diff options
Diffstat (limited to 'src/runtime/sys_linux_amd64.s')
| -rw-r--r-- | src/runtime/sys_linux_amd64.s | 17 |
1 files changed, 17 insertions, 0 deletions
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s index 37cb8dad03..d48573c2c5 100644 --- a/src/runtime/sys_linux_amd64.s +++ b/src/runtime/sys_linux_amd64.s @@ -215,9 +215,13 @@ TEXT runtime·walltime1(SB),NOSPLIT,$16-12 MOVQ SP, R12 // Save old SP; R12 unchanged by C code. +#ifdef GOEXPERIMENT_REGABI + MOVQ g_m(R14), BX // BX unchanged by C code. +#else get_tls(CX) MOVQ g(CX), AX MOVQ g_m(AX), BX // BX unchanged by C code. +#endif // Set vdsoPC and vdsoSP for SIGPROF traceback. // Save the old values on stack and restore them on exit, @@ -232,7 +236,11 @@ TEXT runtime·walltime1(SB),NOSPLIT,$16-12 MOVQ CX, m_vdsoPC(BX) MOVQ DX, m_vdsoSP(BX) +#ifdef GOEXPERIMENT_REGABI + CMPQ R14, m_curg(BX) // Only switch if on curg. +#else CMPQ AX, m_curg(BX) // Only switch if on curg. +#endif JNE noswitch MOVQ m_g0(BX), DX @@ -275,9 +283,13 @@ TEXT runtime·nanotime1(SB),NOSPLIT,$16-8 MOVQ SP, R12 // Save old SP; R12 unchanged by C code. +#ifdef GOEXPERIMENT_REGABI + MOVQ g_m(R14), BX // BX unchanged by C code. +#else get_tls(CX) MOVQ g(CX), AX MOVQ g_m(AX), BX // BX unchanged by C code. +#endif // Set vdsoPC and vdsoSP for SIGPROF traceback. // Save the old values on stack and restore them on exit, @@ -292,7 +304,11 @@ TEXT runtime·nanotime1(SB),NOSPLIT,$16-8 MOVQ CX, m_vdsoPC(BX) MOVQ DX, m_vdsoSP(BX) +#ifdef GOEXPERIMENT_REGABI + CMPQ R14, m_curg(BX) // Only switch if on curg. +#else CMPQ AX, m_curg(BX) // Only switch if on curg. +#endif JNE noswitch MOVQ m_g0(BX), DX @@ -632,6 +648,7 @@ nog1: get_tls(CX) MOVQ R13, g_m(R9) MOVQ R9, g(CX) + MOVQ R9, R14 // set g register CALL runtime·stackcheck(SB) nog2: |