| 1 | #if __WORDSIZE == 32 |
| 2 | # define SIZE 4 |
| 3 | #else |
| 4 | # define SIZE 8 |
| 5 | #endif |
| 6 | .data 8192 |
| 7 | fmt: |
| 8 | .c "xfibs(%d) = %d\n" |
| 9 | /* Simulate a language specific stack */ |
| 10 | .align SIZE |
| 11 | top: |
| 12 | /* Top, or base of the stack */ |
| 13 | .size SIZE |
| 14 | stk: |
| 15 | .size 8160 |
| 16 | |
| 17 | .code |
| 18 | jmpi main |
| 19 | |
| 20 | /* Usually a trampoline is created before the code that uses it, but |
| 21 | * for testing purposes it is not required. |
| 22 | * In this test case, it would mean "main" would be converted in a |
| 23 | * different jit_state_t to native code, before xfibs was know. |
| 24 | */ |
| 25 | name xfibs |
| 26 | xfibs: |
| 27 | /* return address is in %r0 */ |
| 28 | /* argument and return value in %v0 */ |
| 29 | prolog |
| 30 | tramp 64 |
| 31 | blti_u out %v0 2 |
| 32 | subi %v1 %v0 1 /* V1 = N-1 */ |
| 33 | subi %v2 %v0 2 /* V1 = N-2 */ |
| 34 | |
| 35 | /* save return address */ |
| 36 | ldi %r1 top |
| 37 | stxi $(SIZE * 0) %r1 %r0 |
| 38 | /* save operands */ |
| 39 | stxi $(SIZE * 1) %r1 %v0 |
| 40 | stxi $(SIZE * 2) %r1 %v1 |
| 41 | stxi $(SIZE * 3) %r1 %v2 |
| 42 | /* adjust "language" stack */ |
| 43 | addi %r1 %r1 $(SIZE * 4) |
| 44 | sti top %r1 |
| 45 | |
| 46 | /* return address */ |
| 47 | movi %r0 ret1 |
| 48 | /* argument */ |
| 49 | movr %v0 %v1 |
| 50 | /* indirect goto */ |
| 51 | jmpi xfibs |
| 52 | ret1: |
| 53 | movr %v1 %v0 /* V1 = rfibs(N-1) */ |
| 54 | /* save V1 */ |
| 55 | ldi %r1 top |
| 56 | stxi $(-SIZE * 2) %r1 %v1 |
| 57 | |
| 58 | /* reload V2 */ |
| 59 | ldxi %v2 %r1 $(-SIZE * 1) |
| 60 | |
| 61 | /* return address */ |
| 62 | movi %r0 ret2 |
| 63 | /* argument */ |
| 64 | movr %v0 %v2 |
| 65 | /* indirect goto */ |
| 66 | jmpi xfibs |
| 67 | ret2: |
| 68 | movr %v2 %v0 /* V2 = rfibs(N-2) */ |
| 69 | |
| 70 | /* reload return address */ |
| 71 | ldi %r1 top |
| 72 | subi %r1 %r1 $(SIZE * 4) |
| 73 | ldxi %r0 %r1 $(SIZE * 0) |
| 74 | /* reload operands */ |
| 75 | ldxi %v0 %r1 $(SIZE * 1) |
| 76 | ldxi %v1 %r1 $(SIZE * 2) |
| 77 | /* V2 already loaded */ |
| 78 | /* update "language" stack */ |
| 79 | sti top %r1 |
| 80 | |
| 81 | addi %v1 %v1 1 |
| 82 | addr %v0 %v1 %v2 |
| 83 | jmpr %r0 |
| 84 | out: |
| 85 | movi %v0 1 |
| 86 | jmpr %r0 |
| 87 | epilog |
| 88 | |
| 89 | name main |
| 90 | main: |
| 91 | prolog |
| 92 | frame 64 |
| 93 | |
| 94 | /* Initialize language stack */ |
| 95 | movi %r0 stk |
| 96 | sti top %r0 |
| 97 | |
| 98 | /* return address */ |
| 99 | movi %r0 done |
| 100 | /* argument */ |
| 101 | movi %v0 32 |
| 102 | jmpi xfibs |
| 103 | done: |
| 104 | prepare |
| 105 | pushargi fmt |
| 106 | ellipsis |
| 107 | pushargi 32 |
| 108 | pushargr %v0 |
| 109 | finishi @printf |
| 110 | ret |
| 111 | epilog |