Minki/linux
1
0
Fork 1
mirror of https://github.com/torvalds/linux.git synced 2024-11-27 06:31:52 +00:00
Code Issues Packages Projects Releases Wiki Activity

x86, crc32-pclmul: Fix build with older binutils

Browse Source 
binutils prior to 2.18 (e.g. the ones found on SLE10) don't support
assembling PEXTRD, so a macro based approach like the one for PCLMULQDQ
in the same file should be used.

This requires making the helper macros capable of recognizing 32-bit
general purpose register operands.

[ hpa: tagging for stable as it is a low risk build fix ]

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Link: http://lkml.kernel.org/r/51A6142A02000078000D99D8@nat28.tlf.novell.com
Cc: Alexander Boyko <alexander_boyko@xyratex.com>
Cc: Herbert Xu <herbert@gondor.apana.org.au>
Cc: Huang Ying <ying.huang@intel.com>
Cc: <stable@vger.kernel.org> v3.9
Signed-off-by: H. Peter Anvin <hpa@linux.intel.com>
This commit is contained in:
Jan Beulich 2013-05-29 13:43:54 +01:00 committed by H. Peter Anvin
parent e9d0626ed4
commit 2baad6121e
2 changed files with 73 additions and 3 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

2
arch/x86/crypto/crc32-pclmul_asm.S
View File

@ -240,7 +240,7 @@ fold_64:
pand %xmm3, %xmm1
PCLMULQDQ 0x00, CONSTANT, %xmm1
pxor %xmm2, %xmm1
pextrd $0x01, %xmm1, %eax
PEXTRD 0x01, %xmm1, %eax
ret
ENDPROC(crc32_pclmul_le_16)

74
arch/x86/include/asm/inst.h
View File

@ -9,12 +9,68 @@
#define REG_NUM_INVALID 100
#define REG_TYPE_R64 0
#define REG_TYPE_XMM 1
#define REG_TYPE_R32 0
#define REG_TYPE_R64 1
#define REG_TYPE_XMM 2
#define REG_TYPE_INVALID 100
.macro R32_NUM opd r32
\opd = REG_NUM_INVALID
.ifc \r32,%eax
\opd = 0
.endif
.ifc \r32,%ecx
\opd = 1
.endif
.ifc \r32,%edx
\opd = 2
.endif
.ifc \r32,%ebx
\opd = 3
.endif
.ifc \r32,%esp
\opd = 4
.endif
.ifc \r32,%ebp
\opd = 5
.endif
.ifc \r32,%esi
\opd = 6
.endif
.ifc \r32,%edi
\opd = 7
.endif
#ifdef CONFIG_X86_64
.ifc \r32,%r8d
\opd = 8
.endif
.ifc \r32,%r9d
\opd = 9
.endif
.ifc \r32,%r10d
\opd = 10
.endif
.ifc \r32,%r11d
\opd = 11
.endif
.ifc \r32,%r12d
\opd = 12
.endif
.ifc \r32,%r13d
\opd = 13
.endif
.ifc \r32,%r14d
\opd = 14
.endif
.ifc \r32,%r15d
\opd = 15
.endif
#endif
.endm
.macro R64_NUM opd r64
\opd = REG_NUM_INVALID
#ifdef CONFIG_X86_64
.ifc \r64,%rax
\opd = 0
.endif
@ -63,6 +119,7 @@
.ifc \r64,%r15
\opd = 15
.endif
#endif
.endm
.macro XMM_NUM opd xmm
@ -118,10 +175,13 @@
.endm
.macro REG_TYPE type reg
R32_NUM reg_type_r32 \reg
R64_NUM reg_type_r64 \reg
XMM_NUM reg_type_xmm \reg
.if reg_type_r64 <> REG_NUM_INVALID
\type = REG_TYPE_R64
.elseif reg_type_r32 <> REG_NUM_INVALID
\type = REG_TYPE_R32
.elseif reg_type_xmm <> REG_NUM_INVALID
\type = REG_TYPE_XMM
.else
@ -162,6 +222,16 @@
.byte \imm8
.endm
.macro PEXTRD imm8 xmm gpr
R32_NUM extrd_opd1 \gpr
XMM_NUM extrd_opd2 \xmm
PFX_OPD_SIZE
PFX_REX extrd_opd1 extrd_opd2
.byte 0x0f, 0x3a, 0x16
MODRM 0xc0 extrd_opd1 extrd_opd2
.byte \imm8
.endm
.macro AESKEYGENASSIST rcon xmm1 xmm2
XMM_NUM aeskeygen_opd1 \xmm1
XMM_NUM aeskeygen_opd2 \xmm2