diff options
| author | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-05-27 14:33:40 +0000 |
|---|---|---|
| committer | Mark Kettenis <kettenis@cvs.openbsd.org> | 2017-05-27 14:33:40 +0000 |
| commit | 497ebe0032d5b8fc74c2b66a81e9d203702b70e3 (patch) | |
| tree | 59015df45cf67060da2c08c80fef165b2320f12b /sys/arch | |
| parent | 24862bb4a99551f5bc927ec772f7ddcbf1cce2c5 (diff) | |
Implement copyin32(9) for alpha.
Diffstat (limited to 'sys/arch')
| -rw-r--r-- | sys/arch/alpha/alpha/locore.s | 28 |
1 files changed, 27 insertions, 1 deletions
diff --git a/sys/arch/alpha/alpha/locore.s b/sys/arch/alpha/alpha/locore.s index 61445b260d6..a55cec33c62 100644 --- a/sys/arch/alpha/alpha/locore.s +++ b/sys/arch/alpha/alpha/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.45 2016/05/23 20:11:48 deraadt Exp $ */ +/* $OpenBSD: locore.s,v 1.46 2017/05/27 14:33:39 kettenis Exp $ */ /* $NetBSD: locore.s,v 1.94 2001/04/26 03:10:44 ross Exp $ */ /*- @@ -1033,6 +1033,32 @@ NESTED(copyout, 3, 16, ra, IM_RA|IM_S0, 0) RET END(copyout) +NESTED(copyin32, 2, 16, ra, IM_RA|IM_S0, 0) + LDGP(pv) + and a0, 0x3, t0 /* make sure that src addr */ + bne t0, copyfault /* is properly aligned. */ + ldiq t0, VM_MAX_ADDRESS /* make sure that src addr */ + cmpult a0, t0, t1 /* is in user space. */ + beq t1, copyfault /* if it's not, error out. */ + lda sp, -16(sp) /* set up stack frame */ + stq ra, (16-8)(sp) /* save ra */ + stq s0, (16-16)(sp) /* save s0 */ + /* Note: GET_CURPROC clobbers v0, t0, t8...t11. */ + GET_CURPROC + ldq t0, 0(v0) + ldq s0, P_ADDR(t0) + lda v0, copyerr /* set up fault handler. */ + stq v0, U_PCB_ONFAULT(s0) + ldl t0, 0(a0) + stl t0, 0(a1) + stq zero, U_PCB_ONFAULT(s0) /* kill the fault handler. */ + ldq ra, (16-8)(sp) /* restore ra. */ + ldq s0, (16-16)(sp) /* restore s0. */ + lda sp, 16(sp) /* kill stack frame. */ + mov zero, v0 /* return 0. */ + RET + END(copyin32) + LEAF(copyerr, 0) LDGP(pv) stq zero, U_PCB_ONFAULT(s0) /* kill the fault handler. */ |