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authorj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-03-07 08:32:30 +0000
committerj_mayer <j_mayer@c046a42c-6fe2-441c-8c8c-71466251a162>2007-03-07 08:32:30 +0000
commit76a66253e5e48f1744f689041c1c21cedcaff630 (patch)
treec1003bd73ab8e2cbfe4a05c5b3f497bc2573fa4e /hw/ppc.c
parent1c7b3754f68382941a1921e578ead25d97d116fb (diff)
Great PowerPC emulation code resynchronisation and improvments:
- Add status file to make regression tracking easier - Move all micro-operations helpers definitions into a separate header: should never be seen outside of op.c - Update copyrights - Add new / missing PowerPC CPU definitions - Add definitions for PowerPC BookE - Add support for PowerPC 6xx/7xx software driven TLBs Allow use of PowerPC 603 as an example - Add preliminary code for POWER, POWER2, PowerPC 403, 405, 440, 601, 602 and BookE support - Avoid compiling priviledged only resources support for user-mode emulation - Remove unused helpers / micro-ops / dead code - Add instructions usage statistics dump: useful to figure which instructions need strong optimizations. - Micro-operation fixes: * add missing RETURN in some micro-ops * fix prototypes * use softfloat routines for all floating-point operations * fix tlbie instruction * move some huge micro-operations into helpers - emulation fixes: * fix inverted opcodes for fcmpo / fcmpu * condition register update is always to be done after the whole instruction has completed * add missing NIP updates when calling helpers that may generate an exception - optimizations and improvments: * optimize very often used instructions (li, mr, rlwixx...) * remove specific micro-ops for rarely used instructions * add routines for addresses computations to avoid bugs due to multiple different implementations * fix TB linking: do not reset T0 at the end of every TB. git-svn-id: svn://svn.savannah.nongnu.org/qemu/trunk@2473 c046a42c-6fe2-441c-8c8c-71466251a162
Diffstat (limited to 'hw/ppc.c')
-rw-r--r--hw/ppc.c91
1 files changed, 69 insertions, 22 deletions
diff --git a/hw/ppc.c b/hw/ppc.c
index b0865c1646..c910cb9f72 100644
--- a/hw/ppc.c
+++ b/hw/ppc.c
@@ -1,7 +1,7 @@
/*
* QEMU generic PPC hardware System Emulator
*
- * Copyright (c) 2003-2004 Jocelyn Mayer
+ * Copyright (c) 2003-2007 Jocelyn Mayer
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
@@ -41,7 +41,7 @@ static inline uint64_t cpu_ppc_get_tb (ppc_tb_t *tb_env)
{
/* TB time in tb periods */
return muldiv64(qemu_get_clock(vm_clock) + tb_env->tb_offset,
- tb_env->tb_freq, ticks_per_sec);
+ tb_env->tb_freq, ticks_per_sec);
}
uint32_t cpu_ppc_load_tbl (CPUState *env)
@@ -52,14 +52,14 @@ uint32_t cpu_ppc_load_tbl (CPUState *env)
tb = cpu_ppc_get_tb(tb_env);
#ifdef DEBUG_TB
{
- static int last_time;
- int now;
- now = time(NULL);
- if (last_time != now) {
- last_time = now;
- printf("%s: tb=0x%016lx %d %08lx\n",
- __func__, tb, now, tb_env->tb_offset);
- }
+ static int last_time;
+ int now;
+ now = time(NULL);
+ if (last_time != now) {
+ last_time = now;
+ printf("%s: tb=0x%016lx %d %08lx\n",
+ __func__, tb, now, tb_env->tb_offset);
+ }
}
#endif
@@ -75,6 +75,7 @@ uint32_t cpu_ppc_load_tbu (CPUState *env)
#ifdef DEBUG_TB
printf("%s: tb=0x%016lx\n", __func__, tb);
#endif
+
return tb >> 32;
}
@@ -117,6 +118,7 @@ uint32_t cpu_ppc_load_decr (CPUState *env)
#if defined(DEBUG_TB)
printf("%s: 0x%08x\n", __func__, decr);
#endif
+
return decr;
}
@@ -146,7 +148,7 @@ static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
if (is_excp)
next += tb_env->decr_next - now;
if (next == now)
- next++;
+ next++;
tb_env->decr_next = next;
/* Adjust timer */
qemu_mod_timer(tb_env->decr_timer, next);
@@ -154,7 +156,7 @@ static void _cpu_ppc_store_decr (CPUState *env, uint32_t decr,
* raise an exception.
