Archipelago » qemu

#include "config.h"

#ifdef TARGET_I386

#endif

#ifdef TARGET_ARM

#include "cpu-arm.h"

#endif

static void tb_reset_jump_recursive(TranslationBlock *tb);

static inline void tb_reset_jump_recursive2(TranslationBlock *tb, int n)

{

    TranslationBlock *tb1, *tb_next, **ptb;

    unsigned int n1;

    tb1 = tb->jmp_next[n];

    if (tb1 != NULL) {

        /* find head of list */

        for(;;) {

            n1 = (long)tb1 & 3;

            tb1 = (TranslationBlock *)((long)tb1 & ~3);

            if (n1 == 2)

                break;

            tb1 = tb1->jmp_next[n1];

        }

        /* we are now sure now that tb jumps to tb1 */

        tb_next = tb1;

        /* remove tb from the jmp_first list */

        ptb = &tb_next->jmp_first;

        for(;;) {

            tb1 = *ptb;

            n1 = (long)tb1 & 3;

            tb1 = (TranslationBlock *)((long)tb1 & ~3);

            if (n1 == n && tb1 == tb)

                break;

            ptb = &tb1->jmp_next[n1];

        }

        *ptb = tb->jmp_next[n];

        tb->jmp_next[n] = NULL;

        /* suppress the jump to next tb in generated code */

        tb_reset_jump(tb, n);

        /* suppress jumps in the tb on which we could have jump */

        tb_reset_jump_recursive(tb_next);

    }

}

static void tb_reset_jump_recursive(TranslationBlock *tb)

{

    tb_reset_jump_recursive2(tb, 0);

    tb_reset_jump_recursive2(tb, 1);

}

void cpu_interrupt(CPUState *env)

{

    TranslationBlock *tb;

    env->interrupt_request = 1;

    /* if the cpu is currently executing code, we must unlink it and

       all the potentially executing TB */

    tb = env->current_tb;

    if (tb) {

        tb_reset_jump_recursive(tb);

    }

}