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qemu/0027-target-lm32-switch-to-AREG0-free-mode.patch
Cole Robinson f375e62ad9 Update to qemu 1.2.2 stable 
Fix libvirt + seccomp combo (bz #855162)
Fix scsi hotplug crash (bz #879657)
Fix QOM refcount crash (bz #881486)
2012-12-16 18:27:22 -05:00

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From 25e9a95d0571c40738daa479467d757eb477739e Mon Sep 17 00:00:00 2001
From: Blue Swirl <blauwirbel@gmail.com>
Date: Sun, 2 Sep 2012 06:57:17 +0000
Subject: [PATCH] target-lm32: switch to AREG0 free mode
Add an explicit CPUState parameter instead of relying on AREG0
and switch to AREG0 free mode.
Signed-off-by: Blue Swirl <blauwirbel@gmail.com>
Signed-off-by: Michael Roth <mdroth@linux.vnet.ibm.com>
---
configure | 2 +-
target-lm32/Makefile.objs | 2 --
target-lm32/helper.h | 20 ++++++++++----------
target-lm32/op_helper.c | 29 +++++++++++------------------
target-lm32/translate.c | 28 +++++++++++++---------------
5 files changed, 35 insertions(+), 46 deletions(-)
diff --git a/configure b/configure
index 3ad6f74..1e3ea7f 100755
--- a/configure
+++ b/configure
@@ -3839,7 +3839,7 @@ symlink "$source_path/Makefile.target" "$target_dir/Makefile"
case "$target_arch2" in
- alpha | i386 | or32 | s390x | sparc* | x86_64 | xtensa* | ppc*)
+ alpha | i386 | lm32 | or32 | s390x | sparc* | x86_64 | xtensa* | ppc*)
echo "CONFIG_TCG_PASS_AREG0=y" >> $config_target_mak
;;
esac
diff --git a/target-lm32/Makefile.objs b/target-lm32/Makefile.objs
index 2e0e093..ca20f21 100644
--- a/target-lm32/Makefile.objs
+++ b/target-lm32/Makefile.objs
@@ -1,4 +1,2 @@
obj-y += translate.o op_helper.o helper.o cpu.o
obj-$(CONFIG_SOFTMMU) += machine.o
-
-$(obj)/op_helper.o: QEMU_CFLAGS += $(HELPER_CFLAGS)
diff --git a/target-lm32/helper.h b/target-lm32/helper.h
index 9d335ef..07f5670 100644
--- a/target-lm32/helper.h
+++ b/target-lm32/helper.h
@@ -1,14 +1,14 @@
#include "def-helper.h"
-DEF_HELPER_1(raise_exception, void, i32)
-DEF_HELPER_0(hlt, void)
-DEF_HELPER_1(wcsr_im, void, i32)
-DEF_HELPER_1(wcsr_ip, void, i32)
-DEF_HELPER_1(wcsr_jtx, void, i32)
-DEF_HELPER_1(wcsr_jrx, void, i32)
-DEF_HELPER_0(rcsr_im, i32)
-DEF_HELPER_0(rcsr_ip, i32)
-DEF_HELPER_0(rcsr_jtx, i32)
-DEF_HELPER_0(rcsr_jrx, i32)
+DEF_HELPER_2(raise_exception, void, env, i32)
+DEF_HELPER_1(hlt, void, env)
+DEF_HELPER_2(wcsr_im, void, env, i32)
+DEF_HELPER_2(wcsr_ip, void, env, i32)
+DEF_HELPER_2(wcsr_jtx, void, env, i32)
+DEF_HELPER_2(wcsr_jrx, void, env, i32)
+DEF_HELPER_1(rcsr_im, i32, env)
+DEF_HELPER_1(rcsr_ip, i32, env)
+DEF_HELPER_1(rcsr_jtx, i32, env)
+DEF_HELPER_1(rcsr_jrx, i32, env)
#include "def-helper.h"