*/
if ((value & 0x80000000) && !(decr & 0x80000000))
- cpu_ppc_decr_excp(env);
+ cpu_ppc_decr_excp(env);
}
void cpu_ppc_store_decr (CPUState *env, uint32_t value)
@@ -177,20 +179,64 @@ ppc_tb_t *cpu_ppc_tb_init (CPUState *env, uint32_t freq)
return NULL;
env->tb_env = tb_env;
if (tb_env->tb_freq == 0 || 1) {
- tb_env->tb_freq = freq;
- /* Create new timer */
- tb_env->decr_timer =
+ tb_env->tb_freq = freq;
+ /* Create new timer */
+ tb_env->decr_timer =
qemu_new_timer(vm_clock, &cpu_ppc_decr_cb, env);
- /* There is a bug in 2.4 kernels:
- * if a decrementer exception is pending when it enables msr_ee,
- * it's not ready to handle it...
- */
- _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
+ /* There is a bug in Linux 2.4 kernels:
+ * if a decrementer exception is pending when it enables msr_ee,
+ * it's not ready to handle it...
+ */
+ _cpu_ppc_store_decr(env, 0xFFFFFFFF, 0xFFFFFFFF, 0);
}
return tb_env;
}
+/* Specific helpers for POWER & PowerPC 601 RTC */
+ppc_tb_t *cpu_ppc601_rtc_init (CPUState *env)
+{
+ return cpu_ppc_tb_init(env, 7812500);
+}
+
+void cpu_ppc601_store_rtcu (CPUState *env, uint32_t value)
+__attribute__ (( alias ("cpu_ppc_store_tbu") ));
+
+uint32_t cpu_ppc601_load_rtcu (CPUState *env)
+__attribute__ (( alias ("cpu_ppc_load_tbu") ));
+
+void cpu_ppc601_store_rtcl (CPUState *env, uint32_t value)
+{
+ cpu_ppc_store_tbl(env, value & 0x3FFFFF80);
+}
+
+uint32_t cpu_ppc601_load_rtcl (CPUState *env)
+{
+ return cpu_ppc_load_tbl(env) & 0x3FFFFF80;
+}
+
+/* Embedded PowerPC timers */
+target_ulong load_40x_pit (CPUState *env)
+{
+ /* XXX: TODO */
+ return 0;
+}
+
+void store_40x_pit (CPUState *env, target_ulong val)
+{
+ /* XXX: TODO */
+}
+
+void store_booke_tcr (CPUState *env, target_ulong val)
+{
+ /* XXX: TODO */
+}
+
+void store_booke_tsr (CPUState *env, target_ulong val)
+{
+ /* XXX: TODO */
+}
+
#if 0
/*****************************************************************************/
/* Handle system reset (for now, just stop emulation) */
@@ -264,6 +310,7 @@ uint32_t NVRAM_get_lword (m48t59_t *nvram, uint32_t addr)
tmp |= m48t59_read(nvram, addr + 1) << 16;
tmp |= m48t59_read(nvram, addr + 2) << 8;
tmp |= m48t59_read(nvram, addr + 3);
+
return tmp;
}
@@ -316,10 +363,10 @@ uint16_t NVRAM_compute_crc (m48t59_t *nvram, uint32_t start, uint32_t count)
odd = count & 1;
count &= ~1;
for (i = 0; i != count; i++) {
- crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
+ crc = NVRAM_crc_update(crc, NVRAM_get_word(nvram, start + i));
}
if (odd) {
- crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
+ crc = NVRAM_crc_update(crc, NVRAM_get_byte(nvram, start + i) << 8);
}
return crc;