[Qemu-devel] [PULL 37/42] linux-user: move s390x cpu loop to s390x directory

[Laurent Vivier <laurent@vivier.eu>]

No code change, only move code from main.c to
s390x/cpu_loop.c.

Signed-off-by: Laurent Vivier <laurent@vivier.eu>
Reviewed-by: Richard Henderson <richard.henderson@linaro.org>
Acked-by: Cornelia Huck <cohuck@redhat.com>
Reviewed-by: Philippe Mathieu-Daudé <f4bug@amsat.org>
Message-Id: <20180411185651.21351-16-laurent@vivier.eu>
---
 linux-user/main.c           | 146 --------------------------------------------
 linux-user/s390x/cpu_loop.c | 139 +++++++++++++++++++++++++++++++++++++++++
 2 files changed, 139 insertions(+), 146 deletions(-)

diff --git a/linux-user/main.c b/linux-user/main.c
index 37cf3a7d6f..7f6cfa5548 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -149,143 +149,6 @@ void fork_end(int child)
     }
 }
 
-#ifdef TARGET_S390X
-
-/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */
-#define S390X_FAIL_ADDR_MASK -4096LL
-
-void cpu_loop(CPUS390XState *env)
-{
-    CPUState *cs = CPU(s390_env_get_cpu(env));
-    int trapnr, n, sig;
-    target_siginfo_t info;
-    target_ulong addr;
-    abi_long ret;
-
-    while (1) {
-        cpu_exec_start(cs);
-        trapnr = cpu_exec(cs);
-        cpu_exec_end(cs);
-        process_queued_cpu_work(cs);
-
-        switch (trapnr) {
-        case EXCP_INTERRUPT:
-            /* Just indicate that signals should be handled asap.  */
-            break;
-
-        case EXCP_SVC:
-            n = env->int_svc_code;
-            if (!n) {
-                /* syscalls > 255 */
-                n = env->regs[1];
-            }
-            env->psw.addr += env->int_svc_ilen;
-            ret = do_syscall(env, n, env->regs[2], env->regs[3],
-                             env->regs[4], env->regs[5],
-                             env->regs[6], env->regs[7], 0, 0);
-            if (ret == -TARGET_ERESTARTSYS) {
-                env->psw.addr -= env->int_svc_ilen;
-            } else if (ret != -TARGET_QEMU_ESIGRETURN) {
-                env->regs[2] = ret;
-            }
-            break;
-
-        case EXCP_DEBUG:
-            sig = gdb_handlesig(cs, TARGET_SIGTRAP);
-            if (sig) {
-                n = TARGET_TRAP_BRKPT;
-                goto do_signal_pc;
-            }
-            break;
-        case EXCP_PGM:
-            n = env->int_pgm_code;
-            switch (n) {
-            case PGM_OPERATION:
-            case PGM_PRIVILEGED:
-                sig = TARGET_SIGILL;
-                n = TARGET_ILL_ILLOPC;
-                goto do_signal_pc;
-            case PGM_PROTECTION:
-            case PGM_ADDRESSING:
-                sig = TARGET_SIGSEGV;
-                /* XXX: check env->error_code */
-                n = TARGET_SEGV_MAPERR;
-                addr = env->__excp_addr & S390X_FAIL_ADDR_MASK;
-                goto do_signal;
-            case PGM_EXECUTE:
-            case PGM_SPECIFICATION:
-            case PGM_SPECIAL_OP:
-            case PGM_OPERAND:
-            do_sigill_opn:
-                sig = TARGET_SIGILL;
-                n = TARGET_ILL_ILLOPN;
-                goto do_signal_pc;
-
-            case PGM_FIXPT_OVERFLOW:
-                sig = TARGET_SIGFPE;
-                n = TARGET_FPE_INTOVF;
-                goto do_signal_pc;
-            case PGM_FIXPT_DIVIDE:
-                sig = TARGET_SIGFPE;
-                n = TARGET_FPE_INTDIV;
-                goto do_signal_pc;
-
-            case PGM_DATA:
-                n = (env->fpc >> 8) & 0xff;
-                if (n == 0xff) {
-                    /* compare-and-trap */
-                    goto do_sigill_opn;
-                } else {
-                    /* An IEEE exception, simulated or otherwise.  */
-                    if (n & 0x80) {
-                        n = TARGET_FPE_FLTINV;
-                    } else if (n & 0x40) {
-                        n = TARGET_FPE_FLTDIV;
-                    } else if (n & 0x20) {
-                        n = TARGET_FPE_FLTOVF;
-                    } else if (n & 0x10) {
-                        n = TARGET_FPE_FLTUND;
-                    } else if (n & 0x08) {
-                        n = TARGET_FPE_FLTRES;
-                    } else {
-                        /* ??? Quantum exception; BFP, DFP error.  */
-                        goto do_sigill_opn;
-                    }
-                    sig = TARGET_SIGFPE;
-                    goto do_signal_pc;
-                }
-
-            default:
-                fprintf(stderr, "Unhandled program exception: %#x\n", n);
-                cpu_dump_state(cs, stderr, fprintf, 0);
-                exit(EXIT_FAILURE);
-            }
-            break;
-
-        do_signal_pc:
-            addr = env->psw.addr;
-        do_signal:
-            info.si_signo = sig;
-            info.si_errno = 0;
-            info.si_code = n;
-            info._sifields._sigfault._addr = addr;
-            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
-            break;
-
-        case EXCP_ATOMIC:
-            cpu_exec_step_atomic(cs);
-            break;
-        default:
-            fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
-            cpu_dump_state(cs, stderr, fprintf, 0);
-            exit(EXIT_FAILURE);
-        }
-        process_pending_signals (env);
-    }
-}
-
-#endif /* TARGET_S390X */
-
 #ifdef TARGET_TILEGX
 
