Merge remote-tracking branch 'remotes/rth/tags/pull-or-20170214' into staging

Queued openrisc patches

# gpg: Signature made Mon 13 Feb 2017 21:21:03 GMT
# gpg:                using RSA key 0xAD1270CC4DD0279B
# gpg: Good signature from "Richard Henderson <rth7680@gmail.com>"
# gpg:                 aka "Richard Henderson <rth@redhat.com>"
# gpg:                 aka "Richard Henderson <rth@twiddle.net>"
# Primary key fingerprint: 9CB1 8DDA F8E8 49AD 2AFC  16A4 AD12 70CC 4DD0 279B

* remotes/rth/tags/pull-or-20170214: (24 commits)
  target/openrisc: Optimize for r0 being zero
  target/openrisc: Tidy handling of delayed branches
  target/openrisc: Tidy ppc/npc implementation
  target/openrisc: Optimize l.jal to next
  target/openrisc: Fix madd
  target/openrisc: Implement muld, muldu, macu, msbu
  target/openrisc: Represent MACHI:MACLO as a single unit
  target/openrisc: Implement msync
  target/openrisc: Enable trap, csync, msync, psync for user mode
  target/openrisc: Set flags on helpers
  target/openrisc: Use movcond where appropriate
  target/openrisc: Keep SR_CY and SR_OV in a separate variables
  target/openrisc: Keep SR_F in a separate variable
  target/openrisc: Invert the decoding in dec_calc
  target/openrisc: Put SR[OVE] in TB flags
  target/openrisc: Streamline arithmetic and OVE
  target/openrisc: Rationalize immediate extraction
  target/openrisc: Tidy insn dumping
  target/openrisc: Implement lwa, swa
  target/openrisc: Fix exception handling status registers
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 42 insertions, 56 deletions

diff --git a/linux-user/main.c b/linux-user/main.c
index e588f58f2a..4fd49ce6b6 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -2574,52 +2574,17 @@ kuser_fail:
 void cpu_loop(CPUOpenRISCState *env)
 {
     CPUState *cs = CPU(openrisc_env_get_cpu(env));
-    int trapnr, gdbsig;
+    int trapnr;
     abi_long ret;
+    target_siginfo_t info;
 
     for (;;) {
         cpu_exec_start(cs);
         trapnr = cpu_exec(cs);
         cpu_exec_end(cs);
         process_queued_cpu_work(cs);
-        gdbsig = 0;
 
         switch (trapnr) {
-        case EXCP_RESET:
-            qemu_log_mask(CPU_LOG_INT, "\nReset request, exit, pc is %#x\n", env->pc);
-            exit(EXIT_FAILURE);
-            break;
-        case EXCP_BUSERR:
-            qemu_log_mask(CPU_LOG_INT, "\nBus error, exit, pc is %#x\n", env->pc);
-            gdbsig = TARGET_SIGBUS;
-            break;
-        case EXCP_DPF:
-        case EXCP_IPF:
-            cpu_dump_state(cs, stderr, fprintf, 0);
-            gdbsig = TARGET_SIGSEGV;
-            break;
-        case EXCP_TICK:
-            qemu_log_mask(CPU_LOG_INT, "\nTick time interrupt pc is %#x\n", env->pc);
-            break;
-        case EXCP_ALIGN:
-            qemu_log_mask(CPU_LOG_INT, "\nAlignment pc is %#x\n", env->pc);
-            gdbsig = TARGET_SIGBUS;
-            break;
-        case EXCP_ILLEGAL:
-            qemu_log_mask(CPU_LOG_INT, "\nIllegal instructionpc is %#x\n", env->pc);
-            gdbsig = TARGET_SIGILL;
-            break;
-        case EXCP_INT:
-            qemu_log_mask(CPU_LOG_INT, "\nExternal interruptpc is %#x\n", env->pc);
-            break;
-        case EXCP_DTLBMISS:
-        case EXCP_ITLBMISS:
-            qemu_log_mask(CPU_LOG_INT, "\nTLB miss\n");
-            break;
-        case EXCP_RANGE:
-            qemu_log_mask(CPU_LOG_INT, "\nRange\n");
-            gdbsig = TARGET_SIGSEGV;
-            break;
         case EXCP_SYSCALL:
             env->pc += 4;   /* 0xc00; */
             ret = do_syscall(env,
@@ -2636,32 +2601,54 @@ void cpu_loop(CPUOpenRISCState *env)
                 env->gpr[11] = ret;
             }
             break;
+        case EXCP_DPF:
+        case EXCP_IPF:
+        case EXCP_RANGE:
+            info.si_signo = TARGET_SIGSEGV;
+            info.si_errno = 0;
+            info.si_code = TARGET_SEGV_MAPERR;
+            info._sifields._sigfault._addr = env->pc;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case EXCP_ALIGN:
+            info.si_signo = TARGET_SIGBUS;
+            info.si_errno = 0;
+            info.si_code = TARGET_BUS_ADRALN;
+            info._sifields._sigfault._addr = env->pc;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+        case EXCP_ILLEGAL:
+            info.si_signo = TARGET_SIGILL;
+            info.si_errno = 0;
+            info.si_code = TARGET_ILL_ILLOPC;
+            info._sifields._sigfault._addr = env->pc;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
         case EXCP_FPE:
-            qemu_log_mask(CPU_LOG_INT, "\nFloating point error\n");
+            info.si_signo = TARGET_SIGFPE;
+            info.si_errno = 0;
+            info.si_code = 0;
+            info._sifields._sigfault._addr = env->pc;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
             break;
-        case EXCP_TRAP:
-            qemu_log_mask(CPU_LOG_INT, "\nTrap\n");
-            gdbsig = TARGET_SIGTRAP;
+        case EXCP_INTERRUPT:
+            /* We processed the pending cpu work above.  */
             break;
-        case EXCP_NR:
-            qemu_log_mask(CPU_LOG_INT, "\nNR\n");
+        case EXCP_DEBUG:
+            trapnr = gdb_handlesig(cs, TARGET_SIGTRAP);
+            if (trapnr) {
+                info.si_signo = trapnr;
+                info.si_errno = 0;
+                info.si_code = TARGET_TRAP_BRKPT;
+                queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            }
             break;
         case EXCP_ATOMIC:
             cpu_exec_step_atomic(cs);
             break;
         default:
-            EXCP_DUMP(env, "\nqemu: unhandled CPU exception %#x - aborting\n",
-                     trapnr);
-            gdbsig = TARGET_SIGILL;
-            break;
-        }
-        if (gdbsig) {
-            gdb_handlesig(cs, gdbsig);
-            if (gdbsig != TARGET_SIGTRAP) {
-                exit(EXIT_FAILURE);
-            }
+            g_assert_not_reached();
         }
-
         process_pending_signals(env);
     }
 }
@@ -4778,9 +4765,8 @@ int main(int argc, char **argv, char **envp)
         for (i = 0; i < 32; i++) {
             env->gpr[i] = regs->gpr[i];
         }
-
-        env->sr = regs->sr;
         env->pc = regs->pc;
+        cpu_set_sr(env, regs->sr);
     }
 #elif defined(TARGET_SH4)
     {