55 lines
1.0 KiB
C
55 lines
1.0 KiB
C
#include "qemu/osdep.h"
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#include "cpu.h"
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#include "exec/exec-all.h"
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#include "qemu/host-utils.h"
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#include "exec/helper-proto.h"
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#include "translate.h"
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void helper_raise_exception(CPUE2KState *env, int tt)
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{
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CPUState *cs = env_cpu(env);
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cs->exception_index = tt;
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cpu_loop_exit(cs);
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}
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void helper_call(CPUE2KState *env, uint64_t ctpr, uint64_t cond)
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{
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int tag = GET_FIELD(ctpr, CTPR_TAG_OFF, CTPR_TAG_END);
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if (!cond) {
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return;
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}
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if (tag == CTPR_TAG_SDISP) {
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CPUState *cs = env_cpu(env);
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cs->exception_index = E2K_EXCP_SYSCALL;
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cpu_loop_exit(cs);
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} else {
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/* TODO: call */
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abort();
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}
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}
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uint64_t helper_sxt(uint64_t x, uint64_t y)
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{
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int size;
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switch (x & 3) {
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case 0:
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size = 8;
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break;
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case 1:
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size = 16;
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break;
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default:
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size = 32;
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break;
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}
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if (x & 4) {
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return y & GEN_MASK(uint64_t, 0, size);
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} else {
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return (((int64_t) y) << (64 - size) >> (64 - size));
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}
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}
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