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authorDavid S. Miller <davem@sunset.davemloft.net>2006-11-19 14:38:25 -0800
committerDavid S. Miller <davem@sunset.davemloft.net>2006-12-10 02:39:32 -0800
commit6e7726e16fb5e8f1169dbfcb75e321ac871af827 (patch)
tree799f6f6a0041b63565b07f91b9cf95f986d97e15 /arch/sparc64
parent042cf50cfd0bc3e1769d8287465eb522e8a08ba6 (diff)
downloadlinux-6e7726e16fb5e8f1169dbfcb75e321ac871af827.tar.bz2
[SPARC64]: Call do_mathemu on illegal instruction traps too.
To add this logic, put the VIS instruction check at the vis_emul() call site instead of inside of vis_emul(). Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'arch/sparc64')
-rw-r--r--arch/sparc64/kernel/traps.c18
-rw-r--r--arch/sparc64/kernel/visemul.c6
2 files changed, 15 insertions, 9 deletions
diff --git a/arch/sparc64/kernel/traps.c b/arch/sparc64/kernel/traps.c
index fe1796c939c3..ec7a60142bec 100644
--- a/arch/sparc64/kernel/traps.c
+++ b/arch/sparc64/kernel/traps.c
@@ -2261,8 +2261,12 @@ void die_if_kernel(char *str, struct pt_regs *regs)
do_exit(SIGSEGV);
}
+#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
+#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
+
extern int handle_popc(u32 insn, struct pt_regs *regs);
extern int handle_ldf_stq(u32 insn, struct pt_regs *regs);
+extern int vis_emul(struct pt_regs *, unsigned int);
void do_illegal_instruction(struct pt_regs *regs)
{
@@ -2287,10 +2291,18 @@ void do_illegal_instruction(struct pt_regs *regs)
if (handle_ldf_stq(insn, regs))
return;
} else if (tlb_type == hypervisor) {
- extern int vis_emul(struct pt_regs *, unsigned int);
+ if ((insn & VIS_OPCODE_MASK) == VIS_OPCODE_VAL) {
+ if (!vis_emul(regs, insn))
+ return;
+ } else {
+ struct fpustate *f = FPUSTATE;
- if (!vis_emul(regs, insn))
- return;
+ /* XXX maybe verify XFSR bits like
+ * XXX do_fpother() does?
+ */
+ if (do_mathemu(regs, f))
+ return;
+ }
}
}
info.si_signo = SIGILL;
diff --git a/arch/sparc64/kernel/visemul.c b/arch/sparc64/kernel/visemul.c
index 84fedaa38aae..c3fd64706b53 100644
--- a/arch/sparc64/kernel/visemul.c
+++ b/arch/sparc64/kernel/visemul.c
@@ -128,9 +128,6 @@
/* 001001100 - Permute bytes as specified by GSR.MASK */
#define BSHUFFLE_OPF 0x04c
-#define VIS_OPCODE_MASK ((0x3 << 30) | (0x3f << 19))
-#define VIS_OPCODE_VAL ((0x2 << 30) | (0x36 << 19))
-
#define VIS_OPF_SHIFT 5
#define VIS_OPF_MASK (0x1ff << VIS_OPF_SHIFT)
@@ -810,9 +807,6 @@ int vis_emul(struct pt_regs *regs, unsigned int insn)
if (get_user(insn, (u32 __user *) pc))
return -EFAULT;
- if ((insn & VIS_OPCODE_MASK) != VIS_OPCODE_VAL)
- return -EINVAL;
-
opf = (insn & VIS_OPF_MASK) >> VIS_OPF_SHIFT;
switch (opf) {
default: