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| author | Richard Henderson <rth@twiddle.net> | 2010-03-12 15:58:08 +0100 |
|---|---|---|
| committer | Aurelien Jarno <aurelien@aurel32.net> | 2010-04-08 11:11:21 +0200 |
| commit | f57040be4c5b5195cf820ce0e2acb15c2c4a1631 (patch) | |
| tree | 575d49bd8802dc101b3c98fda8481dd04cbe73b9 | |
| parent | af92284bec7ddbd76ddd105c40718627dda3407e (diff) | |
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>
| -rw-r--r-- | cpu-exec.c | 38 |
1 files changed, 31 insertions, 7 deletions
diff --git a/cpu-exec.c b/cpu-exec.c index 372aeac1a3..0f84857b1f 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 |