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add tlsdesc support for i386

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This commit is contained in:
Rich Felker 2014-06-19 02:50:45 -04:00
parent 880c479f0e
commit 4e0b4a5de7
2 changed files with 29 additions and 0 deletions
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2
arch/i386/reloc.h
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@ -26,6 +26,8 @@ static int remap_rel(int type)
return REL_TPOFF; return REL_TPOFF;
case R_386_TLS_TPOFF32: case R_386_TLS_TPOFF32:
return REL_TPOFF_NEG; return REL_TPOFF_NEG;
case R_386_TLS_DESC:
return REL_TLSDESC;
} }
return 0; return 0;
} }

27
src/ldso/i386/tlsdesc.s Normal file
View File

@ -0,0 +1,27 @@
.text
.global __tlsdesc_static
.type __tlsdesc_static,@function
__tlsdesc_static:
mov 4(%eax),%eax
ret
.global __tlsdesc_dynamic
.type __tlsdesc_dynamic,@function
__tlsdesc_dynamic:
mov 4(%eax),%eax
push %edx
mov %gs:4,%edx
push %ecx
mov (%eax),%ecx
cmp %ecx,(%edx)
jc 1f
mov 4(%eax),%eax
add (%edx,%ecx,4),%eax
2: pop %ecx
sub %gs:0,%eax
pop %edx
ret
1: push %eax
call __tls_get_addr
pop %ecx
jmp 2b