notaz.gp2x.de / pcsx_rearmed.git / blame
| Commit | Line | Data |
|---|---|---|
| 4a71579b PC |
1 | /* |
| 2 | * Simple test of using an alternate buffer for the code. | |
| 3 | */ | |
| 4 | ||
| 5 | #include <lightning.h> | |
| 6 | #include <stdio.h> | |
| 7 | #include <assert.h> | |
| 8 | #include <sys/mman.h> | |
| 9 | #if defined(__sgi) | |
| 10 | # include <fcntl.h> | |
| 11 | #endif | |
| 12 | ||
| 13 | #ifndef MAP_ANON | |
| 14 | # define MAP_ANON MAP_ANONYMOUS | |
| 15 | # ifndef MAP_ANONYMOUS | |
| 16 | # define MAP_ANONYMOUS 0 | |
| 17 | # endif | |
| 18 | #endif | |
| 19 | ||
| 20 | #if !defined(__sgi) | |
| 21 | #define mmap_fd -1 | |
| 22 | #endif | |
| 23 | ||
| 24 | jit_uint8_t *data; | |
| 25 | jit_state_t *_jit; | |
| 26 | jit_word_t data_length; | |
| 27 | jit_word_t note_length; | |
| 28 | #if defined(__sgi) | |
| 29 | int mmap_fd; | |
| 30 | #endif | |
| 31 | void (*function)(void); | |
| 32 | ||
| 33 | void | |
| 34 | gencode(jit_word_t flags) | |
| 35 | { | |
| 36 | jit_word_t offset; | |
| 37 | jit_word_t length; | |
| 38 | ||
| 39 | _jit = jit_new_state(); | |
| 40 | ||
| 41 | jit_name("main"); | |
| 42 | jit_prolog(); | |
| 43 | jit_prepare(); | |
| 44 | jit_pushargi((jit_word_t)"%f\n"); | |
| 45 | jit_ellipsis(); | |
| 46 | jit_pushargi_d(1.5); | |
| 47 | jit_finishi(printf); | |
| 48 | jit_note("nodata.c", __LINE__); | |
| 49 | ||
| 50 | /* call to jit_realize() is only required when using an alternate | |
| 51 | * code buffer. Note that not using mmap'ed memory may not work | |
| 52 | * on several ports and/or operating system versions */ | |
| 53 | jit_realize(); | |
| 54 | ||
| 55 | if (jit_get_data(&data_length, ¬e_length) != NULL) | |
| 56 | abort(); | |
| 57 | ||
| 58 | length = 0; | |
| 59 | if (!(flags & JIT_DISABLE_DATA)) | |
| 60 | length += data_length; | |
| 61 | if (!(flags & JIT_DISABLE_NOTE)) | |
| 62 | length += note_length; | |
| 63 | ||
| 64 | /* check that a too small buffer fails */ | |
| 65 | if (flags) | |
| 66 | jit_set_data(length ? data : NULL, length, flags); | |
| 67 | ||
| 68 | /* and calling again with enough space works */ | |
| 69 | offset = (length + 7) & -8; | |
| 70 | function = jit_emit(); | |
| 71 | if (function == NULL) | |
| 72 | abort(); | |
| 73 | ||
| 74 | jit_clear_state(); | |
| 75 | (*function)(); | |
| 76 | jit_destroy_state(); | |
| 77 | } | |
| 78 | ||
| 79 | int | |
| 80 | main(int argc, char *argv[]) | |
| 81 | { | |
| 82 | #if defined(__sgi) | |
| 83 | mmap_fd = open("/dev/zero", O_RDWR); | |
| 84 | #endif | |
| 85 | ||
| 86 | data = mmap(NULL, 4096, | |
| 87 | PROT_READ | PROT_WRITE, | |
| 88 | MAP_PRIVATE | MAP_ANON, mmap_fd, 0); | |
| 89 | assert(data != MAP_FAILED); | |
| 90 | #if defined(__sgi) | |
| 91 | close(mmap_fd); | |
| 92 | #endif | |
| 93 | ||
| 94 | init_jit(argv[0]); | |
| 95 | ||
| 96 | gencode(0); | |
| 97 | gencode(JIT_DISABLE_DATA); | |
| 98 | gencode(JIT_DISABLE_NOTE); | |
| 99 | gencode(JIT_DISABLE_DATA | JIT_DISABLE_NOTE); | |
| 100 | ||
| 101 | finish_jit(); | |
| 102 | ||
| 103 | munmap(data, 4096); | |
| 104 | ||
| 105 | return (0); | |
| 106 | } |