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x86: Work around clang bugs

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http://llvm.org/bugs/show_bug.cgi?21500
http://llvm.org/bugs/show_bug.cgi?21501
http://llvm.org/bugs/show_bug.cgi?21515
This commit is contained in:
Richard Henderson
2014-11-12 03:58:58 -08:00
parent 6eec410f15
commit 0e303c0657
2 changed files with 91 additions and 66 deletions
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18
src/x86/unix64.S
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@@ -35,9 +35,15 @@
.text
/* This macro allows the safe creation of jump tables without an
actual table. The entry points into the table are all 8 bytes.
The use of ORG asserts that we're at the correct location. */
/* ??? The clang assembler doesn't handle .org with symbolic expressions. */
.macro E index
.align 8
#ifndef __clang__
.org 0b + \index * 8, 0x90
#endif
.endm
/* ffi_call_unix64 (void *args, unsigned long bytes, unsigned flags,
@@ -220,7 +226,8 @@ E UNIX64_RET_ST_RAX_RDX
ffi_closure_unix64_sse:
cfi_startproc
subq $ffi_closure_FS, %rsp
cfi_adjust_cfa_offset(ffi_closure_FS)
/* Note clang bug 21515: adjust_cfa_offset error across endproc. */
cfi_def_cfa_offset(ffi_closure_FS + 8)
movdqa %xmm0, ffi_closure_OFS_V+0x00(%rsp)
movdqa %xmm1, ffi_closure_OFS_V+0x10(%rsp)
@@ -243,7 +250,8 @@ ffi_closure_unix64_sse:
ffi_closure_unix64:
cfi_startproc
subq $ffi_closure_FS, %rsp
cfi_adjust_cfa_offset(ffi_closure_FS)
/* Note clang bug 21515: adjust_cfa_offset error across endproc. */
cfi_def_cfa_offset(ffi_closure_FS + 8)
0:
movq %rdi, ffi_closure_OFS_G+0x00(%rsp)
movq %rsi, ffi_closure_OFS_G+0x08(%rsp)
@@ -348,7 +356,8 @@ E UNIX64_RET_ST_RAX_RDX
ffi_go_closure_unix64_sse:
cfi_startproc
subq $ffi_closure_FS, %rsp
cfi_adjust_cfa_offset(ffi_closure_FS)
/* Note clang bug 21515: adjust_cfa_offset error across endproc. */
cfi_def_cfa_offset(ffi_closure_FS + 8)
movdqa %xmm0, ffi_closure_OFS_V+0x00(%rsp)
movdqa %xmm1, ffi_closure_OFS_V+0x10(%rsp)
@@ -371,7 +380,8 @@ ffi_go_closure_unix64_sse:
ffi_go_closure_unix64:
cfi_startproc
subq $ffi_closure_FS, %rsp
cfi_adjust_cfa_offset(ffi_closure_FS)
/* Note clang bug 21515: adjust_cfa_offset error across endproc. */
cfi_def_cfa_offset(ffi_closure_FS + 8)
0:
movq %rdi, ffi_closure_OFS_G+0x00(%rsp)
movq %rsi, ffi_closure_OFS_G+0x08(%rsp)