 static void gen_sigill_reg(CPUTLGState *env)
@@ -1720,15 +1583,6 @@ int main(int argc, char **argv, char **envp)
         env->pc = regs->sepc;
         env->gpr[xSP] = regs->sp;
     }
-#elif defined(TARGET_S390X)
-    {
-            int i;
-            for (i = 0; i < 16; i++) {
-                env->regs[i] = regs->gprs[i];
-            }
-            env->psw.mask = regs->psw.mask;
-            env->psw.addr = regs->psw.addr;
-    }
 #elif defined(TARGET_TILEGX)
     {
         int i;
diff --git a/linux-user/s390x/cpu_loop.c b/linux-user/s390x/cpu_loop.c
index b7700a5561..99f5f1594f 100644
--- a/linux-user/s390x/cpu_loop.c
+++ b/linux-user/s390x/cpu_loop.c
@@ -21,6 +21,145 @@
 #include "qemu.h"
 #include "cpu_loop-common.h"
 
+/* s390x masks the fault address it reports in si_addr for SIGSEGV and SIGBUS */
+#define S390X_FAIL_ADDR_MASK -4096LL
+
+void cpu_loop(CPUS390XState *env)
+{
+    CPUState *cs = CPU(s390_env_get_cpu(env));
+    int trapnr, n, sig;
+    target_siginfo_t info;
+    target_ulong addr;
+    abi_long ret;
+
+    while (1) {
+        cpu_exec_start(cs);
+        trapnr = cpu_exec(cs);
+        cpu_exec_end(cs);
+        process_queued_cpu_work(cs);
+
+        switch (trapnr) {
+        case EXCP_INTERRUPT:
+            /* Just indicate that signals should be handled asap.  */
+            break;
+
+        case EXCP_SVC:
+            n = env->int_svc_code;
+            if (!n) {
+                /* syscalls > 255 */
+                n = env->regs[1];
+            }
+            env->psw.addr += env->int_svc_ilen;
+            ret = do_syscall(env, n, env->regs[2], env->regs[3],
+                             env->regs[4], env->regs[5],
+                             env->regs[6], env->regs[7], 0, 0);
+            if (ret == -TARGET_ERESTARTSYS) {
+                env->psw.addr -= env->int_svc_ilen;
+            } else if (ret != -TARGET_QEMU_ESIGRETURN) {
+                env->regs[2] = ret;
+            }
+            break;
+
+        case EXCP_DEBUG:
+            sig = gdb_handlesig(cs, TARGET_SIGTRAP);
+            if (sig) {
+                n = TARGET_TRAP_BRKPT;
+                goto do_signal_pc;
+            }
+            break;
+        case EXCP_PGM:
+            n = env->int_pgm_code;
+            switch (n) {
+            case PGM_OPERATION:
+            case PGM_PRIVILEGED:
+                sig = TARGET_SIGILL;
+                n = TARGET_ILL_ILLOPC;
+                goto do_signal_pc;
+            case PGM_PROTECTION:
+            case PGM_ADDRESSING:
+                sig = TARGET_SIGSEGV;
+                /* XXX: check env->error_code */
+                n = TARGET_SEGV_MAPERR;
+                addr = env->__excp_addr & S390X_FAIL_ADDR_MASK;
