3f38115c7b
. define _MINIX_SYSTEM for all system code from minix.service.mk . hide some system-level declarations and definitions behind _MINIX_SYSTEM to cleanly fix host tool build problems on Minix (such as: NONE being defined and paddr_t being used but not declared) . the similar definition _SYSTEM is unsuitable as it changes the values of errno definitions Change-Id: I407de79e2575115243a074b16e79546a279cfa3e
173 lines
3 KiB
C
173 lines
3 KiB
C
#define _SYSTEM 1
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#define _MINIX_SYSTEM 1
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#include <sys/cdefs.h>
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#include "namespace.h"
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#include <lib.h>
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#include <minix/u64.h>
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#include <minix/vm.h>
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/* INCLUDES HERE */
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#include <sys/mman.h>
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#include <stdarg.h>
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#include <string.h>
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#include <errno.h>
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#ifdef __weak_alias
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__weak_alias(mmap, _mmap)
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__weak_alias(munmap, _munmap)
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#endif
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void *minix_mmap_for(endpoint_t forwhom,
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void *addr, size_t len, int prot, int flags, int fd, off_t offset)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.VMM_ADDR = addr;
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m.VMM_LEN = len;
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m.VMM_PROT = prot;
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m.VMM_FLAGS = flags;
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m.VMM_FD = fd;
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m.VMM_OFFSET = offset;
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m.VMM_FORWHOM = forwhom;
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if(forwhom != SELF) {
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m.VMM_FLAGS |= MAP_THIRDPARTY;
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}
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r = _syscall(VM_PROC_NR, VM_MMAP, &m);
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if(r != OK) {
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return MAP_FAILED;
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}
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return m.VMM_RETADDR;
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}
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int minix_vfs_mmap(endpoint_t who, off_t offset, size_t len,
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dev_t dev, ino_t ino, int fd, u32_t vaddr, u16_t clearend,
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u16_t flags)
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{
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message m;
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memset(&m, 0, sizeof(message));
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m.m_vm_vfs_mmap.who = who;
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m.m_vm_vfs_mmap.offset = offset;
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m.m_vm_vfs_mmap.dev = dev;
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m.m_vm_vfs_mmap.ino = ino;
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m.m_vm_vfs_mmap.vaddr = vaddr;
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m.m_vm_vfs_mmap.len = len;
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m.m_vm_vfs_mmap.fd = fd;
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m.m_vm_vfs_mmap.clearend = clearend;
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m.m_vm_vfs_mmap.flags = flags;
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return _syscall(VM_PROC_NR, VM_VFS_MMAP, &m);
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}
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void *mmap(void *addr, size_t len, int prot, int flags,
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int fd, off_t offset)
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{
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return minix_mmap_for(SELF, addr, len, prot, flags, fd, offset);
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}
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int munmap(void *addr, size_t len)
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{
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message m;
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memset(&m, 0, sizeof(m));
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m.VMUM_ADDR = addr;
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m.VMUM_LEN = len;
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return _syscall(VM_PROC_NR, VM_MUNMAP, &m);
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}
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void *vm_remap(endpoint_t d,
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endpoint_t s,
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void *da,
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void *sa,
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size_t size)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.VMRE_D = d;
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m.VMRE_S = s;
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m.VMRE_DA = (char *) da;
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m.VMRE_SA = (char *) sa;
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m.VMRE_SIZE = size;
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r = _syscall(VM_PROC_NR, VM_REMAP, &m);
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if (r != OK)
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return MAP_FAILED;
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return (void *) m.VMRE_RETA;
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}
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void *vm_remap_ro(endpoint_t d,
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endpoint_t s,
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void *da,
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void *sa,
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size_t size)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.VMRE_D = d;
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m.VMRE_S = s;
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m.VMRE_DA = (char *) da;
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m.VMRE_SA = (char *) sa;
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m.VMRE_SIZE = size;
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r = _syscall(VM_PROC_NR, VM_REMAP_RO, &m);
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if (r != OK)
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return MAP_FAILED;
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return (void *) m.VMRE_RETA;
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}
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int vm_unmap(endpoint_t endpt, void *addr)
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{
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message m;
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memset(&m, 0, sizeof(m));
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m.VMUN_ENDPT = endpt;
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m.VMUN_ADDR = addr;
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return _syscall(VM_PROC_NR, VM_SHM_UNMAP, &m);
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}
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unsigned long vm_getphys(endpoint_t endpt, void *addr)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.VMPHYS_ENDPT = endpt;
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m.VMPHYS_ADDR = (long) addr;
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r = _syscall(VM_PROC_NR, VM_GETPHYS, &m);
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if (r != OK)
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return 0;
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return m.VMPHYS_RETA;
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}
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u8_t vm_getrefcount(endpoint_t endpt, void *addr)
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{
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message m;
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int r;
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memset(&m, 0, sizeof(m));
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m.VMREFCNT_ENDPT = endpt;
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m.VMREFCNT_ADDR = (long) addr;
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r = _syscall(VM_PROC_NR, VM_GETREF, &m);
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if (r != OK)
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return (u8_t) -1;
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return (u8_t) m.VMREFCNT_RETC;
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}
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