diff --git a/target-lm32/op_helper.c b/target-lm32/op_helper.c
index 51edc1a..7b91d8c 100644
--- a/target-lm32/op_helper.c
+++ b/target-lm32/op_helper.c
@@ -1,6 +1,5 @@
#include <assert.h>
#include "cpu.h"
-#include "dyngen-exec.h"
#include "helper.h"
#include "host-utils.h"
@@ -18,55 +17,55 @@
#define SHIFT 3
#include "softmmu_template.h"
-void helper_raise_exception(uint32_t index)
+void helper_raise_exception(CPULM32State *env, uint32_t index)
{
env->exception_index = index;
cpu_loop_exit(env);
}
-void helper_hlt(void)
+void helper_hlt(CPULM32State *env)
{
env->halted = 1;
env->exception_index = EXCP_HLT;
cpu_loop_exit(env);
}
-void helper_wcsr_im(uint32_t im)
+void helper_wcsr_im(CPULM32State *env, uint32_t im)
{
lm32_pic_set_im(env->pic_state, im);
}
-void helper_wcsr_ip(uint32_t im)
+void helper_wcsr_ip(CPULM32State *env, uint32_t im)
{
lm32_pic_set_ip(env->pic_state, im);
}
-void helper_wcsr_jtx(uint32_t jtx)
+void helper_wcsr_jtx(CPULM32State *env, uint32_t jtx)
{
lm32_juart_set_jtx(env->juart_state, jtx);
}
-void helper_wcsr_jrx(uint32_t jrx)
+void helper_wcsr_jrx(CPULM32State *env, uint32_t jrx)
{
lm32_juart_set_jrx(env->juart_state, jrx);
}
-uint32_t helper_rcsr_im(void)
+uint32_t helper_rcsr_im(CPULM32State *env)
{
return lm32_pic_get_im(env->pic_state);
}
-uint32_t helper_rcsr_ip(void)
+uint32_t helper_rcsr_ip(CPULM32State *env)
{
return lm32_pic_get_ip(env->pic_state);
}
-uint32_t helper_rcsr_jtx(void)
+uint32_t helper_rcsr_jtx(CPULM32State *env)
{
return lm32_juart_get_jtx(env->juart_state);
}
-uint32_t helper_rcsr_jrx(void)
+uint32_t helper_rcsr_jrx(CPULM32State *env)
{
return lm32_juart_get_jrx(env->juart_state);
}
@@ -74,17 +73,12 @@ uint32_t helper_rcsr_jrx(void)
/* Try to fill the TLB and return an exception if error. If retaddr is
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(CPULM32State *env1, target_ulong addr, int is_write, int mmu_idx,
+void tlb_fill(CPULM32State *env, target_ulong addr, int is_write, int mmu_idx,
uintptr_t retaddr)
{
TranslationBlock *tb;
- CPULM32State *saved_env;
int ret;
- saved_env = env;
- env = env1;
-
ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx);
if (unlikely(ret)) {
if (retaddr) {
@@ -98,7 +92,6 @@ void tlb_fill(CPULM32State *env1, target_ulong addr, int is_write, int mmu_idx,
}
cpu_loop_exit(env);
}
- env = saved_env;
}
#endif
diff --git a/target-lm32/translate.c b/target-lm32/translate.c
index 872a2ba..5f6dcba 100644
--- a/target-lm32/translate.c
+++ b/target-lm32/translate.c
@@ -116,7 +116,7 @@ static inline void t_gen_raise_exception(DisasContext *dc, uint32_t index)
{
TCGv_i32 tmp = tcg_const_i32(index);
- gen_helper_raise_exception(tmp);
