target-arm: initial coprocessor register framework

[qemu.git] / target-arm / op_helper.c

diff --git a/target-arm/op_helper.c b/target-arm/op_helper.c
index 1892b35ecc2db3fc09a8ea5baac2355013c44567..490111c22f3bc6fff327aa28fe9f88d747ee8d0c 100644 (file)
--- a/target-arm/op_helper.c
+++ b/target-arm/op_helper.c
@@ -23,13 +23,11 @@
 #define SIGNBIT (uint32_t)0x80000000
 #define SIGNBIT64 ((uint64_t)1 << 63)
 
-#if !defined(CONFIG_USER_ONLY)
 static void raise_exception(int tt)
 {
     env->exception_index = tt;
     cpu_loop_exit(env);
 }
-#endif
 
 uint32_t HELPER(neon_tbl)(uint32_t ireg, uint32_t def,
                           uint32_t rn, uint32_t maxindex)
@@ -75,12 +73,11 @@ uint32_t HELPER(neon_tbl)(uint32_t ireg, uint32_t def,
    NULL, it means that the function was called in C code (i.e. not
    from generated code or from helper.c) */
 /* XXX: fix it to restore all registers */
-void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
-              void *retaddr)
+void tlb_fill(CPUARMState *env1, target_ulong addr, int is_write, int mmu_idx,
+              uintptr_t retaddr)
 {
     TranslationBlock *tb;
-    CPUState *saved_env;
-    unsigned long pc;
+    CPUARMState *saved_env;
     int ret;
 
     saved_env = env;
@@ -89,12 +86,11 @@ void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
     if (unlikely(ret)) {
         if (retaddr) {
             /* now we have a real cpu fault */
-            pc = (unsigned long)retaddr;
-            tb = tb_find_pc(pc);
+            tb = tb_find_pc(retaddr);
             if (tb) {
                 /* the PC is inside the translated code. It means that we have
                    a virtual CPU fault */
-                cpu_restore_state(tb, env, pc);
+                cpu_restore_state(tb, env, retaddr);
             }
         }
         raise_exception(env->exception_index);
@@ -103,7 +99,7 @@ void tlb_fill(CPUState *env1, target_ulong addr, int is_write, int mmu_idx,
 }
 #endif
 
-/* FIXME: Pass an axplicit pointer to QF to CPUState, and move saturating
+/* FIXME: Pass an axplicit pointer to QF to CPUARMState, and move saturating
    instructions into helper.c  */
 uint32_t HELPER(add_setq)(uint32_t a, uint32_t b)
 {
@@ -289,6 +285,46 @@ void HELPER(set_user_reg)(uint32_t regno, uint32_t val)
     }
 }
 
+void HELPER(set_cp_reg)(CPUARMState *env, void *rip, uint32_t value)
+{
+    const ARMCPRegInfo *ri = rip;
+    int excp = ri->writefn(env, ri, value);
+    if (excp) {
+        raise_exception(excp);
+    }
+}
+
+uint32_t HELPER(get_cp_reg)(CPUARMState *env, void *rip)
+{
+    const ARMCPRegInfo *ri = rip;
+    uint64_t value;
+    int excp = ri->readfn(env, ri, &value);
+    if (excp) {
+        raise_exception(excp);
+    }
+    return value;
+}
+
+void HELPER(set_cp_reg64)(CPUARMState *env, void *rip, uint64_t value)
+{
+    const ARMCPRegInfo *ri = rip;
+    int excp = ri->writefn(env, ri, value);
+    if (excp) {
+        raise_exception(excp);
+    }
+}
+
+uint64_t HELPER(get_cp_reg64)(CPUARMState *env, void *rip)
+{
+    const ARMCPRegInfo *ri = rip;
+    uint64_t value;
+    int excp = ri->readfn(env, ri, &value);
+    if (excp) {
+        raise_exception(excp);
+    }
+    return value;
+}
+
 /* ??? Flag setting arithmetic is awkward because we need to do comparisons.
    The only way to do that in TCG is a conditional branch, which clobbers
    all our temporaries.  For now implement these as helper functions.  */