1 #include "sljitLir.h" 2 3 #include <stdio.h> 4 #include <stdlib.h> 5 6 typedef long SLJIT_CALL (*func3_t)(long a, long b, long c); 7 8 static int add3(long a, long b, long c) 9 { 10 void *code; 11 unsigned long len; 12 func3_t func; 13 14 /* Create a SLJIT compiler */ 15 struct sljit_compiler *C = sljit_create_compiler(); 16 17 /* Start a context(function entry), have 3 arguments, discuss later */ 18 sljit_emit_enter(C, 0, 3, 1, 3, 0, 0, 0); 19 20 /* The first arguments of function is register SLJIT_S0, 2nd, SLJIT_S1, etc. */ 21 /* R0 = first */ 22 sljit_emit_op1(C, SLJIT_MOV, SLJIT_R0, 0, SLJIT_S0, 0); 23 24 /* R0 = R0 + second */ 25 sljit_emit_op2(C, SLJIT_ADD, SLJIT_R0, 0, SLJIT_R0, 0, SLJIT_S1, 0); 26 27 /* R0 = R0 + third */ 28 sljit_emit_op2(C, SLJIT_ADD, SLJIT_R0, 0, SLJIT_R0, 0, SLJIT_S2, 0); 29 30 /* This statement mov R0 to RETURN REG and return */ 31 /* in fact, R0 is RETURN REG itself */ 32 sljit_emit_return(C, SLJIT_MOV, SLJIT_R0, 0); 33 34 /* Generate machine code */ 35 code = sljit_generate_code(C); 36 len = sljit_get_generated_code_size(C); 37 38 /* Execute code */ 39 func = (func3_t)code; 40 printf("func return %ld\n", func(a, b, c)); 41 42 /* dump_code(code, len); */ 43 44 /* Clean up */ 45 sljit_free_compiler(C); 46 sljit_free_code(code); 47 return 0; 48 } 49 50 int main() 51 { 52 return add3(4, 5, 6); 53 } 54