diff options
Diffstat (limited to 'linux-user/mmap.c')
| -rw-r--r-- | linux-user/mmap.c | 44 |
1 files changed, 23 insertions, 21 deletions
diff --git a/linux-user/mmap.c b/linux-user/mmap.c index 4d18d22817..f87303402d 100644 --- a/linux-user/mmap.c +++ b/linux-user/mmap.c @@ -37,7 +37,7 @@ int target_mprotect(abi_ulong start, abi_ulong len, int prot) #ifdef DEBUG_MMAP printf("mprotect: start=0x" TARGET_FMT_lx - "len=0x" TARGET_FMT_lx " prot=%c%c%c\n", start, len, + "len=0x" TARGET_FMT_lx " prot=%c%c%c\n", start, len, prot & PROT_READ ? 'r' : '-', prot & PROT_WRITE ? 'w' : '-', prot & PROT_EXEC ? 'x' : '-'); @@ -100,7 +100,7 @@ static int mmap_frag(abi_ulong real_start, abi_ulong start, abi_ulong end, int prot, int flags, int fd, abi_ulong offset) { - abi_ulong real_end, ret, addr; + abi_ulong real_end, addr; void *host_start; int prot1, prot_new; @@ -116,10 +116,10 @@ static int mmap_frag(abi_ulong real_start, if (prot1 == 0) { /* no page was there, so we allocate one */ - ret = (long)mmap(host_start, qemu_host_page_size, prot, - flags | MAP_ANONYMOUS, -1, 0); - if (ret == -1) - return ret; + void *p = mmap(host_start, qemu_host_page_size, prot, + flags | MAP_ANONYMOUS, -1, 0); + if (p == MAP_FAILED) + return -1; prot1 = prot; } prot1 &= PAGE_BITS; @@ -168,7 +168,7 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, #ifdef DEBUG_MMAP { printf("mmap: start=0x" TARGET_FMT_lx - " len=0x" TARGET_FMT_lx " prot=%c%c%c flags=", + " len=0x" TARGET_FMT_lx " prot=%c%c%c flags=", start, len, prot & PROT_READ ? 'r' : '-', prot & PROT_WRITE ? 'w' : '-', @@ -230,16 +230,16 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, */ abi_ulong host_end; unsigned long host_aligned_start; + void *p; host_len = HOST_PAGE_ALIGN(host_len + qemu_host_page_size - qemu_real_host_page_size); - host_start = (unsigned long) mmap(real_start ? - g2h(real_start) : NULL, - host_len, prot, flags, - fd, host_offset); - if (host_start == -1) + p = mmap(real_start ? g2h(real_start) : NULL, + host_len, prot, flags, fd, host_offset); + if (p == MAP_FAILED) return -1; + host_start = (unsigned long)p; host_end = host_start + host_len; /* Find start and end, aligned to the targets pagesize with-in the @@ -260,11 +260,12 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, goto the_end1; } else { /* if not fixed, no need to do anything */ - host_start = (long)mmap(real_start ? g2h(real_start) : NULL, + void *p = mmap(real_start ? g2h(real_start) : NULL, host_len, prot, flags, fd, host_offset); - if (host_start == -1) + if (p == MAP_FAILED) return -1; /* update start so that it points to the file position at 'offset' */ + host_start = (unsigned long)p; if (!(flags & MAP_ANONYMOUS)) host_start += offset - host_offset; start = h2g(host_start); @@ -333,14 +334,15 @@ abi_long target_mmap(abi_ulong start, abi_ulong len, int prot, /* map the middle (easier) */ if (real_start < real_end) { + void *p; unsigned long offset1; - if (flags & MAP_ANONYMOUS) - offset1 = 0; - else - offset1 = offset + real_start - start; - ret = (long)mmap(g2h(real_start), real_end - real_start, - prot, flags, fd, offset1); - if (ret == -1) + if (flags & MAP_ANONYMOUS) + offset1 = 0; + else + offset1 = offset + real_start - start; + p = mmap(g2h(real_start), real_end - real_start, + prot, flags, fd, offset1); + if (p == MAP_FAILED) return -1; } the_end1: |