Andrew Morton reported that AES-NI CTR optimization failed to compile with gas 2.16.1, the error message is as follow: arch/x86/crypto/aesni-intel_asm.S: Assembler messages: arch/x86/crypto/aesni-intel_asm.S:752: Error: suffix or operands invalid for `movq' arch/x86/crypto/aesni-intel_asm.S:753: Error: suffix or operands invalid for `movq' To fix this, a gas macro is defined to assemble movq with 64bit general purpose registers and XMM registers. The macro will generate the raw .byte sequence for needed instructions. Reported-by: Andrew Morton <akpm@xxxxxxxxxxxxxxxxxxxx> Signed-off-by: Huang Ying <ying.huang@xxxxxxxxx> --- arch/x86/crypto/aesni-intel_asm.S | 4 - arch/x86/include/asm/inst.h | 96 ++++++++++++++++++++++++++++++++++++-- 2 files changed, 95 insertions(+), 5 deletions(-) --- a/arch/x86/crypto/aesni-intel_asm.S +++ b/arch/x86/crypto/aesni-intel_asm.S @@ -749,8 +749,8 @@ _aesni_inc_init: movaps IV, CTR PSHUFB_XMM BSWAP_MASK CTR mov $1, TCTR_LOW - movq TCTR_LOW, INC - movq CTR, TCTR_LOW + MOVQ_R64_XMM TCTR_LOW INC + MOVQ_R64_XMM CTR TCTR_LOW ret /* --- a/arch/x86/include/asm/inst.h +++ b/arch/x86/include/asm/inst.h @@ -7,7 +7,66 @@ #ifdef __ASSEMBLY__ +#define REG_NUM_INVALID 100 + +#define REG_TYPE_R64 0 +#define REG_TYPE_XMM 1 +#define REG_TYPE_INVALID 100 + + .macro R64_NUM opd r64 + \opd = REG_NUM_INVALID + .ifc \r64,%rax + \opd = 0 + .endif + .ifc \r64,%rcx + \opd = 1 + .endif + .ifc \r64,%rdx + \opd = 2 + .endif + .ifc \r64,%rbx + \opd = 3 + .endif + .ifc \r64,%rsp + \opd = 4 + .endif + .ifc \r64,%rbp + \opd = 5 + .endif + .ifc \r64,%rsi + \opd = 6 + .endif + .ifc \r64,%rdi + \opd = 7 + .endif + .ifc \r64,%r8 + \opd = 8 + .endif + .ifc \r64,%r9 + \opd = 9 + .endif + .ifc \r64,%r10 + \opd = 10 + .endif + .ifc \r64,%r11 + \opd = 11 + .endif + .ifc \r64,%r12 + \opd = 12 + .endif + .ifc \r64,%r13 + \opd = 13 + .endif + .ifc \r64,%r14 + \opd = 14 + .endif + .ifc \r64,%r15 + \opd = 15 + .endif + .endm + .macro XMM_NUM opd xmm + \opd = REG_NUM_INVALID .ifc \xmm,%xmm0 \opd = 0 .endif @@ -58,13 +117,25 @@ .endif .endm + .macro REG_TYPE type 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_xmm != REG_NUM_INVALID + \type = REG_TYPE_XMM + .else + \type = REG_TYPE_INVALID + .endif + .endm + .macro PFX_OPD_SIZE .byte 0x66 .endm - .macro PFX_REX opd1 opd2 - .if (\opd1 | \opd2) & 8 - .byte 0x40 | ((\opd1 & 8) >> 3) | ((\opd2 & 8) >> 1) + .macro PFX_REX opd1 opd2 W=0 + .if ((\opd1 | \opd2) & 8) || \W + .byte 0x40 | ((\opd1 & 8) >> 3) | ((\opd2 & 8) >> 1) | (\W << 3) .endif .endm @@ -145,6 +216,25 @@ .byte 0x0f, 0x38, 0xdf MODRM 0xc0 aesdeclast_opd1 aesdeclast_opd2 .endm + + .macro MOVQ_R64_XMM opd1 opd2 + REG_TYPE movq_r64_xmm_opd1_type \opd1 + .if movq_r64_xmm_opd1_type == REG_TYPE_XMM + XMM_NUM movq_r64_xmm_opd1 \opd1 + R64_NUM movq_r64_xmm_opd2 \opd2 + .else + R64_NUM movq_r64_xmm_opd1 \opd1 + XMM_NUM movq_r64_xmm_opd2 \opd2 + .endif + PFX_OPD_SIZE + PFX_REX movq_r64_xmm_opd1 movq_r64_xmm_opd2 1 + .if movq_r64_xmm_opd1_type == REG_TYPE_XMM + .byte 0x0f, 0x7e + .else + .byte 0x0f, 0x6e + .endif + MODRM 0xc0 movq_r64_xmm_opd1 movq_r64_xmm_opd2 + .endm #endif #endif -- To unsubscribe from this list: send the line "unsubscribe linux-crypto" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
