diff options
Diffstat (limited to 'src/runtime/sys_linux_ppc64x.s')
| -rw-r--r-- | src/runtime/sys_linux_ppc64x.s | 108 |
1 files changed, 98 insertions, 10 deletions
diff --git a/src/runtime/sys_linux_ppc64x.s b/src/runtime/sys_linux_ppc64x.s index b7d34b00da..075adf2368 100644 --- a/src/runtime/sys_linux_ppc64x.s +++ b/src/runtime/sys_linux_ppc64x.s @@ -154,21 +154,87 @@ TEXT runtime·mincore(SB),NOSPLIT|NOFRAME,$0-28 // func walltime() (sec int64, nsec int32) TEXT runtime·walltime(SB),NOSPLIT,$16 - MOVD $0, R3 // CLOCK_REALTIME - MOVD $0(R1), R4 - SYSCALL $SYS_clock_gettime - MOVD 0(R1), R3 // sec - MOVD 8(R1), R5 // nsec + MOVD R1, R15 // R15 is unchanged by C code + MOVD g_m(g), R21 // R21 = m + + MOVD $0, R3 // CLOCK_REALTIME + + MOVD runtime·vdsoClockgettimeSym(SB), R12 // Check for VDSO availability + CMP R12, R0 + BEQ fallback + + // Set vdsoPC and vdsoSP for SIGPROF traceback. + MOVD LR, R14 + MOVD R14, m_vdsoPC(R21) + MOVD R15, m_vdsoSP(R21) + + MOVD m_curg(R21), R6 + CMP g, R6 + BNE noswitch + + MOVD m_g0(R21), R7 + MOVD (g_sched+gobuf_sp)(R7), R1 // Set SP to g0 stack + +noswitch: + SUB $16, R1 // Space for results + RLDICR $0, R1, $59, R1 // Align for C code + MOVD R12, CTR + MOVD R1, R4 + BL (CTR) // Call from VDSO + MOVD $0, R0 // Restore R0 + MOVD R0, m_vdsoSP(R21) // Clear vdsoSP + MOVD 0(R1), R3 // sec + MOVD 8(R1), R5 // nsec + MOVD R15, R1 // Restore SP + +finish: MOVD R3, sec+0(FP) MOVW R5, nsec+8(FP) RET + // Syscall fallback +fallback: + ADD $32, R1, R4 + SYSCALL $SYS_clock_gettime + MOVD 32(R1), R3 + MOVD 40(R1), R5 + JMP finish + TEXT runtime·nanotime(SB),NOSPLIT,$16 - MOVW $1, R3 // CLOCK_MONOTONIC - MOVD $0(R1), R4 - SYSCALL $SYS_clock_gettime - MOVD 0(R1), R3 // sec - MOVD 8(R1), R5 // nsec + MOVD $1, R3 // CLOCK_MONOTONIC + + MOVD R1, R15 // R15 is unchanged by C code + MOVD g_m(g), R21 // R21 = m + + MOVD runtime·vdsoClockgettimeSym(SB), R12 // Check for VDSO availability + CMP R12, R0 + BEQ fallback + + // Set vdsoPC and vdsoSP for SIGPROF traceback. + MOVD LR, R14 // R14 is unchanged by C code + MOVD R14, m_vdsoPC(R21) + MOVD R15, m_vdsoSP(R21) + + MOVD m_curg(R21), R6 + CMP g, R6 + BNE noswitch + + MOVD m_g0(R21), R7 + MOVD (g_sched+gobuf_sp)(R7), R1 // Set SP to g0 stack + +noswitch: + SUB $16, R1 // Space for results + RLDICR $0, R1, $59, R1 // Align for C code + MOVD R12, CTR + MOVD R1, R4 + BL (CTR) // Call from VDSO + MOVD $0, R0 // Restore R0 + MOVD $0, m_vdsoSP(R21) // Clear vdsoSP + MOVD 0(R1), R3 // sec + MOVD 8(R1), R5 // nsec + MOVD R15, R1 // Restore SP + +finish: // sec is in R3, nsec in R5 // return nsec in R3 MOVD $1000000000, R4 @@ -177,6 +243,14 @@ TEXT runtime·nanotime(SB),NOSPLIT,$16 MOVD R3, ret+0(FP) RET + // Syscall fallback +fallback: + ADD $32, R1, R4 + SYSCALL $SYS_clock_gettime + MOVD 32(R1), R3 + MOVD 48(R1), R5 + JMP finish + TEXT runtime·rtsigprocmask(SB),NOSPLIT|NOFRAME,$0-28 MOVW how+0(FP), R3 MOVD new+8(FP), R4 @@ -193,6 +267,8 @@ TEXT runtime·rt_sigaction(SB),NOSPLIT|NOFRAME,$0-36 MOVD old+16(FP), R5 MOVD size+24(FP), R6 SYSCALL $SYS_rt_sigaction + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+32(FP) RET @@ -388,6 +464,8 @@ TEXT runtime·futex(SB),NOSPLIT|NOFRAME,$0 MOVD addr2+24(FP), R7 MOVW val3+32(FP), R8 SYSCALL $SYS_futex + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+40(FP) RET @@ -409,6 +487,8 @@ TEXT runtime·clone(SB),NOSPLIT|NOFRAME,$0 MOVD R7, -32(R4) SYSCALL $SYS_clone + BVC 2(PC) + NEG R3 // caller expects negative errno // In parent, return. CMP R3, $0 @@ -472,6 +552,8 @@ TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0 MOVD len+8(FP), R4 MOVD buf+16(FP), R5 SYSCALL $SYS_sched_getaffinity + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+24(FP) RET @@ -479,6 +561,8 @@ TEXT runtime·sched_getaffinity(SB),NOSPLIT|NOFRAME,$0 TEXT runtime·epollcreate(SB),NOSPLIT|NOFRAME,$0 MOVW size+0(FP), R3 SYSCALL $SYS_epoll_create + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+8(FP) RET @@ -486,6 +570,8 @@ TEXT runtime·epollcreate(SB),NOSPLIT|NOFRAME,$0 TEXT runtime·epollcreate1(SB),NOSPLIT|NOFRAME,$0 MOVW flags+0(FP), R3 SYSCALL $SYS_epoll_create1 + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+8(FP) RET @@ -507,6 +593,8 @@ TEXT runtime·epollwait(SB),NOSPLIT|NOFRAME,$0 MOVW nev+16(FP), R5 MOVW timeout+20(FP), R6 SYSCALL $SYS_epoll_wait + BVC 2(PC) + NEG R3 // caller expects negative errno MOVW R3, ret+24(FP) RET |