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AT_NUMBER grew; also fix %edx clobbered during copy of auxv

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committer: jreiser <jreiser> 1036866268 +0000
This commit is contained in:
John Reiser 2002-11-09 18:24:28 +00:00
parent b6c84d19ab
commit 33ec757c41
1 changed files with 7 additions and 5 deletions
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12
src/stub/fold_sh86.asm
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@ -59,7 +59,8 @@ fold_begin: ; enter: %ebx= uncDst
%define AT_NULL 0
%define AT_IGNORE 1
%define AT_PHDR 3
%define AT_NUMBER 20
%define AT_NUMBER (5+ 23)
; 2002-11-09 glibc-2.2.90 AT_IGNOREPPC==22 plus 5 for future growth
mov esi, esp
sub esp, sz_auxv * AT_NUMBER ; more than 128 bytes
@ -82,7 +83,8 @@ L20: ; move envp
; complete Elf_auxv table full of AT_IGNORE
push edi ; save base of resulting table
inc eax ; convert 0 to AT_IGNORE
mov ecx, 2 * (AT_NUMBER -1)
push byte 2 * (AT_NUMBER -1) ; less than 128
pop ecx
rep stosd
dec eax ; convert AT_IGNORE into AT_NULL
stosd ; terminate Elf_auxv
@ -92,11 +94,11 @@ L20: ; move envp
L30: ; distribute existing Elf32_auxv into new table
lodsd
test eax,eax ; AT_NULL ?
xchg eax,edx
xchg eax,ecx ; edx is busy, do not use
lodsd
je L40
mov [a_type + sz_auxv*(edx -1) + edi], edx
mov [a_val + sz_auxv*(edx -1) + edi], eax
mov [a_type + sz_auxv*(ecx -1) + edi], ecx
mov [a_val + sz_auxv*(ecx -1) + edi], eax
jmp L30
L40: