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#include <assert.h>
#include "cpu.h"
#include "exec/helper-proto.h"
#include "qemu/host-utils.h"
#include "hw/lm32/lm32_pic.h"
#include "hw/char/lm32_juart.h"
#include "exec/cpu_ldst.h"
#ifndef CONFIG_USER_ONLY
#include "sysemu/sysemu.h"
#endif
#if !defined(CONFIG_USER_ONLY)
void raise_exception(CPULM32State *env, int index)
{
CPUState *cs = CPU(lm32_env_get_cpu(env));
cs->exception_index = index;
cpu_loop_exit(cs);
}
void HELPER(raise_exception)(CPULM32State *env, uint32_t index)
{
raise_exception(env, index);
}
void HELPER(hlt)(CPULM32State *env)
{
CPUState *cs = CPU(lm32_env_get_cpu(env));
cs->halted = 1;
cs->exception_index = EXCP_HLT;
cpu_loop_exit(cs);
}
void HELPER(ill)(CPULM32State *env)
{
#ifndef CONFIG_USER_ONLY
CPUState *cs = CPU(lm32_env_get_cpu(env));
fprintf(stderr, "VM paused due to illegal instruction. "
"Connect a debugger or switch to the monitor console "
"to find out more.\n");
qemu_system_vmstop_request(RUN_STATE_PAUSED);
cs->halted = 1;
raise_exception(env, EXCP_HALTED);
#endif
}
void HELPER(wcsr_bp)(CPULM32State *env, uint32_t bp, uint32_t idx)
{
uint32_t addr = bp & ~1;
assert(idx < 4);
env->bp[idx] = bp;
lm32_breakpoint_remove(env, idx);
if (bp & 1) {
lm32_breakpoint_insert(env, idx, addr);
}
}
void HELPER(wcsr_wp)(CPULM32State *env, uint32_t wp, uint32_t idx)
{
lm32_wp_t wp_type;
assert(idx < 4);
env->wp[idx] = wp;
wp_type = lm32_wp_type(env->dc, idx);
lm32_watchpoint_remove(env, idx);
if (wp_type != LM32_WP_DISABLED) {
lm32_watchpoint_insert(env, idx, wp, wp_type);
}
}
void HELPER(wcsr_dc)(CPULM32State *env, uint32_t dc)
{
uint32_t old_dc;
int i;
lm32_wp_t old_type;
lm32_wp_t new_type;
old_dc = env->dc;
env->dc = dc;
for (i = 0; i < 4; i++) {
old_type = lm32_wp_type(old_dc, i);
new_type = lm32_wp_type(dc, i);
if (old_type != new_type) {
lm32_watchpoint_remove(env, i);
if (new_type != LM32_WP_DISABLED) {
lm32_watchpoint_insert(env, i, env->wp[i], new_type);
}
}
}
}
void HELPER(wcsr_im)(CPULM32State *env, uint32_t im)
{
lm32_pic_set_im(env->pic_state, im);
}
void HELPER(wcsr_ip)(CPULM32State *env, uint32_t im)
{
lm32_pic_set_ip(env->pic_state, im);
}
void HELPER(wcsr_jtx)(CPULM32State *env, uint32_t jtx)
{
lm32_juart_set_jtx(env->juart_state, jtx);
}
void HELPER(wcsr_jrx)(CPULM32State *env, uint32_t jrx)
{
lm32_juart_set_jrx(env->juart_state, jrx);
}
uint32_t HELPER(rcsr_im)(CPULM32State *env)
{
return lm32_pic_get_im(env->pic_state);
}
uint32_t HELPER(rcsr_ip)(CPULM32State *env)
{
return lm32_pic_get_ip(env->pic_state);
}
uint32_t HELPER(rcsr_jtx)(CPULM32State *env)
{
return lm32_juart_get_jtx(env->juart_state);
}
uint32_t HELPER(rcsr_jrx)(CPULM32State *env)
{
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)
*/
void tlb_fill(CPUState *cs, target_ulong addr, int is_write, int mmu_idx,
uintptr_t retaddr)
{
int ret;
ret = lm32_cpu_handle_mmu_fault(cs, addr, is_write, mmu_idx);
if (unlikely(ret)) {
if (retaddr) {
/* now we have a real cpu fault */
cpu_restore_state(cs, retaddr);
}
cpu_loop_exit(cs);
}
}
#endif
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