Rename to do_tr_or_bp, as per the kernel function.
Add a 'trap' argument, akin to the kernel's si_code, but clearer.
The return value is always 0, so change the return value to void.
Use force_sig and force_sig_fault.
Signed-off-by: Richard Henderson <richard.hender...@linaro.org>
---
linux-user/mips/cpu_loop.c | 47 ++++++++++++++++++++++----------------
1 file changed, 27 insertions(+), 20 deletions(-)
diff --git a/linux-user/mips/cpu_loop.c b/linux-user/mips/cpu_loop.c
index 9d813ece4e..797b6bf659 100644
--- a/linux-user/mips/cpu_loop.c
+++ b/linux-user/mips/cpu_loop.c
@@ -21,6 +21,7 @@
#include "qemu-common.h"
#include "qemu.h"
#include "cpu_loop-common.h"
+#include "signal-common.h"
#include "elf.h"
#include "internal.h"
#include "fpu_helper.h"
@@ -38,29 +39,25 @@ enum {
BRK_DIVZERO = 7
};
-static int do_break(CPUMIPSState *env, target_siginfo_t *info,
- unsigned int code)
+static void do_tr_or_bp(CPUMIPSState *env, unsigned int code, bool trap)
{
- int ret = -1;
+ target_ulong pc = env->active_tc.PC;
switch (code) {
case BRK_OVERFLOW:
+ force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTOVF, pc);
+ break;
case BRK_DIVZERO:
- info->si_signo = TARGET_SIGFPE;
- info->si_errno = 0;
- info->si_code = (code == BRK_OVERFLOW) ? FPE_INTOVF : FPE_INTDIV;
- queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info);
- ret = 0;
+ force_sig_fault(TARGET_SIGFPE, TARGET_FPE_INTDIV, pc);
break;
default:
- info->si_signo = TARGET_SIGTRAP;
- info->si_errno = 0;
- queue_signal(env, info->si_signo, QEMU_SI_FAULT, &*info);
- ret = 0;
+ if (trap) {
+ force_sig(TARGET_SIGTRAP);
+ } else {
+ force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, pc);
+ }
break;
}
-
- return ret;
}
void cpu_loop(CPUMIPSState *env)
@@ -214,6 +211,13 @@ done_syscall:
abi_ulong trap_instr;
unsigned int code;
+ /*
+ * FIXME: It would be better to decode the trap number
+ * during translate, and store it in error_code while
+ * raising the exception. We should not be re-reading
+ * the opcode here.
+ */
+
if (env->hflags & MIPS_HFLAG_M16) {
if (env->insn_flags & ASE_MICROMIPS) {
/* microMIPS mode */
@@ -266,9 +270,7 @@ done_syscall:
}
}
- if (do_break(env, &info, code) != 0) {
- goto error;
- }
+ do_tr_or_bp(env, code, false);
}
break;
case EXCP_TRAP:
@@ -276,6 +278,13 @@ done_syscall:
abi_ulong trap_instr;
unsigned int code = 0;
+ /*
+ * FIXME: It would be better to decode the trap number
+ * during translate, and store it in error_code while
+ * raising the exception. We should not be re-reading
+ * the opcode here.
+ */
+
if (env->hflags & MIPS_HFLAG_M16) {
/* microMIPS mode */
abi_ulong instr[2];
@@ -302,9 +311,7 @@ done_syscall:
}
}
- if (do_break(env, &info, code) != 0) {
- goto error;
- }
+ do_tr_or_bp(env, code, true);
}
break;
case EXCP_ATOMIC:
--
2.25.1
