diff options
Diffstat (limited to 'src/runtime/sys_linux_amd64.s')
| -rw-r--r-- | src/runtime/sys_linux_amd64.s | 33 |
1 files changed, 33 insertions, 0 deletions
diff --git a/src/runtime/sys_linux_amd64.s b/src/runtime/sys_linux_amd64.s index b6c64dc095..941f70b0e8 100644 --- a/src/runtime/sys_linux_amd64.s +++ b/src/runtime/sys_linux_amd64.s @@ -704,3 +704,36 @@ TEXT runtime·sbrk0(SB),NOSPLIT,$0-8 SYSCALL MOVQ AX, ret+0(FP) RET + +// func vgetrandom1(buf *byte, length uintptr, flags uint32, state uintptr, stateSize uintptr) int +TEXT runtime·vgetrandom1<ABIInternal>(SB),NOSPLIT,$16-48 + MOVQ SI, R8 // stateSize + MOVL CX, DX // flags + MOVQ DI, CX // state + MOVQ BX, SI // length + MOVQ AX, DI // buf + + MOVQ SP, R12 + + MOVQ runtime·vdsoGetrandomSym(SB), AX + MOVQ g_m(R14), BX + + MOVQ m_vdsoPC(BX), R9 + MOVQ R9, 0(SP) + MOVQ m_vdsoSP(BX), R9 + MOVQ R9, 8(SP) + LEAQ buf+0(FP), R9 + MOVQ R9, m_vdsoSP(BX) + MOVQ -8(R9), R9 + MOVQ R9, m_vdsoPC(BX) + + ANDQ $~15, SP + + CALL AX + + MOVQ R12, SP + MOVQ 8(SP), R9 + MOVQ R9, m_vdsoSP(BX) + MOVQ 0(SP), R9 + MOVQ R9, m_vdsoPC(BX) + RET |