[Qemu-ppc] [PATCH v3 03/24] target-ppc: Refactor PPC970

[Alexey Kardashevskiy]

This splits one init_proc_970() into a set of small helpers. Later
init_proc_970() will be generalized and will call different set of helpers
depending on the current CPU class.

Signed-off-by: Alexey Kardashevskiy <address@hidden>
---
 target-ppc/translate_init.c | 97 +++++++++++++++++++++++++++------------------
 1 file changed, 58 insertions(+), 39 deletions(-)

diff --git a/target-ppc/translate_init.c b/target-ppc/translate_init.c
index 6cd4cd9..302e61a 100644
--- a/target-ppc/translate_init.c
+++ b/target-ppc/translate_init.c
@@ -7277,48 +7277,70 @@ static int check_pow_970 (CPUPPCState *env)
     return 0;
 }
 
+static void gen_spr_970_hid(CPUPPCState *env)
+{
+    /* Hardware implementation registers */
+    /* XXX : not implemented */
+    spr_register(env, SPR_HID0, "HID0",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 &spr_read_generic, &spr_write_clear,
+                 0x60000000);
+    spr_register(env, SPR_HID1, "HID1",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 &spr_read_generic, &spr_write_generic,
+                 0x00000000);
+    spr_register(env, SPR_970_HID5, "HID5",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 &spr_read_generic, &spr_write_generic,
+                 POWERPC970_HID5_INIT);
+}
+
+static void gen_spr_970_hior(CPUPPCState *env)
+{
+    spr_register(env, SPR_HIOR, "SPR_HIOR",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 &spr_read_hior, &spr_write_hior,
+                 0x00000000);
+}
+
+static void gen_spr_970_ctrl(CPUPPCState *env)
+{
+    spr_register(env, SPR_CTRL, "SPR_CTRL",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 SPR_NOACCESS, &spr_write_generic,
+                 0x00000000);
+    spr_register(env, SPR_UCTRL, "SPR_UCTRL",
+                 SPR_NOACCESS, SPR_NOACCESS,
+                 &spr_read_generic, SPR_NOACCESS,
+                 0x00000000);
+}
+
+static void gen_spr_book3s_altivec(CPUPPCState *env)
+{
+    if (!(env->insns_flags & PPC_ALTIVEC)) {
+        return;
+    }
+
+    spr_register(env, SPR_VRSAVE, "SPR_VRSAVE",
+                 &spr_read_generic, &spr_write_generic,
+                 &spr_read_generic, &spr_write_generic,
+                 0x00000000);
+
+    /* Can't find information on what this should be on reset.  This
+     * value is the one used by 74xx processors. */
+    vscr_init(env, 0x00010000);
+}
+
 static void init_proc_970 (CPUPPCState *env)
 {
     gen_spr_ne_601(env);
     gen_spr_7xx(env);
-    /* Time base */
     gen_tbl(env);
-    /* Hardware implementation registers */
-    /* XXX : not implemented */
-    spr_register(env, SPR_HID0, "HID0",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_clear,
-                 0x60000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_HID1, "HID1",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
-    /* XXX : not implemented */
-    spr_register(env, SPR_970_HID5, "HID5",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, &spr_write_generic,
-                 POWERPC970_HID5_INIT);
-    /* Memory management */
-    /* XXX: not correct */
+    gen_spr_book3s_altivec(env);
+    gen_spr_970_hid(env);
+    gen_spr_970_hior(env);
     gen_low_BATs(env);
-    spr_register(env, SPR_HIOR, "SPR_HIOR",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_hior, &spr_write_hior,
-                 0x00000000);
-
-    spr_register(env, SPR_CTRL, "SPR_CTRL",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 SPR_NOACCESS, &spr_write_generic,
-                 0x00000000);
-    spr_register(env, SPR_UCTRL, "SPR_UCTRL",
-                 SPR_NOACCESS, SPR_NOACCESS,
-                 &spr_read_generic, SPR_NOACCESS,
-                 0x00000000);
-    spr_register(env, SPR_VRSAVE, "SPR_VRSAVE",
-                 &spr_read_generic, &spr_write_generic,
-                 &spr_read_generic, &spr_write_generic,
-                 0x00000000);
+    gen_spr_970_ctrl(env);
 #if !defined(CONFIG_USER_ONLY)
     env->slb_nr = 64;
 #endif
@@ -7327,9 +7349,6 @@ static void init_proc_970 (CPUPPCState *env)
     env->icache_line_size = 128;
     /* Allocate hardware IRQ controller */
     ppc970_irq_init(env);
-    /* Can't find information on what this should be on reset.  This
-     * value is the one used by 74xx processors. */
-    vscr_init(env, 0x00010000);
 }
 
 POWERPC_FAMILY(970)(ObjectClass *oc, void *data)
-- 
1.8.4.rc4