diff options
Diffstat (limited to 'src/runtime/sys_linux_s390x.s')
| -rw-r--r-- | src/runtime/sys_linux_s390x.s | 50 |
1 files changed, 50 insertions, 0 deletions
diff --git a/src/runtime/sys_linux_s390x.s b/src/runtime/sys_linux_s390x.s index adf5612c3c..7da4a52729 100644 --- a/src/runtime/sys_linux_s390x.s +++ b/src/runtime/sys_linux_s390x.s @@ -604,3 +604,53 @@ TEXT runtime·socket(SB),$0-20 MOVD $0, 2(R0) // unimplemented, only needed for android; declared in stubs_linux.go MOVW R0, ret+16(FP) RET + +// func vgetrandom1(buf *byte, length uintptr, flags uint32, state uintptr, stateSize uintptr) int +TEXT runtime·vgetrandom1(SB),NOSPLIT,$16-48 + MOVD buf+0(FP), R2 + MOVD length+8(FP), R3 + MOVW flags+16(FP), R4 + MOVD state+24(FP), R5 + MOVD stateSize+32(FP), R6 + + MOVD R15, R7 + + MOVD runtime·vdsoGetrandomSym(SB), R1 + MOVD g_m(g), R9 + + MOVD m_vdsoPC(R9), R12 + MOVD R12, 8(R15) + MOVD m_vdsoSP(R9), R12 + MOVD R12, 16(R15) + MOVD R14, m_vdsoPC(R9) + MOVD $buf+0(FP), R12 + MOVD R12, m_vdsoSP(R9) + + SUB $160, R15 + MOVD $~7, R12 + AND R12, R15 + + MOVB runtime·iscgo(SB), R12 + CMPBNE R12, $0, nosaveg + MOVD m_gsignal(R9), R12 + CMPBEQ R12, $0, nosaveg + CMPBEQ g, R12, nosaveg + MOVD (g_stack+stack_lo)(R12), R12 + MOVD g, (R12) + + BL R1 + + MOVD $0, (R12) + JMP restore + +nosaveg: + BL R1 + +restore: + MOVD R7, R15 + MOVD 16(R15), R12 + MOVD R12, m_vdsoSP(R9) + MOVD 8(R15), R12 + MOVD R12, m_vdsoPC(R9) + MOVD R2, ret+40(FP) + RET |