /* __LIBC12_SOURCE__ || _KERNEL */
struct sigcontext {
int trap_style; /* how should context be restored? KTS_* */
int sc_flags; /* sigstack state to restore (including
* MF_FPU_INITIALIZED)
*/
sigset_t sc_mask; /* signal mask to restore */
sigregs sc_regs; /* register set to restore */
int sc_onstack; /* sigstack state to restore */
int __sc_mask13; /* signal mask to restore (old style) */
unsigned int sc_spsr;
unsigned int sc_r0;
unsigned int sc_r1;
unsigned int sc_r2;
unsigned int sc_r3;
unsigned int sc_r4;
unsigned int sc_r5;
unsigned int sc_r6;
unsigned int sc_r7;
unsigned int sc_r8;
unsigned int sc_r9;
unsigned int sc_r10;
unsigned int sc_r11;
unsigned int sc_r12;
unsigned int sc_usr_sp;
unsigned int sc_usr_lr;
unsigned int sc_svc_lr;
unsigned int sc_pc;
sigset_t sc_mask; /* signal mask to restore (new style) */
#ifdef __minix
#define SC_MAGIC 0xc0ffee2
int sc_magic;
int sc_flags;
int trap_style;
#endif
};
#define sc_retreg sc_regs.retreg
#define sc_r1 sc_regs.r1
#define sc_r2 sc_regs.r2
#define sc_r3 sc_regs.r3
#define sc_r4 sc_regs.r4
#define sc_r5 sc_regs.r5
#define sc_r6 sc_regs.r6
#define sc_r7 sc_regs.r7
#define sc_r8 sc_regs.r8
#define sc_r9 sc_regs.r9
#define sc_r10 sc_regs.r10
#define sc_fp sc_regs.fp
#define sc_r12 sc_regs.r12
#define sc_sp sc_regs.sp
#define sc_lr sc_regs.lr
#define sc_pc sc_regs.pc
#define sc_psr sc_regs.psr
#endif /* !_LOCORE */
#if defined(__minix) && defined(_NETBSD_SOURCE)
/* Signals codes */
/*
* SIGFPE codes
*
* see ieeefp.h for definition of FP exception codes
*/
#define SIG_CODE_FPE_CODE_MASK 0x00000f00 /* Mask for exception code */
#define SIG_CODE_FPE_CODE_SHIFT 8 /* Shift for exception code */
#define SIG_CODE_FPE_TYPE_MASK 0x000000ff /* Mask for specific code */
/*
* SIGILL codes
*
* the signal code is the instruction that raised the signal
*/
/*
* SIGBUS and SIGSEGV codes
*
* The signal code is combination of the fault address and the fault code.
*
* The fault code is the coproc #15 fault status code
*
* The exception to this is a SIGBUS or SIGSEGV from a prefetch abort.
* In this case the fault status code is not valid so the TYPE_MASK
* should be treated as undefined (in practice it is the bottom 4 bits
* of the fault address).
*/
#define SIG_CODE_BUS_ADDR_MASK 0xfffffff0
#define SIG_CODE_BUS_TYPE_MASK 0x0000000f
#define SIG_CODE_SEGV_ADDR_MASK SIG_CODE_BUS_ADDR_MASK
#define SIG_CODE_SEGV_TYPE_MASK SIG_CODE_BUS_TYPE_MASK
#endif /* _NETBSD_SOURCE */
#if defined(__minix)
__BEGIN_DECLS
int sigreturn(struct sigcontext *_scp);
__END_DECLS
#endif /* defined(__minix) && defined(_NETBSD_SOURCE) */
#endif /* defined(__minix) */
#endif /* !_ARM_SIGNAL_H_ */
/* End of signal.h */

2
sys/arch/evbarm/include/Makefile
View file

@ -7,7 +7,7 @@ INCS= ansi.h asm.h \
cdefs.h cpu.h \
disklabel.h \
elf_machdep.h endian.h endian_machdep.h \
float.h \
float.h frame.h \
ieee.h ieeefp.h \
int_const.h int_fmtio.h int_limits.h int_mwgwtypes.h int_types.h \
\

3
sys/arch/evbarm/include/frame.h Normal file
View file

@ -0,0 +1,3 @@
/* $NetBSD: frame.h,v 1.2 2001/11/25 15:56:04 thorpej Exp $ */
#include <arm/arm32/frame.h>

2
sys/arch/i386/include/Makefile
View file

@ -17,7 +17,7 @@ INCS= ansi.h asm.h \
limits.h \
math.h mcontext.h mutex.h multiboot.h \
npx.h \
param.h pio.h profile.h ptrace.h \
param.h pio.h profile.h ptrace.h trap.h \
\
rwlock.h \
setjmp.h signal.h \

13
sys/arch/i386/include/frame.h
View file

@ -144,15 +144,26 @@ struct switchframe {
int sf_eip;
};
#ifdef _KERNEL
#if defined(_KERNEL) || defined(__minix)
/*
* Old-style signal frame
*/
struct sigframe_sigcontext {
#ifdef __minix
/* ret addr + stackframe for handler */
int sf_ra_sigreturn; /* first return to sigreturn */
#else
int sf_ra; /* return address for handler */
#endif
int sf_signum; /* "signum" argument for handler */
int sf_code; /* "code" argument for handler */
struct sigcontext *sf_scp; /* "scp" argument for handler */
#ifdef __minix
/* ret addr + stackframe for sigreturn */
uint32_t sf_fp; /* saved FP */
int sf_ra; /* actual return address for handler */
struct sigcontext *sf_scpcopy; /* minix scp copy */
#endif
struct sigcontext sf_sc; /* actual saved context */
};
#endif

