scc/libs/format/tests/test_scf_x64.c

/**
 * @file test_scf_x64.c
 * @brief SCF x64 architecture tests
 *
 * This test creates a simple x64 executable similar to the Rust example
 * provided by the user.
 */

#include <scf_impl.h>
#include <stdio.h>
#include <string.h>

int main() {
    printf("Testing SCF x64 format implementation...\n");

    // Test 1: Initialize SCF for x64 architecture
    scf_t scf;
    scf_init(&scf);

    // Set architecture to x64
    scf.header.arch = SCF_ARCH_X64;
    scf.header.flags = SCF_FLAG_EXE_RELOC;

    printf("Test 1 PASSED: x64 initialization successful\n");

    // Test 2: Add .text section with x64 machine code
    // x64 machine code for:
    //   sub rsp, 0x28
    //   lea rcx, [rip + data_offset]  ; will be relocated
    //   call [rip + printf_iat]       ; will be relocated
    //   add rsp, 0x28
    //   xor eax, eax
    //   ret
    unsigned char x64_code[] = {
        0x48, 0x83, 0xEC, 0x28, // sub rsp, 0x28
        0x48, 0x8D, 0x0D, 0x00, 0x00, 0x00,
        0x00, // lea rcx, [rip + 0] (to be relocated)
        0xFF, 0x15, 0x00, 0x00, 0x00, 0x00, // call [rip + 0] (to be relocated)
        0x48, 0x83, 0xC4, 0x28,             // add rsp, 0x28
        0x33, 0xC0,                         // xor eax, eax
        0xC3                                // ret
    };

    // Add code to .text section
    for (usize i = 0; i < sizeof(x64_code); i++) {
        scc_vec_push(scf.text, x64_code[i]);
    }
    scf.header.code_size = (scf_size_t)scf.text.size;

    printf("Test 2 PASSED: x64 code added to .text section\n");

    // Test 3: Add .data section with string
    const char hello_world[] = "Hello, World from SCF x64 Test!\n\0";
    for (usize i = 0; i < sizeof(hello_world); i++) {
        scc_vec_push(scf.data, hello_world[i]);
    }
    scf.header.data_size = (scf_size_t)scf.data.size;

    printf("Test 3 PASSED: Data string added to .data section\n");

    // Test 4: Add symbols
    scf_sym_t data_sym = {0};
    data_sym.name_offset = 0; // Would need string table for actual names
    data_sym.scf_sym_type = SCF_SYM_TYPE_DATA;
    data_sym.scf_sym_bind = SCF_SYM_BIND_GLOBAL;
    data_sym.scf_sym_vis = SCF_SYM_VIS_DEFAULT;
    data_sym.scf_sect_type = SCF_SECT_DATA;
    data_sym.scf_sect_offset = 0; // Start of data section
    data_sym.scf_sym_size = sizeof(hello_world);

    if (!scf_add_sym(&scf, &data_sym)) {
        printf("FAIL: Cannot add data symbol\n");
        return 1;
    }

    scf_sym_t code_sym = {0};
    code_sym.name_offset = 0;
    code_sym.scf_sym_type = SCF_SYM_TYPE_FUNC;
    code_sym.scf_sym_bind = SCF_SYM_BIND_GLOBAL;
    code_sym.scf_sym_vis = SCF_SYM_VIS_DEFAULT;
    code_sym.scf_sect_type = SCF_SECT_CODE;
    code_sym.scf_sect_offset = 0; // Start of code section
    code_sym.scf_sym_size = sizeof(x64_code);

    if (!scf_add_sym(&scf, &code_sym)) {
        printf("FAIL: Cannot add code symbol\n");
        return 1;
    }

    printf("Test 4 PASSED: Symbols added\n");

    // Test 5: Add relocations
    // First relocation: data reference at offset 7 in code (lea rcx, [rip +
    // data_offset])
    scf_reloc_t data_reloc = {0};
    data_reloc.offset = 7;          // Offset in code section
    data_reloc.sym_idx = 0;         // Index of data symbol (first symbol added)
    data_reloc.type = SCF_RELOC_PC; // PC-relative relocation
    data_reloc.sect_type = SCF_SECT_CODE;
    data_reloc.addend = -4; // RIP-relative addressing adjustment

    if (!scf_add_reloc(&scf, &data_reloc)) {
        printf("FAIL: Cannot add data relocation\n");
        return 1;
    }

    // Second relocation: external function reference at offset 13 in code (call
    // [rip + printf_iat])
    scf_reloc_t func_reloc = {0};
    func_reloc.offset = 13; // Offset in code section
    func_reloc.sym_idx =
        1; // Index of code symbol (would be external in real case)
    func_reloc.type = SCF_RELOC_PC; // PC-relative relocation
    func_reloc.sect_type = SCF_SECT_CODE;
    func_reloc.addend = -4; // RIP-relative addressing adjustment

    if (!scf_add_reloc(&scf, &func_reloc)) {
        printf("FAIL: Cannot add function relocation\n");
        return 1;
    }

    printf("Test 5 PASSED: Relocations added\n");

    // Test 6: Apply relocations
    if (!scf_apply_relocations(&scf)) {
        printf("FAIL: Cannot apply relocations\n");
        return 1;
    }

    printf("Test 6 PASSED: Relocations applied\n");

    // Test 7: Prepare for writing (internal整理)
    if (!scf_write_done(&scf)) {
        printf("FAIL: Cannot prepare for writing\n");
        return 1;
    }

    printf("Test 7 PASSED: Prepared for writing\n");

    // Test 8: Write to buffer
    char buffer[4096];
    if (!scf_write(&scf, buffer, sizeof(buffer))) {
        printf("FAIL: Cannot write to buffer\n");
        return 1;
    }

    printf("Test 8 PASSED: Written to buffer\n");

    // Test 9: Parse from buffer
    scf_t scf2;
    scf_init(&scf2);

    if (!scf_parse(&scf2, buffer, sizeof(buffer))) {
        printf("FAIL: Cannot parse from buffer\n");
        return 1;
    }

    // Verify architecture
    if (scf2.header.arch != SCF_ARCH_X64) {
        printf("FAIL: Architecture not preserved\n");
        return 1;
    }

    printf("Test 9 PASSED: Parsed from buffer, architecture preserved\n");

    // Test 10: Verify structure
    if (!scf_check_valid(&scf2)) {
        printf("FAIL: Parsed structure invalid\n");
        return 1;
    }

    printf("Test 10 PASSED: Parsed structure valid\n");

    printf("\nAll x64 tests passed!\n");
    printf("Created SCF file with:\n");
    printf("  Architecture: x64\n");
    printf("  Code size: %u bytes\n", scf.header.code_size);
    printf("  Data size: %u bytes\n", scf.header.data_size);
    printf("  Symbols: %u\n", scf.header.sym_count);
    printf("  Relocations: %u\n", scf.header.reloc_count);
    printf("  Flags: 0x%x\n", scf.header.flags);

    return 0;
}