feat add func call and rewrite codes

2025-03-07 12:29:53 +08:00
parent 09299e339c
commit 95bf44eb3f
37 changed files with 3369 additions and 1063 deletions
--- a/test_rv_vm/ripes-vm.c
+++ b/test_rv_vm/ripes-vm.c
@@ -0,0 +1,139 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <stdint.h>
+#include <string.h>
+
+struct MiniRV32IMAState;
+void ecall_handler(struct MiniRV32IMAState *state);
+#define ECALL_HANDLER(state) ecall_handler(state)
+#define MINIRV32WARN( x... ) printf( x );
+#define MINIRV32_DECORATE  static
+#define MINI_RV32_RAM_SIZE (32 * 1024 * 1024)
+#define MINIRV32_IMPLEMENTATION
+
+#define MINIRV32_RAM_IMAGE_OFFSET  0x0
+#include "mini-rv32ima.h"
+
+#define SYSCALL(num) (1025 + num)
+void ecall_handler(struct MiniRV32IMAState *state) {
+    uint32_t a0 = REG(10);
+    uint32_t a1 = REG(11);
+    switch (state->regs[17]) // x17 | a7
+    {
+    case 1:
+        // PrintInt
+        printf("%d", a0);
+        break;
+    case 4:
+        // PrintString
+        printf("%s", a0);
+        break;
+    case 10:
+        fprintf(stderr, "\nexit: %d\n", a0);
+        exit(a0);
+    case 93:
+        fprintf(stderr, "\nmain return code: %d\n", a0);
+        exit(a0);
+    case SYSCALL(0):
+        // getchar();
+        REGSET(10, getchar());
+    case SYSCALL(1):
+        // putchar
+        putchar(a0);
+
+    case SYSCALL(4):
+        // input int
+        scanf("%d", &a0);
+        REGSET(10, a0);
+        break;
+    case SYSCALL(5):
+        // input string
+        scanf("%s", a0);
+        REGSET(10, a0);
+        break;
+    default:
+        MINIRV32WARN("Unhandled ECALL: %d\n", state->regs[17]);
+        exit(1);
+        break;
+    }
+}
+
+int main(int argc, char *argv[]) {
+    // gcc -DDEFAULT_FILE='\"flat.bin\"' .\ripes-vm.c -o rv32-vm.exe
+    struct MiniRV32IMAState state;
+    uint8_t *image = (uint8_t *)malloc(MINI_RV32_RAM_SIZE);
+
+    // 初始化状态
+    memset(&state, 0, sizeof(state));
+    state.pc = 0; // 程序计数器从0开始
+    state.mstatus = 0x80000000; // 设置机器模式
+    state.mtvec = 0x1000;
+    state.mie = 0x7; // 启用所有中断
+
+    // 初始化内存
+    memset(image, 0, MINI_RV32_RAM_SIZE);
+
+    #ifndef DEFAULT_FILE
+    #define DEFAULT_FILE "../ccompiler/backend/test_rv.bin"
+    #endif
+    const char* filename = DEFAULT_FILE;
+    // 加载 flatbin 文件
+    if (argc == 2) {
+        filename = argv[1];
+    }
+    
+    FILE *file = fopen(filename, "rb");
+    if (!file) {
+        fprintf(stderr, "Usage: %s <flatbin_file>\n", argv[0]);
+        printf("Failed to open file %s\n", filename);
+        return 1;
+    }
+
+    fseek(file, 0, SEEK_END);
+    long flen = ftell(file);
+    fseek(file, 0, SEEK_SET);
+
+    if (flen > MINI_RV32_RAM_SIZE) {
+        fprintf(stderr, "Flatbin file is too large\n");
+        fclose(file);
+        return 1;
+    }
+
+    fread(image, flen, 1, file);
+    fclose(file);
+
+    // 运行模拟器
+    while (1) {
+        int32_t ret = MiniRV32IMAStep(&state, image, MINIRV32_RAM_IMAGE_OFFSET, 0, 1);
+        if (ret != 0) {
+            printf("Exception or interrupt occurred at PC: %d\n", state.pc);
+            return ret;
+        }
+    }
+
+    free(image);
+    return 0;
+}
+
+// static void DumpState( struct MiniRV32IMAState * core, uint8_t * ram_image )
+// {
+// 	uint32_t pc = core->pc;
+// 	uint32_t pc_offset = pc - MINIRV32_RAM_IMAGE_OFFSET;
+// 	uint32_t ir = 0;
+
+// 	printf( "PC: %08x ", pc );
+// 	if( pc_offset >= 0 && pc_offset < ram_amt - 3 )
+// 	{
+// 		ir = *((uint32_t*)(&((uint8_t*)ram_image)[pc_offset]));
+// 		printf( "[0x%08x] ", ir ); 
+// 	}
+// 	else
+// 		printf( "[xxxxxxxxxx] " ); 
+// 	uint32_t * regs = core->regs;
+// 	printf( "Z:%08x ra:%08x sp:%08x gp:%08x tp:%08x t0:%08x t1:%08x t2:%08x s0:%08x s1:%08x a0:%08x a1:%08x a2:%08x a3:%08x a4:%08x a5:%08x ",
+// 		regs[0], regs[1], regs[2], regs[3], regs[4], regs[5], regs[6], regs[7],
+// 		regs[8], regs[9], regs[10], regs[11], regs[12], regs[13], regs[14], regs[15] );
+// 	printf( "a6:%08x a7:%08x s2:%08x s3:%08x s4:%08x s5:%08x s6:%08x s7:%08x s8:%08x s9:%08x s10:%08x s11:%08x t3:%08x t4:%08x t5:%08x t6:%08x\n",
+// 		regs[16], regs[17], regs[18], regs[19], regs[20], regs[21], regs[22], regs[23],
+// 		regs[24], regs[25], regs[26], regs[27], regs[28], regs[29], regs[30], regs[31] );
+// }