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target/m68k: Raise the TRAPn exception with the correct pc

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Rather than adjust the PC in all of the consumers, raise
the exception with the correct PC in the first place.

Reviewed-by: Laurent Vivier <laurent@vivier.eu>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220602013401.303699-2-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>
This commit is contained in:
Richard Henderson 2022-06-01 18:33:45 -07:00 • committed by Laurent Vivier
parent abc098351e
commit 79e1d527e1
3 changed files with 1 additions and 11 deletions
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1
linux-user/m68k/cpu_loop.c
View file

@ -56,7 +56,6 @@ void cpu_loop(CPUM68KState *env)
{ {
abi_long ret; abi_long ret;
n = env->dregs[0]; n = env->dregs[0];
env->pc += 2;
ret = do_syscall(env, ret = do_syscall(env,
n, n,
env->dregs[1], env->dregs[1],

9
target/m68k/op_helper.c
View file

@ -217,11 +217,6 @@ static void cf_interrupt_all(CPUM68KState *env, int is_hw)
cpu_loop_exit(cs); cpu_loop_exit(cs);
return; return;
} }
if (cs->exception_index >= EXCP_TRAP0
&& cs->exception_index <= EXCP_TRAP15) {
/* Move the PC after the trap instruction. */
retaddr += 2;
}
} }
vector = cs->exception_index << 2; vector = cs->exception_index << 2;
@ -304,10 +299,6 @@ static void m68k_interrupt_all(CPUM68KState *env, int is_hw)
/* Return from an exception. */ /* Return from an exception. */
m68k_rte(env); m68k_rte(env);
return; return;
case EXCP_TRAP0 ... EXCP_TRAP15:
/* Move the PC after the trap instruction. */
retaddr += 2;
break;
} }
} }

2
target/m68k/translate.c
View file

@ -4860,7 +4860,7 @@ DISAS_INSN(wdebug)
DISAS_INSN(trap) DISAS_INSN(trap)
{ {
gen_exception(s, s->base.pc_next, EXCP_TRAP0 + (insn & 0xf)); gen_exception(s, s->pc, EXCP_TRAP0 + (insn & 0xf));
} }
static void gen_load_fcr(DisasContext *s, TCGv res, int reg) static void gen_load_fcr(DisasContext *s, TCGv res, int reg)