+                goto do_signal;
+            case PGM_EXECUTE:
+            case PGM_SPECIFICATION:
+            case PGM_SPECIAL_OP:
+            case PGM_OPERAND:
+            do_sigill_opn:
+                sig = TARGET_SIGILL;
+                n = TARGET_ILL_ILLOPN;
+                goto do_signal_pc;
+
+            case PGM_FIXPT_OVERFLOW:
+                sig = TARGET_SIGFPE;
+                n = TARGET_FPE_INTOVF;
+                goto do_signal_pc;
+            case PGM_FIXPT_DIVIDE:
+                sig = TARGET_SIGFPE;
+                n = TARGET_FPE_INTDIV;
+                goto do_signal_pc;
+
+            case PGM_DATA:
+                n = (env->fpc >> 8) & 0xff;
+                if (n == 0xff) {
+                    /* compare-and-trap */
+                    goto do_sigill_opn;
+                } else {
+                    /* An IEEE exception, simulated or otherwise.  */
+                    if (n & 0x80) {
+                        n = TARGET_FPE_FLTINV;
+                    } else if (n & 0x40) {
+                        n = TARGET_FPE_FLTDIV;
+                    } else if (n & 0x20) {
+                        n = TARGET_FPE_FLTOVF;
+                    } else if (n & 0x10) {
+                        n = TARGET_FPE_FLTUND;
+                    } else if (n & 0x08) {
+                        n = TARGET_FPE_FLTRES;
+                    } else {
+                        /* ??? Quantum exception; BFP, DFP error.  */
+                        goto do_sigill_opn;
+                    }
+                    sig = TARGET_SIGFPE;
+                    goto do_signal_pc;
+                }
+
+            default:
+                fprintf(stderr, "Unhandled program exception: %#x\n", n);
+                cpu_dump_state(cs, stderr, fprintf, 0);
+                exit(EXIT_FAILURE);
+            }
+            break;
+
+        do_signal_pc:
+            addr = env->psw.addr;
+        do_signal:
+            info.si_signo = sig;
+            info.si_errno = 0;
+            info.si_code = n;
+            info._sifields._sigfault._addr = addr;
+            queue_signal(env, info.si_signo, QEMU_SI_FAULT, &info);
+            break;
+
+        case EXCP_ATOMIC:
+            cpu_exec_step_atomic(cs);
+            break;
+        default:
+            fprintf(stderr, "Unhandled trap: 0x%x\n", trapnr);
+            cpu_dump_state(cs, stderr, fprintf, 0);
+            exit(EXIT_FAILURE);
+        }
+        process_pending_signals (env);
+    }
+}
+
 void target_cpu_copy_regs(CPUArchState *env, struct target_pt_regs *regs)
 {
+    int i;
+    for (i = 0; i < 16; i++) {
+        env->regs[i] = regs->gprs[i];
+    }
+    env->psw.mask = regs->psw.mask;
+    env->psw.addr = regs->psw.addr;
 }
-- 
2.14.3