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Integrate with TCC RISC-V Compiler in WebAssembly #3

Merged
merged 8 commits into from
Feb 12, 2024
Merged

Integrate with TCC RISC-V Compiler in WebAssembly #3

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9d7a708
Pass ELF Data
lupyuen Jan 30, 2024
7c06787
Pass ELF Data
lupyuen Jan 30, 2024
71ee7ea
Patch a.out is OK
lupyuen Jan 31, 2024
c2f2e5b
ELF Data tested OK
lupyuen Jan 31, 2024
704be7e
ELF Data tested OK
lupyuen Jan 31, 2024
b664995
ELF Data tested OK yay!
lupyuen Jan 31, 2024
139e62d
Add article
lupyuen Feb 4, 2024
1b02496
Merge branch 'main' into tcc
lupyuen Feb 12, 2024
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14 changes: 13 additions & 1 deletion jsemu.c
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Original file line number Diff line number Diff line change
Expand Up @@ -181,8 +181,20 @@ static void init_vm_fs(void *arg);
static void init_vm_drive(void *arg);

void vm_start(const char *url, int ram_size, const char *cmdline,
const char *pwd, int width, int height, BOOL has_network)
const char *pwd, int width, int height, BOOL has_network,
const char *drive_url, uint8_t *elf_data0, int elf_len0)
{
//// Begin Test: Patch the ELF Data to a.out in Initial RAM Disk
extern uint8_t elf_data[]; // From riscv_machine.c
extern int elf_len;
elf_len = elf_len0;

// Must copy ELF Data to Local Buffer because it will get overwritten
printf("elf_len=%d\n", elf_len);
if (elf_len > 4096) { puts("*** ERROR: elf_len exceeds 4096, increase elf_data and a.out size"); }
memcpy(elf_data, elf_data0, elf_len);
//// End Test

VMStartState *s;

s = mallocz(sizeof(*s));
Expand Down
94 changes: 94 additions & 0 deletions riscv_machine.c
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Open in desktop
Original file line number Diff line number Diff line change
Expand Up @@ -43,6 +43,80 @@
#define _info(...) {} ////
// #define _info printf ////

