Mercurial > hg > CbC > CbC_gcc
annotate CbC-examples/c-next.c @ 144:8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
| author | Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp> |
|---|---|
| date | Sun, 23 Dec 2018 21:23:56 +0900 |
| parents | 76e1cf5455ef |
| children |
| rev | line source |
|---|---|
| 134 | 1 #define NEXT_OP(i) (i->op = *(MVMuint16 *)(i->cur_op), i->cur_op += 2, i->op) |
| 2 | |
| 3 typedef unsigned short MVMuint16; | |
| 4 typedef unsigned char MVMuint8; | |
| 5 typedef long* MVMRegister; | |
| 6 typedef void* MVMCompUnit; | |
| 7 typedef void* MVMCallsite; | |
| 8 | |
| 9 typedef struct MVMThreadContext { | |
| 10 MVMuint8 **interp_cur_op; | |
| 11 MVMuint8 **interp_bytecode_start; | |
| 12 MVMRegister **interp_reg_base; | |
| 13 MVMCompUnit **interp_cu; | |
| 14 } MVMThreadContext; | |
| 15 | |
| 135 | 16 |
| 134 | 17 typedef struct interp { |
| 18 MVMuint16 op; | |
| 19 /* Points to the place in the bytecode right after the current opcode. */ | |
| 20 /* See the NEXT_OP macro for making sense of this */ | |
| 21 MVMuint8 *cur_op; | |
| 22 | |
| 23 /* The current frame's bytecode start. */ | |
| 24 MVMuint8 *bytecode_start; | |
| 25 | |
| 26 /* Points to the base of the current register set for the frame we | |
| 143 | 27 * are presently in. */ |
| 134 | 28 MVMRegister *reg_base; |
| 29 | |
| 30 /* Points to the current compilation unit. */ | |
| 31 MVMCompUnit *cu; | |
| 32 | |
| 33 /* The current call site we're constructing. */ | |
| 34 MVMCallsite *cur_callsite; | |
| 35 | |
| 36 MVMThreadContext *tc; | |
| 37 | |
| 38 __code (*main_ret)(int, void*); | |
| 39 void *env; | |
| 40 | |
| 41 } INTER,*INTERP; | |
| 42 | |
| 135 | 43 __code cbc_no_op(INTERP); |
| 44 __code cbc_exit(INTERP); | |
| 139 | 45 __code cbc_next(INTERP); |
| 143 | 46 __code cbc_gc(INTERP); |
| 134 | 47 |
| 135 | 48 __code (* CODES[])(INTERP) = { |
| 134 | 49 cbc_no_op, |
| 50 cbc_no_op, | |
| 143 | 51 cbc_gc, |
| 134 | 52 cbc_exit, |
| 53 }; | |
| 54 | |
| 143 | 55 void gc(int * p, INTERP i){ |
| 56 i->reg_base = (MVMRegister *)p; | |
| 57 return; | |
| 58 } | |
| 59 | |
| 60 __code cbc_gc(INTERP i){ | |
| 61 int test = 3; | |
| 62 gc(&test,i); | |
| 63 goto cbc_next(i); | |
| 64 } | |
| 65 | |
| 134 | 66 __code cbc_next(INTERP i){ |
| 67 __code (*c)(INTERP); | |
| 68 c = CODES[NEXT_OP(i)]; | |
| 143 | 69 // c(i); |
| 134 | 70 goto c(i); |
| 71 } | |
| 72 | |
| 135 | 73 __code cbc_no_op(INTERP i){ |
| 74 goto cbc_next(i); | |
| 75 } | |
| 76 | |
| 77 __code cbc_exit(INTERP i){ | |
| 78 goto i->main_ret(0,i->env); | |
| 134 | 79 } |
| 80 | |
| 135 | 81 |
| 82 int interp_run(MVMThreadContext *tc){ | |
|
144
8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
parents:
143
diff
changeset
|
83 INTER inter = {0,0,0,0,0,0,0,0,0}; |
| 134 | 84 INTERP i = &inter; |
|
144
8f4e72ab4e11
fix segmentation fault caused by nothing next cur_op to end
Takahiro SHIMIZU <anatofuz@cr.ie.u-ryukyu.ac.jp>
parents:
143
diff
changeset
|
85 MVMuint16 cur_op[] = {0,1,1,0,1,2,3}; |
| 134 | 86 i->main_ret = _CbC_return; |
| 87 i->env = _CbC_environment; | |
| 139 | 88 i->cur_op = (MVMuint8 *)cur_op; |
| 134 | 89 |
| 90 tc->interp_cur_op = &i->cur_op; | |
| 91 tc->interp_bytecode_start = &i->bytecode_start; | |
| 92 tc->interp_reg_base = &i->reg_base; | |
| 93 tc->interp_cu = &i->cu; | |
| 94 goto cbc_next(i); | |
| 135 | 95 return 0; |
| 134 | 96 } |
| 135 | 97 |
| 98 int main(int argc, char **argv){ | |
| 99 MVMThreadContext tct = {0,0,0,0}; | |
| 100 MVMThreadContext* tc = &tct; | |
| 101 interp_run(tc); | |
| 102 } |