diff options
| author | Miod Vallat <miod@cvs.openbsd.org> | 2024-03-29 21:23:18 +0000 |
|---|---|---|
| committer | Miod Vallat <miod@cvs.openbsd.org> | 2024-03-29 21:23:18 +0000 |
| commit | b42ccb0b8391a079444dbf9953b6fe2868250723 (patch) | |
| tree | db6d6d1668e2184a3da1ef742a6f5082ebcb40c4 /sys/arch/sparc64 | |
| parent | 0b305dac5e6a2668d313b6494c9042dd5edccf6d (diff) | |
Simplify two more places where we don't need to check for unbiased stacks.
ok claudio@ kettenis@
Diffstat (limited to 'sys/arch/sparc64')
| -rw-r--r-- | sys/arch/sparc64/sparc64/locore.s | 21 |
1 files changed, 4 insertions, 17 deletions
diff --git a/sys/arch/sparc64/sparc64/locore.s b/sys/arch/sparc64/sparc64/locore.s index 2c134c2bb68..6052cb46d2f 100644 --- a/sys/arch/sparc64/sparc64/locore.s +++ b/sys/arch/sparc64/sparc64/locore.s @@ -1,4 +1,4 @@ -/* $OpenBSD: locore.s,v 1.211 2024/03/29 21:20:03 miod Exp $ */ +/* $OpenBSD: locore.s,v 1.212 2024/03/29 21:23:17 miod Exp $ */ /* $NetBSD: locore.s,v 1.137 2001/08/13 06:10:10 jdolecek Exp $ */ /* @@ -1387,7 +1387,7 @@ panic_red: .macro TRAP_SETUP stackspace GET_CPCB(%g6) sethi %hi((\stackspace)), %g5 - sethi %hi(USPACE), %g7 ! Always multiple of page size + set USPACE-BIAS, %g7 or %g5, %lo((\stackspace)), %g5 sra %g5, 0, %g5 ! Sign extend the damn thing @@ -1397,13 +1397,7 @@ panic_red: sub %g7, WSTATE_KERN, %g7 ! Compare & leave in register movrz %g7, %sp, %g6 ! Select old (kernel) stack or base of kernel stack - btst 1, %g6 ! Fixup 64-bit stack if necessary - bnz,pt %icc, 1f - add %g6, %g5, %g6 ! Allocate a stack frame - inc -BIAS, %g6 - nop - nop -1: + add %g6, %g5, %g6 ! Allocate a stack frame SPILL stx, %g6 + CC64FSZ + BIAS + TF_L, 8, ! save local + in save %g6, 0, %sp ! If we fault we should come right back here stx %i0, [%sp + CC64FSZ + BIAS + TF_O + (0*8)] ! Save out registers to trap frame @@ -1460,14 +1454,7 @@ panic_red: movrz %g4, %sp, %g6 - add %g6, %g5, %g5 ! Allocate a stack frame - btst 1, %g6 - bnz,pt %icc, 1f - mov %g5, %g6 - - add %g5, -BIAS, %g6 - -1: + add %g6, %g5, %g6 ! Allocate a stack frame SPILL stx, %g6 + CC64FSZ + BIAS + TF_L, 8, ! save local+in to trap frame save %g6, 0, %sp ! If we fault we should come right back here stx %i0, [%sp + CC64FSZ + BIAS + TF_O + (0*8)] ! Save out registers to trap frame |