| #include "qemu/osdep.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"); |
| vm_stop(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 |
| |