#ifdef NOTUSED
uint8_t elf_data2[] = { ////
0x7F, 0x45, 0x4C, 0x46, 0x02, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0xF3, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x04, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x09, 0x00, 0x08, 0x00,
0x13, 0x01, 0x01, 0xFA, 0x23, 0x3C, 0x11, 0x04, 0x23, 0x38, 0x81, 0x04, 0x13, 0x04, 0x01, 0x06,
0x13, 0x00, 0x00, 0x00, 0x23, 0x34, 0xA4, 0xFE, 0x23, 0x30, 0xB4, 0xFE, 0x1B, 0x05, 0xD0, 0x03,
0x23, 0x2E, 0xA4, 0xFC, 0x1B, 0x05, 0x10, 0x00, 0x23, 0x38, 0xA4, 0xFC, 0x17, 0x05, 0x00, 0x00,
0x13, 0x05, 0x05, 0x00, 0x23, 0x34, 0xA4, 0xFC, 0x1B, 0x05, 0xF0, 0x00, 0x23, 0x30, 0xA4, 0xFC,
0x03, 0x25, 0xC4, 0xFD, 0x13, 0x15, 0x05, 0x02, 0x13, 0x55, 0x05, 0x02, 0x23, 0x3C, 0xA4, 0xFA,
0x03, 0x35, 0x04, 0xFD, 0x23, 0x38, 0xA4, 0xFA, 0x03, 0x35, 0x84, 0xFC, 0x23, 0x34, 0xA4, 0xFA,
0x03, 0x35, 0x04, 0xFC, 0x23, 0x30, 0xA4, 0xFA, 0x13, 0x05, 0xD0, 0x03, 0x93, 0x05, 0x10, 0x00,
0x37, 0x06, 0x08, 0x00, 0x1B, 0x06, 0x16, 0x10, 0x13, 0x16, 0xC6, 0x00, 0x93, 0x06, 0xF0, 0x00,
0x73, 0x00, 0x00, 0x00, 0x01, 0x00, 0x6F, 0x00, 0x00, 0x00, 0x83, 0x30, 0x81, 0x05, 0x03, 0x34,
0x01, 0x05, 0x13, 0x01, 0x01, 0x06, 0x67, 0x80, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x48, 0x65, 0x6C, 0x6C, 0x6F, 0x2C, 0x20, 0x57, 0x6F, 0x72, 0x6C, 0x64, 0x21, 0x21, 0x0A, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x04, 0x00, 0xF1, 0xFF,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0E, 0x00, 0x00, 0x00, 0x01, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x00,
0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x09, 0x00, 0x00, 0x00, 0x12, 0x00, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x9A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x68, 0x65, 0x6C, 0x6C, 0x6F, 0x2E, 0x63, 0x00, 0x6D, 0x61, 0x69, 0x6E, 0x00, 0x4C, 0x2E,
0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x2C, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x17, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x18, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x2E, 0x74, 0x65, 0x78, 0x74, 0x00, 0x2E, 0x64, 0x61, 0x74, 0x61, 0x00, 0x2E, 0x64, 0x61,
0x74, 0x61, 0x2E, 0x72, 0x6F, 0x00, 0x2E, 0x62, 0x73, 0x73, 0x00, 0x2E, 0x73, 0x79, 0x6D, 0x74,
0x61, 0x62, 0x00, 0x2E, 0x73, 0x74, 0x72, 0x74, 0x61, 0x62, 0x00, 0x2E, 0x72, 0x65, 0x6C, 0x61,
0x2E, 0x74, 0x65, 0x78, 0x74, 0x00, 0x2E, 0x73, 0x68, 0x73, 0x74, 0x72, 0x74, 0x61, 0x62, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x9A, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x07, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x0D, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xE0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x10, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x16, 0x00, 0x00, 0x00, 0x08, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x1B, 0x00, 0x00, 0x00, 0x02, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xF0, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x78, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x06, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x23, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x70, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x12, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x2B, 0x00, 0x00, 0x00, 0x04, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x90, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x30, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x05, 0x00, 0x00, 0x00, 0x01, 0x00, 0x00, 0x00,
0x08, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x18, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x36, 0x00, 0x00, 0x00, 0x03, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x40, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
}; ////
const int elf_len2 = sizeof(elf_data2); //// TODO
#endif // NOTUSED

/* RISCV machine */

typedef struct RISCVMachine {
Expand Down Expand Up @@ -91,6 +165,8 @@ uint64_t rdtime_addr = 0;
uint64_t dcache_iall_addr = 0;
uint64_t sync_s_addr = 0;
uint64_t real_time = 0;
uint8_t elf_data[4096];
int elf_len = 0;

static uint64_t rtc_get_real_time(RISCVMachine *s)
{
Expand Down Expand Up @@ -955,6 +1031,24 @@ static void copy_bios(RISCVMachine *s, const uint8_t *buf, int buf_len,
printf("Patched SYNC.S (Ensure that all Cache Operations are completed) at %p\n", sync_s_addr);
}
}

// Patch the ELF Data to a.out in Initial RAM Disk
uint64_t elf_addr = 0;
printf("elf_len=%d\n", elf_len);
if (elf_len > 0) {
//// TODO: Fix the Image Size
for (int i = 0; i < 0xD61680; i++) {
const uint8_t pattern[] = { 0x22, 0x05, 0x69, 0x00 };
if (memcmp(&kernel_ptr[i], pattern, sizeof(pattern)) == 0) {
//// TODO: Catch overflow of a.out
memcpy(&kernel_ptr[i], elf_data, elf_len);
elf_addr = RAM_BASE_ADDR + i;
printf("Patched ELF Data to a.out at %p\n", elf_addr);
break;
}
}
if (elf_addr == 0) { puts("*** ERROR: Pattern for ELF Data a.out is missing"); }
}
//// End Test
}

Expand Down
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