153
sys/arch/i386/include/signal.h
View file

@ -1,63 +1,128 @@
/* $NetBSD: signal.h,v 1.29 2008/11/19 18:35:59 ad Exp $ */
/*
* Copyright (c) 1982, 1986, 1989, 1991 Regents of the University of California.
* 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.
* 3. Neither the name of the University nor the names of its contributors
* may be used to endorse or promote products derived from this software
* without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE REGENTS 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 REGENTS 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.
*
* @(#)signal.h 7.16 (Berkeley) 3/17/91
*/
#ifndef _I386_SIGNAL_H_
#define _I386_SIGNAL_H_
#include <sys/featuretest.h>
#ifdef __minix
#include <machine/fpu.h>
#endif
typedef int sig_atomic_t;
/* The following structure should match the stackframe_s structure used
* by the kernel's context switching code. Floating point registers should
* be added in a different struct.
#if defined(_NETBSD_SOURCE)
/*
* Get the "code" values
*/
#include <machine/trap.h>
#include <machine/stackframe.h>
#include <machine/fpu.h>
#if defined(_KERNEL) || defined(__minix)
/*
* Information pushed on stack when a signal is delivered.
* This is used by the kernel to restore state following
* execution of the signal handler. It is also made available
* to the handler to allow it to restore state properly if
* a non-standard exit is performed.
*/
struct sigcontext13 {
int sc_gs;
int sc_fs;
int sc_es;
int sc_ds;
int sc_edi;
int sc_esi;
int sc_ebp;
int sc_ebx;
int sc_edx;
int sc_ecx;
int sc_eax;
/* XXX */
int sc_eip;
int sc_cs;
int sc_eflags;
int sc_esp;
int sc_ss;
typedef struct stackframe_s sigregs;
struct sigframe { /* stack frame created for signalled process */
void (*sf_retadr)(void);
int sf_signo;
int sf_code;
struct sigcontext *sf_scp;
int sf_fp;
void (*sf_retadr2)(void);
struct sigcontext *sf_scpcopy;
int sc_onstack; /* sigstack state to restore */
int sc_mask; /* signal mask to restore (old style) */
int sc_trapno; /* XXX should be above */
int sc_err;
};
struct sigcontext {
int trap_style; /* how should context be restored? KTS_* */
int sc_flags; /* sigstack state to restore (including
* MF_FPU_INITIALIZED)
*/
sigset_t sc_mask; /* signal mask to restore */
sigregs sc_regs; /* register set to restore */
union fpu_state_u sc_fpu_state;
int sc_gs;
int sc_fs;
int sc_es;
int sc_ds;
int sc_edi;
int sc_esi;
int sc_ebp;
int sc_ebx;
int sc_edx;
int sc_ecx;
int sc_eax;
/* XXX */
int sc_eip;
int sc_cs;
int sc_eflags;
int sc_esp;
int sc_ss;
int sc_onstack; /* sigstack state to restore */
int __sc_mask13; /* signal mask to restore (old style) */
int sc_trapno; /* XXX should be above */
int sc_err;
sigset_t sc_mask; /* signal mask to restore (new style) */
#ifdef __minix
union fpu_state_u sc_fpu_state;
int trap_style; /* KTS_* method of entering kernel */
int sc_flags; /* MF_FPU_INITIALIZED if fpu state valid */
#define SC_MAGIC 0xc0ffee1
int sc_magic;
#endif
};
#endif /* _KERNEL */
#define sc_gs sc_regs.gs
#define sc_fs sc_regs.fs
#define sc_es sc_regs.es
#define sc_ds sc_regs.ds
#define sc_di sc_regs.di
#define sc_si sc_regs.si
#define sc_fp sc_regs.bp
#define sc_st sc_regs.st /* stack top -- used in kernel */
#define sc_bx sc_regs.bx
#define sc_dx sc_regs.dx
#define sc_cx sc_regs.cx
#define sc_retreg sc_regs.retreg
#define sc_retadr sc_regs.retadr /* return address to caller of
save -- used in kernel */
#define sc_pc sc_regs.pc
#define sc_cs sc_regs.cs
#define sc_psw sc_regs.psw
#define sc_sp sc_regs.sp
#define sc_ss sc_regs.ss
#if defined(__minix) && defined(_NETBSD_SOURCE)
#if defined(__minix)
__BEGIN_DECLS
int sigreturn(struct sigcontext *_scp);
int sigreturn(struct sigcontext *_scp);
__END_DECLS
#endif /* defined(__minix) && defined(_NETBSD_SOURCE) */
#endif /* defined(__minix) */
#endif /* _NETBSD_SOURCE */
#endif /* !_I386_SIGNAL_H_ */

3
sys/arch/i386/include/trap.h Normal file
View file

@ -0,0 +1,3 @@
/* $NetBSD: trap.h,v 1.7 2003/02/26 21:29:03 fvdl Exp $ */
#include <x86/trap.h>

9
test/test47.c
View file

@ -5,6 +5,7 @@
#include <stdlib.h>
#include <stdio.h>
#include <string.h>
#include <machine/frame.h>
int max_error = 4;
#include "common.h"
@ -17,12 +18,12 @@ int max_error = 4;
static void signal_handler(int signum)
{
struct sigframe *sigframe;
struct sigframe_sigcontext *sigframe;
/* report signal */
sigframe = (struct sigframe *) ((char *) &signum -
(char *) &((struct sigframe *) NULL)->sf_signo);
printf("Signal %d at 0x%x\n", signum, sigframe->sf_scp->sc_regs.pc);
sigframe = (struct sigframe_sigcontext *) ((char *) &signum -
(char *) &((struct sigframe_sigcontext *) NULL)->sf_signum);
printf("Signal %d at 0x%x\n", signum, sigframe->sf_scp->sc_eip);
/* count as error */
e(0);