[PATCH] msvcrt: Optimize the aarch64 setjmp/longjmp using stp/ldp
stp/ldp don't require any more alignment than the normal str/ldr. Signed-off-by: Martin Storsjo <martin(a)martin.st> --- dlls/msvcrt/except_arm64.c | 74 +++++++++++++++++----------------------------- 1 file changed, 27 insertions(+), 47 deletions(-) diff --git a/dlls/msvcrt/except_arm64.c b/dlls/msvcrt/except_arm64.c index 904d006..2576928 100644 --- a/dlls/msvcrt/except_arm64.c +++ b/dlls/msvcrt/except_arm64.c @@ -141,65 +141,45 @@ __ASM_GLOBAL_FUNC(MSVCRT__setjmp, * _setjmpex (MSVCRT.@) */ __ASM_GLOBAL_FUNC(MSVCRT__setjmpex, - "str x1, [x0]\n\t" /* jmp_buf->Frame */ - "str x19, [x0, #0x10]\n\t" /* jmp_buf->X19 */ - "str x20, [x0, #0x18]\n\t" /* jmp_buf->X20 */ - "str x21, [x0, #0x20]\n\t" /* jmp_buf->X21 */ - "str x22, [x0, #0x28]\n\t" /* jmp_buf->X22 */ - "str x23, [x0, #0x30]\n\t" /* jmp_buf->X23 */ - "str x24, [x0, #0x38]\n\t" /* jmp_buf->X24 */ - "str x25, [x0, #0x40]\n\t" /* jmp_buf->X25 */ - "str x26, [x0, #0x48]\n\t" /* jmp_buf->X26 */ - "str x27, [x0, #0x50]\n\t" /* jmp_buf->X27 */ - "str x28, [x0, #0x58]\n\t" /* jmp_buf->X28 */ - "str x29, [x0, #0x60]\n\t" /* jmp_buf->Fp */ - "str x30, [x0, #0x68]\n\t" /* jmp_buf->Lr */ + "str x1, [x0]\n\t" /* jmp_buf->Frame */ + "stp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */ + "stp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */ + "stp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */ + "stp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */ + "stp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */ + "stp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */ "mov x2, sp\n\t" - "str x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ + "str x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ "mrs x2, fpcr\n\t" - "str w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ + "str w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ "mrs x2, fpsr\n\t" - "str w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ - "str d8, [x0, #0x80]\n\t" /* jmp_buf->D[0] */ - "str d9, [x0, #0x88]\n\t" /* jmp_buf->D[1] */ - "str d10, [x0, #0x90]\n\t" /* jmp_buf->D[2] */ - "str d11, [x0, #0x98]\n\t" /* jmp_buf->D[3] */ - "str d12, [x0, #0xa0]\n\t" /* jmp_buf->D[4] */ - "str d13, [x0, #0xa8]\n\t" /* jmp_buf->D[5] */ - "str d14, [x0, #0xb0]\n\t" /* jmp_buf->D[6] */ - "str d15, [x0, #0xb8]\n\t" /* jmp_buf->D[7] */ + "str w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ + "stp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */ + "stp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */ + "stp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */ + "stp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */ "mov x0, #0\n\t" "ret"); extern void DECLSPEC_NORETURN CDECL longjmp_set_regs(struct MSVCRT___JUMP_BUFFER *jmp, int retval); __ASM_GLOBAL_FUNC(longjmp_set_regs, - "ldr x19, [x0, #0x10]\n\t" /* jmp_buf->X19 */ - "ldr x20, [x0, #0x18]\n\t" /* jmp_buf->X20 */ - "ldr x21, [x0, #0x20]\n\t" /* jmp_buf->X21 */ - "ldr x22, [x0, #0x28]\n\t" /* jmp_buf->X22 */ - "ldr x23, [x0, #0x30]\n\t" /* jmp_buf->X23 */ - "ldr x24, [x0, #0x38]\n\t" /* jmp_buf->X24 */ - "ldr x25, [x0, #0x40]\n\t" /* jmp_buf->X25 */ - "ldr x26, [x0, #0x48]\n\t" /* jmp_buf->X26 */ - "ldr x27, [x0, #0x50]\n\t" /* jmp_buf->X27 */ - "ldr x28, [x0, #0x58]\n\t" /* jmp_buf->X28 */ - "ldr x29, [x0, #0x60]\n\t" /* jmp_buf->Fp */ - "ldr x30, [x0, #0x68]\n\t" /* jmp_buf->Lr */ - "ldr x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ + "ldp x19, x20, [x0, #0x10]\n\t" /* jmp_buf->X19, X20 */ + "ldp x21, x22, [x0, #0x20]\n\t" /* jmp_buf->X21, X22 */ + "ldp x23, x24, [x0, #0x30]\n\t" /* jmp_buf->X23, X24 */ + "ldp x25, x26, [x0, #0x40]\n\t" /* jmp_buf->X25, X26 */ + "ldp x27, x28, [x0, #0x50]\n\t" /* jmp_buf->X27, X28 */ + "ldp x29, x30, [x0, #0x60]\n\t" /* jmp_buf->Fp, Lr */ + "ldr x2, [x0, #0x70]\n\t" /* jmp_buf->Sp */ "mov sp, x2\n\t" - "ldr w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ + "ldr w2, [x0, #0x78]\n\t" /* jmp_buf->Fpcr */ "msr fpcr, x2\n\t" - "ldr w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ + "ldr w2, [x0, #0x7c]\n\t" /* jmp_buf->Fpsr */ "msr fpsr, x2\n\t" - "ldr d8, [x0, #0x80]\n\t" /* jmp_buf->D[0] */ - "ldr d9, [x0, #0x88]\n\t" /* jmp_buf->D[1] */ - "ldr d10, [x0, #0x90]\n\t" /* jmp_buf->D[2] */ - "ldr d11, [x0, #0x98]\n\t" /* jmp_buf->D[3] */ - "ldr d12, [x0, #0xa0]\n\t" /* jmp_buf->D[4] */ - "ldr d13, [x0, #0xa8]\n\t" /* jmp_buf->D[5] */ - "ldr d14, [x0, #0xb0]\n\t" /* jmp_buf->D[6] */ - "ldr d15, [x0, #0xb8]\n\t" /* jmp_buf->D[7] */ + "ldp d8, d9, [x0, #0x80]\n\t" /* jmp_buf->D[0-1] */ + "ldp d10, d11, [x0, #0x90]\n\t" /* jmp_buf->D[2-3] */ + "ldp d12, d13, [x0, #0xa0]\n\t" /* jmp_buf->D[4-5] */ + "ldp d14, d15, [x0, #0xb0]\n\t" /* jmp_buf->D[6-7] */ "mov x0, x1\n\t" /* retval */ "ret"); -- 2.7.4
participants (2)
-
Martin Storsjo -
Piotr Caban