aboutsummaryrefslogtreecommitdiff
path: root/cpu-exec.c
diff options
context:
space:
mode:
authorRichard Henderson <rth@twiddle.net>2010-03-12 15:58:08 +0100
committerAurelien Jarno <aurelien@aurel32.net>2010-04-08 11:11:21 +0200
commitf57040be4c5b5195cf820ce0e2acb15c2c4a1631 (patch)
tree575d49bd8802dc101b3c98fda8481dd04cbe73b9 /cpu-exec.c
parentaf92284bec7ddbd76ddd105c40718627dda3407e (diff)
downloadqemu-f57040be4c5b5195cf820ce0e2acb15c2c4a1631.zip
qemu-f57040be4c5b5195cf820ce0e2acb15c2c4a1631.tar.gz
qemu-f57040be4c5b5195cf820ce0e2acb15c2c4a1631.tar.bz2
tcg-hppa: Compute is_write in cpu_signal_handler.
Signed-off-by: Richard Henderson <rth@twiddle.net> Signed-off-by: Aurelien Jarno <aurelien@aurel32.net>
Diffstat (limited to 'cpu-exec.c')
-rw-r--r--cpu-exec.c38
1 files changed, 31 insertions, 7 deletions
diff --git a/cpu-exec.c b/cpu-exec.c
index 372aeac..0f84857 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -1197,15 +1197,39 @@ int cpu_signal_handler(int host_signum, void *pinfo,
{
struct siginfo *info = pinfo;
struct ucontext *uc = puc;
- unsigned long pc;
- int is_write;
+ unsigned long pc = uc->uc_mcontext.sc_iaoq[0];
+ uint32_t insn = *(uint32_t *)pc;
+ int is_write = 0;
+
+ /* XXX: need kernel patch to get write flag faster. */
+ switch (insn >> 26) {
+ case 0x1a: /* STW */
+ case 0x19: /* STH */
+ case 0x18: /* STB */
+ case 0x1b: /* STWM */
+ is_write = 1;
+ break;
+
+ case 0x09: /* CSTWX, FSTWX, FSTWS */
+ case 0x0b: /* CSTDX, FSTDX, FSTDS */
+ /* Distinguish from coprocessor load ... */
+ is_write = (insn >> 9) & 1;
+ break;
+
+ case 0x03:
+ switch ((insn >> 6) & 15) {
+ case 0xa: /* STWS */
+ case 0x9: /* STHS */
+ case 0x8: /* STBS */
+ case 0xe: /* STWAS */
+ case 0xc: /* STBYS */
+ is_write = 1;
+ }
+ break;
+ }
- pc = uc->uc_mcontext.sc_iaoq[0];
- /* FIXME: compute is_write */
- is_write = 0;
return handle_cpu_signal(pc, (unsigned long)info->si_addr,
- is_write,
- &uc->uc_sigmask, puc);
+ is_write, &uc->uc_sigmask, puc);
}
#else