sas2026/tinyriscv
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inixyz
2023-10-25 17:42:10 +03:00
parent 3f4f268d1f
commit f69eff9963
2 changed files with 17 additions and 0 deletions
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1
src/main.c
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@@ -4,6 +4,7 @@
#include <termios.h> #include <termios.h>
#include <unistd.h> #include <unistd.h>
#define TINYRISCV_M
#include "tinyriscv.h" #include "tinyriscv.h"
typedef enum{ typedef enum{

16
src/tinyriscv.h
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@@ -6,6 +6,7 @@
typedef uint8_t u8; typedef int8_t i8; typedef uint8_t u8; typedef int8_t i8;
typedef uint16_t u16; typedef int16_t i16; typedef uint16_t u16; typedef int16_t i16;
typedef uint32_t u32; typedef int32_t i32; typedef uint32_t u32; typedef int32_t i32;
typedef uint64_t u64; typedef int64_t i64;
typedef struct{ typedef struct{
u32 x[32], pc, mem_size; u32 x[32], pc, mem_size;
@@ -103,6 +104,21 @@ inline void tinyriscv_R_type(const u8 funct3, const u8 funct7, u32* x,
case /*SRA*/ 0x105: x[rd] = (i32)x[rs1] >> (x[rs2] & 0x1f); break; case /*SRA*/ 0x105: x[rd] = (i32)x[rs1] >> (x[rs2] & 0x1f); break;
case /*OR*/ 0x006: x[rd] = x[rs1] | x[rs2]; break; case /*OR*/ 0x006: x[rd] = x[rs1] | x[rs2]; break;
case /*AND*/ 0x007: x[rd] = x[rs1] & x[rs2]; break; case /*AND*/ 0x007: x[rd] = x[rs1] & x[rs2]; break;
#ifdef TINYRISCV_M
case /*MUL*/ 0x008: x[rd] = x[rs1] * x[rs2]; break;
case /*MULH*/ 0x009:
x[rd] = ((i64)(i32)x[rs1] * (i64)(i32)x[rs2]) >> 32;
break;
case /*MULHSU*/ 0x00a:
x[rd] = ((i64)(i32)x[rs1] * (u64)x[rs2]) >> 32;
break;
case /*MULHU*/ 0x00b: x[rd] = ((u64)x[rs1] * (u64)x[rs2]) >> 32; break;
case /*DIV*/ 0x00c: x[rd] = (i32)x[rs1] / (i32)x[rs2]; break;
case /*DIVU*/ 0x00d: x[rd] = x[rs1] / x[rs2]; break;
case /*REM*/ 0x00e: x[rd] = (i32)x[rs1] % (i32)x[rs2]; break;
case /*REMU*/ 0x00f: x[rd] = x[rs1] % x[rs2]; break;
#endif
} }
} }