From 93ac68bca5a3332ffacd7bf10e7b9c4cfdab6374 Mon Sep 17 00:00:00 2001
From: bellard <bellard@c046a42c-6fe2-441c-8c8c-71466251a162>
Date: Tue, 30 Sep 2003 20:57:29 +0000
Subject: [PATCH] sparc emulation target (thanx to Thomas M. Ogrisegg)

git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@388 c046a42c-6fe2-441c-8c8c-71466251a162
---
 cpu-all.h         | 59 +++++++++++++++++++++++++++++++++++++++++++++++
 cpu-exec.c        | 28 +++++++++++++++-------
 disas.c           |  2 ++
 linux-user/main.c | 38 ++++++++++++++++++++++++++----
 4 files changed, 115 insertions(+), 12 deletions(-)

diff --git a/cpu-all.h b/cpu-all.h
index 65304927ee..43c03c96cf 100644
--- a/cpu-all.h
+++ b/cpu-all.h
@@ -188,6 +188,56 @@ static inline void stfq(void *ptr, double v)
 }
 #endif
 
+#elif defined(TARGET_WORDS_BIGENDIAN) && !defined(WORDS_BIGENDIAN)
+
+static inline int lduw(void *ptr)
+{
+    uint8_t *b = (uint8_t *) ptr;
+    return (b[0]<<8|b[1]);
+}
+
+static inline int ldsw(void *ptr)
+{
+    int8_t *b = (int8_t *) ptr;
+    return (b[0]<<8|b[1]);
+}
+
+static inline int ldl(void *ptr)
+{
+    uint8_t *b = (uint8_t *) ptr;
+    return (b[0]<<24|b[1]<<16|b[2]<<8|b[3]);
+}
+
+static inline uint64_t ldq(void *ptr)
+{
+    uint32_t a,b;
+    a = ldl (ptr);
+    b = ldl (ptr+4);
+    return (((uint64_t)a<<32)|b);
+}
+
+static inline void stw(void *ptr, int v)
+{
+    uint8_t *d = (uint8_t *) ptr;
+    d[0] = v >> 8;
+    d[1] = v;
+}
+
+static inline void stl(void *ptr, int v)
+{
+    uint8_t *d = (uint8_t *) ptr;
+    d[0] = v >> 24;
+    d[1] = v >> 16;
+    d[2] = v >> 8;
+    d[3] = v;
+}
+
+static inline void stq(void *ptr, uint64_t v)
+{
+    stl (ptr, v);
+    stl (ptr+4, v >> 32);
+}
+
 #else
 
 static inline int lduw(void *ptr)
@@ -297,6 +347,15 @@ void page_unprotect_range(uint8_t *data, unsigned long data_size);
 #define cpu_interrupt cpu_arm_interrupt
 #define cpu_signal_handler cpu_arm_signal_handler
 
+#elif defined(TARGET_SPARC)
+
+#define CPUState CPUSPARCState
+#define cpu_init cpu_sparc_init
+#define cpu_exec cpu_sparc_exec
+#define cpu_gen_code cpu_sparc_gen_code
+#define cpu_interrupt cpu_sparc_interrupt
+#define cpu_signal_handler cpu_sparc_signal_handler
+
 #else
 
 #error unsupported target CPU
diff --git a/cpu-exec.c b/cpu-exec.c
index 69671df861..035f104145 100644
--- a/cpu-exec.c
+++ b/cpu-exec.c
@@ -18,19 +18,13 @@
  * Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
  */
 #include "config.h"
-#ifdef TARGET_I386
-#include "exec-i386.h"
-#endif
-#ifdef TARGET_ARM
-#include "exec-arm.h"
-#endif
-
+#include "exec.h"
 #include "disas.h"
 
