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#include "mips.h"
int main()
{
mips_mem_h mem=mips_mem_create_ram(4096, 4);
mips_cpu_h cpu=mips_cpu_create(mem);
mips_error e=mips_cpu_set_debug_level(cpu, 4, stderr);
if(e!=mips_Success){
fprintf(stderr, "mips_cpu_set_debug_level : failed.\n");
exit(1);
}
mips_test_begin_suite();
int testId = mips_test_begin_test("addu");
// 1 - Setup an instruction in ram
// addu r3, r4, r5
uint32_t instr =
(0ul << 26) // opcode = 0
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(4ul << 21) // srca = r4
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(5ul << 16) // srcb = r5
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(3ul << 11) // dst = r3
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(0ul << 6) // shift = 0
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(0x21 << 0);
uint8_t buffer[4];
buffer[0]=(instr>>24)&0xFF;
buffer[1]=(instr>>16)&0xFF;
buffer[2]=(instr>>8)&0xFF;
buffer[3]=(instr>>0)&0xFF;
e=mips_mem_write(
mem, //!< Handle to target memory
0, //!< Byte address to start transaction at
4, //!< Number of bytes to transfer
buffer //!< Receives the target bytes
);
if(e!=mips_Success){
fprintf(stderr, "mips_mem_write : failed.\n");
exit(1);
}
// 2 - put register values in cpu
e=mips_cpu_set_register(cpu, 4, 40);
e=mips_cpu_set_register(cpu, 5, 50);
// 3 - step CPU
e=mips_cpu_step(cpu);
if(e!=mips_Success){
fprintf(stderr, "mips_cpu_step : failed.\n");
exit(1);
}
// 4 -Check the result
uint32_t got;
e=mips_cpu_get_register(cpu, 3, &got);
int passed = got == 40+50;
mips_test_end_test(testId, passed, "50 + 50 != 90");
testId = mips_test_begin_test("addu");
// 1 - Setup an instruction in ram
// addu r3, r4, r5
instr =
(0ul << 26) // opcode = 0
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(4ul << 21) // srca = r4
|
(5ul << 16) // srcb = r5
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(0ul << 11) // dst = r0
|
(0ul << 6) // shift = 0
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(0x21 << 0);
buffer[0]=(instr>>24)&0xFF;
buffer[1]=(instr>>16)&0xFF;
buffer[2]=(instr>>8)&0xFF;
buffer[3]=(instr>>0)&0xFF;
e=mips_mem_write(
mem, //!< Handle to target memory
0, //!< Byte address to start transaction at
4, //!< Number of bytes to transfer
buffer //!< Receives the target bytes
);
if(e!=mips_Success){
fprintf(stderr, "mips_mem_write : failed.\n");
exit(1);
}
// 2 - put register values in cpu
e=mips_cpu_set_register(cpu, 4, 40);
e=mips_cpu_set_register(cpu, 5, 50);
// 3 - step CPU
e=mips_cpu_step(cpu);
if(e!=mips_Success){
fprintf(stderr, "mips_cpu_step : failed.\n");
exit(1);
}
// 4 -Check the result
e=mips_cpu_get_register(cpu, 0, &got);
passed = got == 0;
mips_test_end_test(testId, passed, "r0 <> 0");
mips_test_end_suite();
return 0;
}
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