143e8951e4
This patch adds translation helper functions. Signed-off-by: Michael Walle <michael@walle.cc> Signed-off-by: Edgar E. Iglesias <edgar.iglesias@gmail.com>
107 lines
2.2 KiB
C
107 lines
2.2 KiB
C
#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
|
|
|