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Bugfix JAL, print enhance

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master
vhaudiquet 12 months ago
parent a62148255e
commit 66c89d8630
1 changed files with 3 additions and 3 deletions
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  1. 6
      src/cpu/rv32cpu.c

6
src/cpu/rv32cpu.c
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@ -71,7 +71,7 @@ static void cpu_decode(raw_instruction_t raw_instruction, instruction_t* output)
// Then following 10 bits (30-21) are immediate bits 10-1 // Then following 10 bits (30-21) are immediate bits 10-1
output->immediate |= (raw_instruction.data & 0x7FE00000) >> 20; output->immediate |= (raw_instruction.data & 0x7FE00000) >> 20;
// Following bit (20) is immediate bit 11 // Following bit (20) is immediate bit 11
output->immediate |= (raw_instruction.data & 0x200000) >> 9; output->immediate |= (raw_instruction.data & 0x100000) >> 9;
// Last bits (19-12) are immediate bits 19-12 // Last bits (19-12) are immediate bits 19-12
output->immediate |= (raw_instruction.data & 0xFF000); output->immediate |= (raw_instruction.data & 0xFF000);
break; break;
@ -722,7 +722,7 @@ static void cpu_print_instruction(instruction_t* instruction)
// Jump And Link // Jump And Link
// Sign extend immediate from 21 bits to 32 bits // Sign extend immediate from 21 bits to 32 bits
uint32_t immediate = (instruction->immediate & 0x1FFFFF) | (instruction->immediate & 0x100000 ? 0xFFE00000 : 0); uint32_t immediate = (instruction->immediate & 0x1FFFFF) | (instruction->immediate & 0x100000 ? 0xFFE00000 : 0);
printf("jal x%u, 0x%x\n", instruction->rd, immediate); printf("jal x%u, %d (=0x%x)\n", instruction->rd, immediate, immediate);
break; break;
} }
case OPCODE_JALR: case OPCODE_JALR:
@ -733,7 +733,7 @@ static void cpu_print_instruction(instruction_t* instruction)
if(immediate == 0x0 && instruction->rd == 0 && instruction->rs1 == 1) if(immediate == 0x0 && instruction->rd == 0 && instruction->rs1 == 1)
printf("ret\n"); printf("ret\n");
else else
printf("jalr x%u, x%u, 0x%x\n", instruction->rd, instruction->rs1, immediate); printf("jalr x%u, %d(x%u)\n", instruction->rd, immediate, instruction->rs1);
break; break;
} }
case OPCODE_BRANCH: case OPCODE_BRANCH:

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