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Annotation of qemu/target-lm32/op_helper.c, revision 1.1

1.1     ! root        1: #include <assert.h>
        !             2: #include "exec.h"
        !             3: #include "helper.h"
        !             4: #include "host-utils.h"
        !             5: 
        !             6: #include "hw/lm32_pic.h"
        !             7: #include "hw/lm32_juart.h"
        !             8: 
        !             9: #if !defined(CONFIG_USER_ONLY)
        !            10: #define MMUSUFFIX _mmu
        !            11: #define SHIFT 0
        !            12: #include "softmmu_template.h"
        !            13: #define SHIFT 1
        !            14: #include "softmmu_template.h"
        !            15: #define SHIFT 2
        !            16: #include "softmmu_template.h"
        !            17: #define SHIFT 3
        !            18: #include "softmmu_template.h"
        !            19: 
        !            20: void helper_raise_exception(uint32_t index)
        !            21: {
        !            22:     env->exception_index = index;
        !            23:     cpu_loop_exit(env);
        !            24: }
        !            25: 
        !            26: void helper_hlt(void)
        !            27: {
        !            28:     env->halted = 1;
        !            29:     env->exception_index = EXCP_HLT;
        !            30:     cpu_loop_exit(env);
        !            31: }
        !            32: 
        !            33: void helper_wcsr_im(uint32_t im)
        !            34: {
        !            35:     lm32_pic_set_im(env->pic_state, im);
        !            36: }
        !            37: 
        !            38: void helper_wcsr_ip(uint32_t im)
        !            39: {
        !            40:     lm32_pic_set_ip(env->pic_state, im);
        !            41: }
        !            42: 
        !            43: void helper_wcsr_jtx(uint32_t jtx)
        !            44: {
        !            45:     lm32_juart_set_jtx(env->juart_state, jtx);
        !            46: }
        !            47: 
        !            48: void helper_wcsr_jrx(uint32_t jrx)
        !            49: {
        !            50:     lm32_juart_set_jrx(env->juart_state, jrx);
        !            51: }
        !            52: 
        !            53: uint32_t helper_rcsr_im(void)
        !            54: {
        !            55:     return lm32_pic_get_im(env->pic_state);
        !            56: }
        !            57: 
        !            58: uint32_t helper_rcsr_ip(void)
        !            59: {
        !            60:     return lm32_pic_get_ip(env->pic_state);
        !            61: }
        !            62: 
        !            63: uint32_t helper_rcsr_jtx(void)
        !            64: {
        !            65:     return lm32_juart_get_jtx(env->juart_state);
        !            66: }
        !            67: 
        !            68: uint32_t helper_rcsr_jrx(void)
        !            69: {
        !            70:     return lm32_juart_get_jrx(env->juart_state);
        !            71: }
        !            72: 
        !            73: /* Try to fill the TLB and return an exception if error. If retaddr is
        !            74:    NULL, it means that the function was called in C code (i.e. not
        !            75:    from generated code or from helper.c) */
        !            76: /* XXX: fix it to restore all registers */
        !            77: void tlb_fill(target_ulong addr, int is_write, int mmu_idx, void *retaddr)
        !            78: {
        !            79:     TranslationBlock *tb;
        !            80:     CPUState *saved_env;
        !            81:     unsigned long pc;
        !            82:     int ret;
        !            83: 
        !            84:     /* XXX: hack to restore env in all cases, even if not called from
        !            85:        generated code */
        !            86:     saved_env = env;
        !            87:     env = cpu_single_env;
        !            88: 
        !            89:     ret = cpu_lm32_handle_mmu_fault(env, addr, is_write, mmu_idx, 1);
        !            90:     if (unlikely(ret)) {
        !            91:         if (retaddr) {
        !            92:             /* now we have a real cpu fault */
        !            93:             pc = (unsigned long)retaddr;
        !            94:             tb = tb_find_pc(pc);
        !            95:             if (tb) {
        !            96:                 /* the PC is inside the translated code. It means that we have
        !            97:                    a virtual CPU fault */
        !            98:                 cpu_restore_state(tb, env, pc);
        !            99:             }
        !           100:         }
        !           101:         cpu_loop_exit(env);
        !           102:     }
        !           103:     env = saved_env;
        !           104: }
        !           105: #endif
        !           106: 

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