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mmap emulation

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@158 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
bellard 2003-05-13 00:25:15 +00:00
parent 74c95119f2
commit 54936004fd
9 changed files with 646 additions and 101 deletions
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26
linux-user/syscall.c
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@ -64,11 +64,6 @@
//#define DEBUG
#ifndef PAGE_SIZE
#define PAGE_SIZE 4096
#define PAGE_MASK ~(PAGE_SIZE - 1)
#endif
//#include <linux/msdos_fs.h>
#define VFAT_IOCTL_READDIR_BOTH _IOR('r', 1, struct dirent [2])
#define VFAT_IOCTL_READDIR_SHORT _IOR('r', 2, struct dirent [2])
@ -153,7 +148,7 @@ static long do_brk(char *new_brk)
if (new_brk < target_original_brk)
return -ENOMEM;
brk_page = (char *)(((unsigned long)target_brk + PAGE_SIZE - 1) & PAGE_MASK);
brk_page = (char *)HOST_PAGE_ALIGN((unsigned long)target_brk);
/* If the new brk is less than this, set it and we're done... */
if (new_brk < brk_page) {
@ -162,11 +157,10 @@ static long do_brk(char *new_brk)
}
/* We need to allocate more memory after the brk... */
new_alloc_size = ((new_brk - brk_page + 1)+(PAGE_SIZE-1)) & PAGE_MASK;
mapped_addr = get_errno((long)mmap((caddr_t)brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
new_alloc_size = HOST_PAGE_ALIGN(new_brk - brk_page + 1);
mapped_addr = get_errno(target_mmap((unsigned long)brk_page, new_alloc_size,
PROT_READ|PROT_WRITE,
MAP_ANON|MAP_FIXED|MAP_PRIVATE, 0, 0));
if (is_error(mapped_addr)) {
return mapped_addr;
} else {
@ -1709,7 +1703,7 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
v4 = tswap32(vptr[3]);
v5 = tswap32(vptr[4]);
v6 = tswap32(vptr[5]);
ret = get_errno((long)mmap((void *)v1, v2, v3, v4, v5, v6));
ret = get_errno(target_mmap(v1, v2, v3, v4, v5, v6));
}
break;
#endif
@ -1718,16 +1712,16 @@ long do_syscall(void *cpu_env, int num, long arg1, long arg2, long arg3,
#else
case TARGET_NR_mmap:
#endif
ret = get_errno((long)mmap((void *)arg1, arg2, arg3, arg4, arg5, arg6));
ret = get_errno(target_mmap(arg1, arg2, arg3, arg4, arg5, arg6));
break;
case TARGET_NR_munmap:
ret = get_errno(munmap((void *)arg1, arg2));
ret = get_errno(target_munmap(arg1, arg2));
break;
case TARGET_NR_mprotect:
ret = get_errno(mprotect((void *)arg1, arg2, arg3));
ret = get_errno(target_mprotect(arg1, arg2, arg3));
break;
case TARGET_NR_mremap:
ret = get_errno((long)mremap((void *)arg1, arg2, arg3, arg4));
ret = get_errno(target_mremap(arg1, arg2, arg3, arg4, arg5));
break;
case TARGET_NR_msync:
ret = get_errno(msync((void *)arg1, arg2, arg3));