 //#define DEBUG_EXEC
 //#define DEBUG_SIGNAL
 
-#if defined(TARGET_ARM)
+#if defined(TARGET_ARM) || defined(TARGET_SPARC)
 /* XXX: unify with i386 target */
 void cpu_loop_exit(void)
 {
@@ -136,6 +130,7 @@ int cpu_exec(CPUState *env1)
         env->VF = (psr << 3) & 0x80000000;
         env->cpsr = psr & ~0xf0000000;
     }
+#elif defined(TARGET_SPARC)
 #else
 #error unsupported target CPU
 #endif
@@ -229,6 +224,8 @@ int cpu_exec(CPUState *env1)
                     env->cpsr = compute_cpsr();
                     cpu_arm_dump_state(env, logfile, 0);
                     env->cpsr &= ~0xf0000000;
+#elif defined(TARGET_SPARC)
+					cpu_sparc_dump_state (env, logfile, 0);
 #else
 #error unsupported target CPU 
 #endif
@@ -246,6 +243,14 @@ int cpu_exec(CPUState *env1)
                 flags = 0;
                 cs_base = 0;
                 pc = (uint8_t *)env->regs[15];
+#elif defined(TARGET_SPARC)
+				flags = 0;
+				cs_base = 0;
+				if (env->npc) {
+					env->pc = env->npc;
+					env->npc = 0;
+				}
+				pc = (uint8_t *) env->pc;
 #else
 #error unsupported CPU
 #endif
@@ -358,6 +363,7 @@ int cpu_exec(CPUState *env1)
 #endif
 #elif defined(TARGET_ARM)
     env->cpsr = compute_cpsr();
+#elif defined(TARGET_SPARC)
 #else
 #error unsupported target CPU
 #endif
@@ -488,6 +494,12 @@ static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
     /* XXX: do more */
     return 0;
 }
+#elif defined(TARGET_SPARC)
+static inline int handle_cpu_signal(unsigned long pc, unsigned long address,
+                                    int is_write, sigset_t *old_set)
+{
+	return 0;
+}
 #else
 #error unsupported target CPU
 #endif
diff --git a/disas.c b/disas.c
index 8a44e91477..81ba50a964 100644
--- a/disas.c
+++ b/disas.c
@@ -142,6 +142,8 @@ void disas(FILE *out, void *code, unsigned long size, int is_host, int flags)
 	print_insn = print_insn_i386;
 #elif defined(TARGET_ARM)
 	print_insn = print_insn_arm;
+#elif defined(TARGET_SPARC)
+	print_insn = print_insn_sparc;
 #else
 	fprintf(out, "Asm output not supported on this arch\n");
 	return;
diff --git a/linux-user/main.c b/linux-user/main.c
index f4c936c5bc..811b8bfba8 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -1,5 +1,5 @@
 /*
- *  qemu main
+ *  qemu user main
  * 
  *  Copyright (c) 2003 Fabrice Bellard
  *
@@ -38,7 +38,7 @@ static const char *interp_prefix = CONFIG_QEMU_PREFIX;
 const char interp[] __attribute__((section(".interp"))) = "/lib/ld-linux.so.2";
 #endif
 
-/* for recent libc, we add these dummies symbol which are not declared
+/* for recent libc, we add these dummy symbols which are not declared
    when generating a linked object (bug in ld ?) */
 #if __GLIBC__ > 2 || (__GLIBC__ == 2 && __GLIBC_MINOR__ >= 3)
 long __init_array_start[0];
@@ -299,10 +299,37 @@ void cpu_loop(CPUARMState *env)
 
 #endif
 
+#ifdef TARGET_SPARC
+
+void cpu_loop (CPUSPARCState *env)
+{
+	int trapnr;
+
+	while (1) {
+		trapnr = cpu_sparc_exec (env);
+
+		switch (trapnr) {
+		  case 0x8: case 0x10:
+			env->regwptr[0] = do_syscall (env, env->gregs[1],
+				env->regwptr[0], env->regwptr[1], env->regwptr[2],
+				env->regwptr[3], env->regwptr[4], env->regwptr[13]);
+			if (env->regwptr[0] >= 0xffffffe0)
+				env->psr |= PSR_CARRY;
+			break;
+		  default:
+			printf ("Invalid trap: %d\n", trapnr);
+			exit (1);
+		}
+		process_pending_signals (env);
+	}
+}
+
+#endif
+
 void usage(void)
 {
-    printf("qemu version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
-           "usage: qemu [-h] [-d] [-L path] [-s size] program [arguments...]\n"
+    printf("qemu-" TARGET_ARCH " version " QEMU_VERSION ", Copyright (c) 2003 Fabrice Bellard\n"
+           "usage: qemu-" TARGET_ARCH " [-h] [-d] [-L path] [-s size] program [arguments...]\n"
            "Linux CPU emulator (compiled for %s emulation)\n"
            "\n"
            "-h           print this help\n"
@@ -497,6 +524,9 @@ int main(int argc, char **argv)
         }
         env->cpsr = regs->uregs[16];
     }
+#elif defined(TARGET_SPARC)
+	env->pc = regs->u_regs[0];
+	env->regwptr[6] = regs->u_regs[1]-0x40;
 #else
 #error unsupported target CPU
 #endif