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| author |   David S. Miller <davem@sunset.davemloft.net> | 2006-11-19 14:38:25 -0800 |
|---|---|---|
| committer | David S. Miller <davem@sunset.davemloft.net> | 2006-12-10 02:39:32 -0800 |
| commit | 6e7726e16fb5e8f1169dbfcb75e321ac871af827 (patch) | |
| tree | 799f6f6a0041b63565b07f91b9cf95f986d97e15 /arch/sparc64 | |
| parent | [SPARC64]: Update defconfig. (diff) | |
| download | linux-dev-6e7726e16fb5e8f1169dbfcb75e321ac871af827.tar.xz linux-dev-6e7726e16fb5e8f1169dbfcb75e321ac871af827.zip | |
[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.c | 18 | ||||
| -rw-r--r-- | arch/sparc64/kernel/visemul.c | 6 |
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: |