linux-user/microblaze: Use force_sig_fault

Use the new function instead of setting up a target_siginfo_t
and calling queue_signal. Fill in the missing PC for SIGTRAP.

Reviewed-by: Peter Maydell <peter.maydell@linaro.org>
Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Message-Id: <20220107213243.212806-13-richard.henderson@linaro.org>
Signed-off-by: Laurent Vivier <laurent@vivier.eu>

linux-user/microblaze/cpu_loop.c

@@ -27,9 +27,8 @@
 void cpu_loop(CPUMBState *env)
 {
     CPUState *cs = env_cpu(env);
-    int trapnr, ret;
-    target_siginfo_t info;
-
+    int trapnr, ret, si_code;
+
     while (1) {
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
@@ -38,8 +37,8 @@ void cpu_loop(CPUMBState *env)
 
         switch (trapnr) {
         case EXCP_INTERRUPT:
-          /* just indicate that signals should be handled asap */
-          break;
+            /* just indicate that signals should be handled asap */
+            break;
         case EXCP_SYSCALL:
             /* Return address is 4 bytes after the call.  */
             env->regs[14] += 4;
@@ -67,49 +66,39 @@ void cpu_loop(CPUMBState *env)
              */
             env->regs[14] = env->pc;
             break;
+
         case EXCP_HW_EXCP:
             env->regs[17] = env->pc + 4;
             if (env->iflags & D_FLAG) {
                 env->esr |= 1 << 12;
                 env->pc -= 4;
                 /* FIXME: if branch was immed, replay the imm as well.  */
             }
-
             env->iflags &= ~(IMM_FLAG | D_FLAG);
-
             switch (env->esr & 31) {
-                case ESR_EC_DIVZERO:
-                    info.si_signo = TARGET_SIGFPE;
-                    info.si_errno = 0;
-                    info.si_code = TARGET_FPE_FLTDIV;
-                    info._sifields._sigfault._addr = 0;
-                    queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-                    break;
-                case ESR_EC_FPU:
-                    info.si_signo = TARGET_SIGFPE;
-                    info.si_errno = 0;
-                    if (env->fsr & FSR_IO) {
-                        info.si_code = TARGET_FPE_FLTINV;
-                    }
-                    if (env->fsr & FSR_DZ) {
-                        info.si_code = TARGET_FPE_FLTDIV;
-                    }
-                    info._sifields._sigfault._addr = 0;
-                    queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-                    break;
-                default:
-                    fprintf(stderr, "Unhandled hw-exception: 0x%x\n",
-                            env->esr & ESR_EC_MASK);
-                    cpu_dump_state(cs, stderr, 0);
-                    exit(EXIT_FAILURE);
-                    break;
+            case ESR_EC_DIVZERO:
+                si_code = TARGET_FPE_FLTDIV;
+                break;
+            case ESR_EC_FPU:
+                si_code = 0;
+                if (env->fsr & FSR_IO) {
+                    si_code = TARGET_FPE_FLTINV;
+                }
+                if (env->fsr & FSR_DZ) {
+                    si_code = TARGET_FPE_FLTDIV;
+                }
+                break;
+            default:
+                fprintf(stderr, "Unhandled hw-exception: 0x%x\n",
+                        env->esr & ESR_EC_MASK);
+                cpu_dump_state(cs, stderr, 0);
+                exit(EXIT_FAILURE);
             }
+            force_sig_fault(TARGET_SIGFPE, si_code, env->pc);
             break;
+
         case EXCP_DEBUG:
-            info.si_signo = TARGET_SIGTRAP;
-            info.si_errno = 0;
-            info.si_code = TARGET_TRAP_BRKPT;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            force_sig_fault(TARGET_SIGTRAP, TARGET_TRAP_BRKPT, env->pc);
             break;
         case EXCP_ATOMIC:
             cpu_exec_step_atomic(cs);