diff options
Diffstat (limited to 'src/runtime/sys_linux_ppc64x.s')
| -rw-r--r-- | src/runtime/sys_linux_ppc64x.s | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/runtime/sys_linux_ppc64x.s b/src/runtime/sys_linux_ppc64x.s index ba4988b723..8735b932ed 100644 --- a/src/runtime/sys_linux_ppc64x.s +++ b/src/runtime/sys_linux_ppc64x.s @@ -757,3 +757,53 @@ TEXT runtime·socket(SB),$0-20 MOVD R0, 0(R0) // unimplemented, only needed for android; declared in stubs_linux.go MOVW R0, ret+16(FP) // for vet RET + +// func vgetrandom1(buf *byte, length uintptr, flags uint32, state uintptr, stateSize uintptr) int +TEXT runtime·vgetrandom1<ABIInternal>(SB),NOSPLIT,$16-48 + MOVD R1, R15 + + MOVD runtime·vdsoGetrandomSym(SB), R12 + MOVD R12, CTR + MOVD g_m(g), R21 + + MOVD m_vdsoPC(R21), R22 + MOVD R22, 32(R1) + MOVD m_vdsoSP(R21), R22 + MOVD R22, 40(R1) + MOVD LR, m_vdsoPC(R21) + MOVD $buf-FIXED_FRAME(FP), R22 + MOVD R22, m_vdsoSP(R21) + + RLDICR $0, R1, $59, R1 + + MOVBZ runtime·iscgo(SB), R22 + CMP R22, $0 + BNE nosaveg + MOVD m_gsignal(R21), R22 + CMP R22, $0 + BEQ nosaveg + CMP R22, g + BEQ nosaveg + MOVD (g_stack+stack_lo)(R22), R22 + MOVD g, (R22) + + BL (CTR) + + MOVD $0, (R22) + JMP restore + +nosaveg: + BL (CTR) + +restore: + MOVD $0, R0 + MOVD R15, R1 + MOVD 40(R1), R22 + MOVD R22, m_vdsoSP(R21) + MOVD 32(R1), R22 + MOVD R22, m_vdsoPC(R21) + + BVC out + NEG R3, R3 +out: + RET |