notaz.gp2x.de / pcsx_rearmed.git / blame
| Commit | Line | Data |
|---|---|---|
| ba3814c1 PC |
1 | #include <lightning.h> |
| 2 | #include <pthread.h> | |
| 3 | #include <stdio.h> | |
| 4 | #include <unistd.h> | |
| 5 | #include <signal.h> | |
| 6 | ||
| 7 | void alarm_handler(int unused) | |
| 8 | { | |
| 9 | _exit(1); | |
| 10 | } | |
| 11 | ||
| 12 | int | |
| 13 | main(int argc, char *argv[]) | |
| 14 | { | |
| 15 | jit_state_t *_jit; | |
| 16 | void (*code)(void); | |
| 17 | jit_node_t *jmpi_main, *label; | |
| 18 | jit_node_t *func0, *func1, *func2, *func3; | |
| 19 | jit_node_t *patch0, *patch1, *patch2, *patch3; | |
| 20 | jit_word_t lock; | |
| 21 | pthread_t tids[4]; | |
| 22 | ||
| 23 | /* If there is any bug, do not hang in "make check" */ | |
| 24 | signal(SIGALRM, alarm_handler); | |
| 25 | alarm(5); | |
| 26 | ||
| 27 | init_jit(argv[0]); | |
| 28 | _jit = jit_new_state(); | |
| 29 | ||
| 30 | jmpi_main = jit_jmpi(); | |
| 31 | ||
| 32 | #define defun(name, line) \ | |
| 33 | jit_name(#name); \ | |
| 34 | jit_note("catomic.c", line); \ | |
| 35 | name = jit_label(); \ | |
| 36 | jit_prolog(); \ | |
| 37 | jit_movi(JIT_V0, (jit_word_t)&lock); \ | |
| 38 | jit_movi(JIT_R1, 0); \ | |
| 39 | jit_movi(JIT_R2, line); \ | |
| 40 | /* spin until get the lock */ \ | |
| 41 | label = jit_label(); \ | |
| 42 | jit_casr(JIT_R0, JIT_V0, JIT_R1, JIT_R2); \ | |
| 43 | jit_patch_at(jit_beqi(JIT_R0, 0), label); \ | |
| 44 | /* lock acquired */ \ | |
| 45 | jit_prepare(); \ | |
| 46 | /* pretend to be doing something useful for 0.01 usec | |
| 47 | * while holding the lock */ \ | |
| 48 | jit_pushargi(10000); \ | |
| 49 | jit_finishi(usleep); \ | |
| 50 | /* release lock */ \ | |
| 51 | jit_movi(JIT_R1, 0); \ | |
| 52 | jit_str(JIT_V0, JIT_R1); \ | |
| 53 | /* Now test casi */ \ | |
| 54 | jit_movi(JIT_R1, 0); \ | |
| 55 | jit_movi(JIT_R2, line); \ | |
| 56 | /* spin until get the lock */ \ | |
| 57 | label = jit_label(); \ | |
| 58 | jit_casi(JIT_R0, (jit_word_t)&lock, JIT_R1, JIT_R2); \ | |
| 59 | jit_patch_at(jit_beqi(JIT_R0, 0), label); \ | |
| 60 | /* lock acquired */ \ | |
| 61 | jit_prepare(); \ | |
| 62 | /* pretend to be doing something useful for 0.01 usec | |
| 63 | * while holding the lock */ \ | |
| 64 | jit_pushargi(10000); \ | |
| 65 | jit_finishi(usleep); \ | |
| 66 | jit_prepare(); \ | |
| 67 | /* for make check, just print "ok" */ \ | |
| 68 | jit_pushargi((jit_word_t)"ok"); \ | |
| 69 | /*jit_pushargi((jit_word_t)#name);*/ \ | |
| 70 | jit_finishi(puts); \ | |
| 71 | /* release lock */ \ | |
| 72 | jit_movi(JIT_R1, 0); \ | |
| 73 | jit_str(JIT_V0, JIT_R1); \ | |
| 74 | jit_ret(); \ | |
| 75 | jit_epilog(); | |
| 76 | defun(func0, __LINE__); | |
| 77 | defun(func1, __LINE__); | |
| 78 | defun(func2, __LINE__); | |
| 79 | defun(func3, __LINE__); | |
| 80 | ||
| 81 | jit_patch(jmpi_main); | |
| 82 | jit_name("main"); | |
| 83 | jit_note("catomic.c", __LINE__); | |
| 84 | jit_prolog(); | |
| 85 | ||
| 86 | #define start(tid) \ | |
| 87 | /* set JIT_R0 to thread function */ \ | |
| 88 | jit_patch_at(jit_movi(JIT_R0, 0), func##tid); \ | |
| 89 | jit_prepare(); \ | |
| 90 | /* pthread_t first argument */ \ | |
| 91 | jit_pushargi((jit_word_t)(tids + tid)); \ | |
| 92 | /* pthread_attr_t second argument */ \ | |
| 93 | jit_pushargi((jit_word_t)NULL); \ | |
| 94 | /* start routine third argument */ \ | |
| 95 | jit_pushargr(JIT_R0); \ | |
| 96 | /* argument to start routine fourth argument */ \ | |
| 97 | jit_pushargi((jit_word_t)NULL); \ | |
| 98 | /* start thread */ \ | |
| 99 | jit_finishi(pthread_create); | |
| 100 | /* spawn four threads */ | |
| 101 | start(0); | |
| 102 | start(1); | |
| 103 | start(2); | |
| 104 | start(3); | |
| 105 | ||
| 106 | #define join(tid) \ | |
| 107 | /* load pthread_t value in JIT_R0 */ \ | |
| 108 | jit_movi(JIT_R0, (jit_word_t)tids); \ | |
| 109 | jit_ldxi(JIT_R0, JIT_R0, tid * sizeof(pthread_t)); \ | |
| 110 | jit_prepare(); \ | |
| 111 | jit_pushargr(JIT_R0); \ | |
| 112 | jit_pushargi((jit_word_t)NULL); \ | |
| 113 | jit_finishi(pthread_join); | |
| 114 | /* wait for threads to finish */ | |
| 115 | join(0); | |
| 116 | join(1); | |
| 117 | join(2); | |
| 118 | join(3); | |
| 119 | ||
| 120 | jit_prepare(); | |
| 121 | jit_pushargi((jit_word_t)"ok"); | |
| 122 | jit_finishi(puts); | |
| 123 | ||
| 124 | jit_ret(); | |
| 125 | jit_epilog(); | |
| 126 | ||
| 127 | code = jit_emit(); | |
| 128 | ||
| 129 | #if 1 | |
| 130 | jit_disassemble(); | |
| 131 | #endif | |
| 132 | ||
| 133 | jit_clear_state(); | |
| 134 | ||
| 135 | /* let first thread acquire the lock */ | |
| 136 | lock = 0; | |
| 137 | ||
| 138 | (*code)(); | |
| 139 | jit_destroy_state(); | |
| 140 | ||
| 141 | finish_jit(); | |
| 142 | ||
| 143 | return (0); | |
| 144 | } |