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target-tilegx: Decode ill pseudo-instructions

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Notice raise and bpt, decoding the constants embedded in the
nop addil instruction in the x0 slot.

[rth: Generalize TILEGX_EXCP_OPCODE_ILL to TILEGX_EXCP_SIGNAL.
Drop validation of signal values.]

Signed-off-by: Chen Gang <gang.chen.5i5j@gmail.com>
Message-Id: <1443243635-4886-1-git-send-email-gang.chen.5i5j@gmail.com>
Signed-off-by: Richard Henderson <rth@twiddle.net>
This commit is contained in:
Chen Gang 2015-09-26 13:00:35 +08:00 • committed by Richard Henderson
parent bf0f60a61b
commit dd8070d865
3 changed files with 85 additions and 15 deletions
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14
linux-user/main.c
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@ -3436,6 +3436,17 @@ static void gen_sigill_reg(CPUTLGState *env)
queue_signal(env, info.si_signo, &info);
}
static void do_signal(CPUTLGState *env)
{
target_siginfo_t info;
info.si_signo = env->signo;
info.si_errno = 0;
info.si_code = env->sigcode;
info._sifields._sigfault._addr = env->pc;
queue_signal(env, info.si_signo, &info);
}
static void set_regval(CPUTLGState *env, uint8_t reg, uint64_t val)
{
if (unlikely(reg >= TILEGX_R_COUNT)) {
@ -3622,6 +3633,9 @@ void cpu_loop(CPUTLGState *env)
case TILEGX_EXCP_OPCODE_FETCHOR4:
do_fetch(env, trapnr, false);
break;
case TILEGX_EXCP_SIGNAL:
do_signal(env);
break;
case TILEGX_EXCP_REG_IDN_ACCESS:
case TILEGX_EXCP_REG_UDN_ACCESS:
gen_sigill_reg(env);