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bFLT loader alignment fix.

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git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2669 c046a42c-6fe2-441c-8c8c-71466251a162
This commit is contained in:
pbrook 2007-04-15 14:13:11 +00:00
parent 080a0ba4b1
commit 2a1094cd88
1 changed files with 11 additions and 8 deletions
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19
linux-user/flatload.c
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@ -393,6 +393,7 @@ static int load_flat_file(struct linux_binprm * bprm,
int i, rev, relocs = 0; int i, rev, relocs = 0;
target_ulong fpos; target_ulong fpos;
target_ulong start_code, end_code; target_ulong start_code, end_code;
target_ulong indx_len;
hdr = ((struct flat_hdr *) bprm->buf); /* exec-header */ hdr = ((struct flat_hdr *) bprm->buf); /* exec-header */
@ -443,6 +444,11 @@ static int load_flat_file(struct linux_binprm * bprm,
if (extra < bss_len + stack_len) if (extra < bss_len + stack_len)
extra = bss_len + stack_len; extra = bss_len + stack_len;
/* Add space for library base pointers. Make sure this does not
misalign the doesn't misalign the data segment. */
indx_len = MAX_SHARED_LIBS * sizeof(target_ulong);
indx_len = (indx_len + 15) & ~(target_ulong)15;
/* /*
* there are a couple of cases here, the separate code/data * there are a couple of cases here, the separate code/data
* case, and then the fully copied to RAM case which lumps * case, and then the fully copied to RAM case which lumps
@ -462,8 +468,7 @@ static int load_flat_file(struct linux_binprm * bprm,
return -1; return -1;
} }
realdatastart = target_mmap(0, data_len + extra + realdatastart = target_mmap(0, data_len + extra + indx_len,
MAX_SHARED_LIBS * sizeof(target_ulong),
PROT_READ|PROT_WRITE|PROT_EXEC, PROT_READ|PROT_WRITE|PROT_EXEC,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
@ -471,7 +476,7 @@ static int load_flat_file(struct linux_binprm * bprm,
fprintf(stderr, "Unable to allocate RAM for process data\n"); fprintf(stderr, "Unable to allocate RAM for process data\n");
return realdatastart; return realdatastart;
} }
datapos = realdatastart + MAX_SHARED_LIBS * sizeof(target_ulong); datapos = realdatastart + indx_len;
DBG_FLT("BINFMT_FLAT: Allocated data+bss+stack (%d bytes): %x\n", DBG_FLT("BINFMT_FLAT: Allocated data+bss+stack (%d bytes): %x\n",
(int)(data_len + bss_len + stack_len), (int)datapos); (int)(data_len + bss_len + stack_len), (int)datapos);
@ -498,8 +503,7 @@ static int load_flat_file(struct linux_binprm * bprm,
} else { } else {
textpos = target_mmap(0, text_len + data_len + extra + textpos = target_mmap(0, text_len + data_len + extra + indx_len,
MAX_SHARED_LIBS * sizeof(target_ulong),
PROT_READ | PROT_EXEC | PROT_WRITE, PROT_READ | PROT_EXEC | PROT_WRITE,
MAP_PRIVATE | MAP_ANONYMOUS, -1, 0); MAP_PRIVATE | MAP_ANONYMOUS, -1, 0);
if (textpos == -1 ) { if (textpos == -1 ) {
@ -508,9 +512,8 @@ static int load_flat_file(struct linux_binprm * bprm,
} }
realdatastart = textpos + ntohl(hdr->data_start); realdatastart = textpos + ntohl(hdr->data_start);
datapos = realdatastart + MAX_SHARED_LIBS * sizeof(target_ulong); datapos = realdatastart + indx_len;
reloc = (textpos + ntohl(hdr->reloc_start) + reloc = (textpos + ntohl(hdr->reloc_start) + indx_len);
MAX_SHARED_LIBS * sizeof(target_ulong));
memp = textpos; memp = textpos;
#ifdef CONFIG_BINFMT_ZFLAT #ifdef CONFIG_BINFMT_ZFLAT