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lm32: translation code helper

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This patch adds translation helper functions.

Signed-off-by: Michael Walle <michael@walle.cc>
Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
This commit is contained in:
Michael Walle 2011-02-17 23:45:04 +01:00 committed by Edgar E. Iglesias
parent 17c0fa3d57
commit 143e8951e4
2 changed files with 120 additions and 0 deletions
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14
target-lm32/helper.h Normal file
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#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)
#include "def-helper.h"

106
target-lm32/op_helper.c Normal file
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#include <assert.h>
#include "exec.h"
#include "helper.h"
#include "host-utils.h"
#include "hw/lm32_pic.h"
#include "hw/lm32_juart.h"
#if !defined(CONFIG_USER_ONLY)
#define MMUSUFFIX _mmu
#define SHIFT 0
#include "softmmu_template.h"
#define SHIFT 1
#include "softmmu_template.h"
#define SHIFT 2
#include "softmmu_template.h"
#define SHIFT 3
#include "softmmu_template.h"
void helper_raise_exception(uint32_t index)
{
env->exception_index = index;
cpu_loop_exit();
}
void helper_hlt(void)
{
env->halted = 1;
env->exception_index = EXCP_HLT;
cpu_loop_exit();
}
void helper_wcsr_im(uint32_t im)
{
lm32_pic_set_im(env->pic_state, im);
}
void helper_wcsr_ip(uint32_t im)
{
lm32_pic_set_ip(env->pic_state, im);
}
void helper_wcsr_jtx(uint32_t jtx)
{
lm32_juart_set_jtx(env->juart_state, jtx);
}
void helper_wcsr_jrx(uint32_t jrx)
{
lm32_juart_set_jrx(env->juart_state, jrx);
}
uint32_t helper_rcsr_im(void)
{
return lm32_pic_get_im(env->pic_state);
}
uint32_t helper_rcsr_ip(void)
{
return lm32_pic_get_ip(env->pic_state);
}
uint32_t helper_rcsr_jtx(void)
{
return lm32_juart_get_jtx(env->juart_state);
}
uint32_t helper_rcsr_jrx(void)
{
return lm32_juart_get_jrx(env->juart_state);
}
/* 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(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
{
TranslationBlock *tb;
CPUState *saved_env;
unsigned long pc;
int ret;
/* XXX: hack to restore env in all cases, even if not called from
generated code */
saved_env = env;
env = cpu_single_env;
ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
if (unlikely(ret)) {
if (retaddr) {
/* now we have a real cpu fault */
pc = (unsigned long)retaddr;
tb = tb_find_pc(pc);
if (tb) {
/* the PC is inside the translated code. It means that we have
a virtual CPU fault */
cpu_restore_state(tb, env, pc, NULL);
}
}
cpu_loop_exit();
}
env = saved_env;
}
#endif