notaz.gp2x.de / pcsx_rearmed.git / blame
| Commit | Line | Data |
|---|---|---|
| 4a71579b PC |
1 | #include <lightning.h> |
| 2 | #include <stdio.h> | |
| 3 | ||
| 4 | jit_state_t *_jit; | |
| 5 | long top; | |
| 6 | long stk[1024]; | |
| 7 | ||
| 8 | int | |
| 9 | main(int argc, char *argv[]) | |
| 10 | { | |
| 11 | void *address; | |
| 12 | void (*call)(void*); | |
| 13 | jit_state_t *frame_jit, *tramp_jit; | |
| 14 | jit_node_t *arg, *done, *xfibs, *out, *ret1, *ret2; | |
| 15 | ||
| 16 | init_jit(argv[0]); | |
| 17 | _jit = frame_jit = jit_new_state(); | |
| 18 | jit_name("main"); | |
| 19 | jit_prolog(); | |
| 20 | jit_frame(64); | |
| 21 | ||
| 22 | arg = jit_arg(); | |
| 23 | jit_getarg(JIT_R1, arg); | |
| 24 | ||
| 25 | /* Initialize language stack */ | |
| 26 | jit_movi(JIT_R0, (jit_word_t)stk); | |
| 27 | jit_sti(&top, JIT_R0); | |
| 28 | ||
| 29 | /* return address */ | |
| 30 | done = jit_movi(JIT_R0, 0); | |
| 31 | /* argument */ | |
| 32 | jit_movi(JIT_V0, 32); | |
| 33 | /* jump to code */ | |
| 34 | jit_jmpr(JIT_R1); | |
| 35 | jit_patch(done); | |
| 36 | ||
| 37 | jit_prepare(); | |
| 38 | jit_pushargi((jit_word_t)"xfibs(%d) = %d\n"); | |
| 39 | jit_ellipsis(); | |
| 40 | jit_pushargi(32); | |
| 41 | jit_pushargr(JIT_V0); | |
| 42 | jit_finishi(printf); | |
| 43 | jit_ret(); | |
| 44 | jit_epilog(); | |
| 45 | call = jit_emit(); | |
| 46 | jit_clear_state(); | |
| 47 | ||
| 48 | #define SIZE sizeof(jit_word_t) | |
| 49 | _jit = tramp_jit = jit_new_state(); | |
| 50 | jit_name("xfibs"); | |
| 51 | xfibs = jit_label(); | |
| 52 | jit_prolog(); | |
| 53 | jit_tramp(64); | |
| 54 | out = jit_blti(JIT_V0, 2); | |
| 55 | jit_subi(JIT_V1, JIT_V0, 1); /* V1 = N-1 */ | |
| 56 | jit_subi(JIT_V2, JIT_V0, 2); /* V1 = N-2 */ | |
| 57 | ||
| 58 | /* save return address */ | |
| 59 | jit_ldi(JIT_R1, &top); | |
| 60 | jit_stxi(SIZE * 0, JIT_R1, JIT_R0); | |
| 61 | /* save operands */ | |
| 62 | jit_stxi(SIZE * 1, JIT_R1, JIT_V0); | |
| 63 | jit_stxi(SIZE * 2, JIT_R1, JIT_V1); | |
| 64 | jit_stxi(SIZE * 3, JIT_R1, JIT_V2); | |
| 65 | /* adjust "language" stack */ | |
| 66 | jit_addi(JIT_R1, JIT_R1, SIZE * 4); | |
| 67 | jit_sti(&top, JIT_R1); | |
| 68 | ||
| 69 | /* return address */ | |
| 70 | ret1 = jit_movi(JIT_R0, 0); | |
| 71 | /* argument */ | |
| 72 | jit_movr(JIT_V0, JIT_V1); | |
| 73 | /* indirect goto */ | |
| 74 | jit_patch_at(jit_jmpi(), xfibs); | |
| 75 | jit_patch(ret1); | |
| 76 | jit_movr(JIT_V1, JIT_V0); /* V1 = rfibs(N-1) */ | |
| 77 | /* save V1 */ | |
| 78 | jit_ldi(JIT_R1, &top); | |
| 79 | jit_stxi(-SIZE * 2, JIT_R1, JIT_V1); | |
| 80 | ||
| 81 | /* reload V2 */ | |
| 82 | jit_ldxi(JIT_V2, JIT_R1, -SIZE * 1); | |
| 83 | ||
| 84 | /* return address */ | |
| 85 | ret2 = jit_movi(JIT_R0, 0); | |
| 86 | /* argument */ | |
| 87 | jit_movr(JIT_V0, JIT_V2); | |
| 88 | /* indirect goto */ | |
| 89 | jit_patch_at(jit_jmpi(), xfibs); | |
| 90 | jit_patch(ret2); | |
| 91 | jit_movr(JIT_V2, JIT_V0); /* V2 = rfibs(N-2) */ | |
| 92 | ||
| 93 | /* reload return address */ | |
| 94 | jit_ldi(JIT_R1, &top); | |
| 95 | jit_subi(JIT_R1, JIT_R1, SIZE * 4); | |
| 96 | jit_ldxi(JIT_R0, JIT_R1, SIZE * 0); | |
| 97 | /* reload operands */ | |
| 98 | jit_ldxi(JIT_V0, JIT_R1, SIZE * 1); | |
| 99 | jit_ldxi(JIT_V1, JIT_R1, SIZE * 2); | |
| 100 | /* V2 already loaded */ | |
| 101 | /* update "language" stack */ | |
| 102 | jit_sti(&top, JIT_R1); | |
| 103 | ||
| 104 | jit_addi(JIT_V1, JIT_V1, 1); | |
| 105 | jit_addr(JIT_V0, JIT_V1, JIT_V2); | |
| 106 | jit_jmpr(JIT_R0); | |
| 107 | ||
| 108 | jit_patch(out); | |
| 109 | jit_movi(JIT_V0, 1); | |
| 110 | jit_jmpr(JIT_R0); | |
| 111 | jit_epilog(); | |
| 112 | ||
| 113 | address = jit_emit(); | |
| 114 | jit_clear_state(); | |
| 115 | ||
| 116 | (*call)(address); | |
| 117 | ||
| 118 | jit_destroy_state(); | |
| 119 | ||
| 120 | _jit = frame_jit; | |
| 121 | jit_destroy_state(); | |
| 122 | return 0; | |
| 123 | } |