+ gen_helper_raise_exception(cpu_env, tmp);
tcg_temp_free_i32(tmp);
}
@@ -179,7 +179,7 @@ static void dec_and(DisasContext *dc)
} else {
if (dc->r0 == 0 && dc->r1 == 0 && dc->r2 == 0) {
tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
- gen_helper_hlt();
+ gen_helper_hlt(cpu_env);
} else {
tcg_gen_and_tl(cpu_R[dc->r2], cpu_R[dc->r0], cpu_R[dc->r1]);
}
@@ -601,10 +601,10 @@ static void dec_rcsr(DisasContext *dc)
tcg_gen_mov_tl(cpu_R[dc->r2], cpu_ie);
break;
case CSR_IM:
- gen_helper_rcsr_im(cpu_R[dc->r2]);
+ gen_helper_rcsr_im(cpu_R[dc->r2], cpu_env);
break;
case CSR_IP:
- gen_helper_rcsr_ip(cpu_R[dc->r2]);
+ gen_helper_rcsr_ip(cpu_R[dc->r2], cpu_env);
break;
case CSR_CC:
tcg_gen_mov_tl(cpu_R[dc->r2], cpu_cc);
@@ -622,10 +622,10 @@ static void dec_rcsr(DisasContext *dc)
tcg_gen_mov_tl(cpu_R[dc->r2], cpu_deba);
break;
case CSR_JTX:
- gen_helper_rcsr_jtx(cpu_R[dc->r2]);
+ gen_helper_rcsr_jtx(cpu_R[dc->r2], cpu_env);
break;
case CSR_JRX:
- gen_helper_rcsr_jrx(cpu_R[dc->r2]);
+ gen_helper_rcsr_jrx(cpu_R[dc->r2], cpu_env);
break;
case CSR_ICC:
case CSR_DCC:
@@ -812,7 +812,7 @@ static void dec_wcsr(DisasContext *dc)
if (use_icount) {
gen_io_start();
}
- gen_helper_wcsr_im(cpu_R[dc->r1]);
+ gen_helper_wcsr_im(cpu_env, cpu_R[dc->r1]);
tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
if (use_icount) {
gen_io_end();
@@ -824,7 +824,7 @@ static void dec_wcsr(DisasContext *dc)
if (use_icount) {
gen_io_start();
}
- gen_helper_wcsr_ip(cpu_R[dc->r1]);
+ gen_helper_wcsr_ip(cpu_env, cpu_R[dc->r1]);
tcg_gen_movi_tl(cpu_pc, dc->pc + 4);
if (use_icount) {
gen_io_end();
@@ -844,10 +844,10 @@ static void dec_wcsr(DisasContext *dc)
tcg_gen_mov_tl(cpu_deba, cpu_R[dc->r1]);
break;
case CSR_JTX:
- gen_helper_wcsr_jtx(cpu_R[dc->r1]);
+ gen_helper_wcsr_jtx(cpu_env, cpu_R[dc->r1]);
break;
case CSR_JRX:
- gen_helper_wcsr_jrx(cpu_R[dc->r1]);
+ gen_helper_wcsr_jrx(cpu_env, cpu_R[dc->r1]);
break;
case CSR_DC:
tcg_gen_mov_tl(cpu_dc, cpu_R[dc->r1]);
@@ -940,15 +940,13 @@ static const DecoderInfo decinfo[] = {
dec_cmpne
};
-static inline void decode(DisasContext *dc)
+static inline void decode(DisasContext *dc, uint32_t ir)
{
- uint32_t ir;
-
if (unlikely(qemu_loglevel_mask(CPU_LOG_TB_OP))) {
tcg_gen_debug_insn_start(dc->pc);
}
- dc->ir = ir = ldl_code(dc->pc);
+ dc->ir = ir;
LOG_DIS("%8.8x\t", dc->ir);
/* try guessing 'empty' instruction memory, although it may be a valid
@@ -1068,7 +1066,7 @@ static void gen_intermediate_code_internal(CPULM32State *env,
gen_io_start();
}
- decode(dc);
+ decode(dc, cpu_ldl_code(env, dc->pc));
dc->pc += 4;
num_insns++;
--
1.8.0.2
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