A lot has certainly happened!

1 files changed, 0 insertions, 403 deletions

diff --git a/tinycc/x86_64-link.c b/tinycc/x86_64-link.c
deleted file mode 100644
index 1b6aa09..0000000
--- a/tinycc/x86_64-link.c
+++ /dev/null
@@ -1,403 +0,0 @@
-#ifdef TARGET_DEFS_ONLY
-
-#define EM_TCC_TARGET EM_X86_64
-
-/* relocation type for 32 bit data relocation */
-#define R_DATA_32   R_X86_64_32S
-#define R_DATA_PTR  R_X86_64_64
-#define R_JMP_SLOT  R_X86_64_JUMP_SLOT
-#define R_GLOB_DAT  R_X86_64_GLOB_DAT
-#define R_COPY      R_X86_64_COPY
-#define R_RELATIVE  R_X86_64_RELATIVE
-
-#define R_NUM       R_X86_64_NUM
-
-#define ELF_START_ADDR 0x400000
-#define ELF_PAGE_SIZE  0x200000
-
-#define PCRELATIVE_DLLPLT 1
-#define RELOCATE_DLLPLT 1
-
-#else /* !TARGET_DEFS_ONLY */
-
-#include "tcc.h"
-
-#ifdef NEED_RELOC_TYPE
-/* Returns 1 for a code relocation, 0 for a data relocation. For unknown
-   relocations, returns -1. */
-int code_reloc (int reloc_type)
-{
-    switch (reloc_type) {
-        case R_X86_64_32:
-        case R_X86_64_32S:
-        case R_X86_64_64:
-        case R_X86_64_GOTPC32:
-        case R_X86_64_GOTPC64:
-        case R_X86_64_GOTPCREL:
-        case R_X86_64_GOTPCRELX:
-        case R_X86_64_REX_GOTPCRELX:
-        case R_X86_64_GOTTPOFF:
-        case R_X86_64_GOT32:
-        case R_X86_64_GOT64:
-        case R_X86_64_GLOB_DAT:
-        case R_X86_64_COPY:
-        case R_X86_64_RELATIVE:
-        case R_X86_64_GOTOFF64:
-        case R_X86_64_TLSGD:
-        case R_X86_64_TLSLD:
-        case R_X86_64_DTPOFF32:
-        case R_X86_64_TPOFF32:
-        case R_X86_64_DTPOFF64:
-        case R_X86_64_TPOFF64:
-            return 0;
-
-        case R_X86_64_PC32:
-        case R_X86_64_PC64:
-        case R_X86_64_PLT32:
-        case R_X86_64_PLTOFF64:
-        case R_X86_64_JUMP_SLOT:
-            return 1;
-    }
-    return -1;
-}
-
-/* Returns an enumerator to describe whether and when the relocation needs a
-   GOT and/or PLT entry to be created. See tcc.h for a description of the
-   different values. */
-int gotplt_entry_type (int reloc_type)
-{
-    switch (reloc_type) {
-        case R_X86_64_GLOB_DAT:
-        case R_X86_64_JUMP_SLOT:
-        case R_X86_64_COPY:
-        case R_X86_64_RELATIVE:
-            return NO_GOTPLT_ENTRY;
-
-	/* The following relocs wouldn't normally need GOT or PLT
-	   slots, but we need them for simplicity in the link
-	   editor part.  See our caller for comments.  */
-        case R_X86_64_32:
-        case R_X86_64_32S:
-        case R_X86_64_64:
-        case R_X86_64_PC32:
-        case R_X86_64_PC64:
-            return AUTO_GOTPLT_ENTRY;
-
-        case R_X86_64_GOTTPOFF:
-            return BUILD_GOT_ONLY;
-
-        case R_X86_64_GOT32:
-        case R_X86_64_GOT64:
-        case R_X86_64_GOTPC32:
-        case R_X86_64_GOTPC64:
-        case R_X86_64_GOTOFF64:
-        case R_X86_64_GOTPCREL:
-        case R_X86_64_GOTPCRELX:
-        case R_X86_64_TLSGD:
-        case R_X86_64_TLSLD:
-        case R_X86_64_DTPOFF32:
-        case R_X86_64_TPOFF32:
-        case R_X86_64_DTPOFF64:
-        case R_X86_64_TPOFF64:
-        case R_X86_64_REX_GOTPCRELX:
-        case R_X86_64_PLT32:
-        case R_X86_64_PLTOFF64:
-            return ALWAYS_GOTPLT_ENTRY;
-    }
-
-    return -1;
-}
-
-#ifdef NEED_BUILD_GOT
-ST_FUNC unsigned create_plt_entry(TCCState *s1, unsigned got_offset, struct sym_attr *attr)
-{
-    Section *plt = s1->plt;
-    uint8_t *p;
-    int modrm;
-    unsigned plt_offset, relofs;
-
-    modrm = 0x25;
-
-    /* empty PLT: create PLT0 entry that pushes the library identifier
-       (GOT + PTR_SIZE) and jumps to ld.so resolution routine
-       (GOT + 2 * PTR_SIZE) */
-    if (plt->data_offset == 0) {
-        p = section_ptr_add(plt, 16);
-        p[0] = 0xff; /* pushl got + PTR_SIZE */
-        p[1] = modrm + 0x10;
-        write32le(p + 2, PTR_SIZE);
-        p[6] = 0xff; /* jmp *(got + PTR_SIZE * 2) */
-        p[7] = modrm;
-        write32le(p + 8, PTR_SIZE * 2);
-    }
-    plt_offset = plt->data_offset;
-
-    /* The PLT slot refers to the relocation entry it needs via offset.
-       The reloc entry is created below, so its offset is the current
-       data_offset */
-    relofs = s1->plt->reloc ? s1->plt->reloc->data_offset : 0;
-
-    /* Jump to GOT entry where ld.so initially put the address of ip + 4 */
-    p = section_ptr_add(plt, 16);
-    p[0] = 0xff; /* jmp *(got + x) */
-    p[1] = modrm;
-    write32le(p + 2, got_offset);
-    p[6] = 0x68; /* push $xxx */
-    /* On x86-64, the relocation is referred to by _index_ */
-    write32le(p + 7, relofs / sizeof (ElfW_Rel) - 1);
-    p[11] = 0xe9; /* jmp plt_start */
-    write32le(p + 12, -(plt->data_offset));
-    return plt_offset;
-}
-
-/* relocate the PLT: compute addresses and offsets in the PLT now that final
-   address for PLT and GOT are known (see fill_program_header) */
-ST_FUNC void relocate_plt(TCCState *s1)
-{
-    uint8_t *p, *p_end;
-
-    if (!s1->plt)
-      return;
-
-    p = s1->plt->data;
-    p_end = p + s1->plt->data_offset;
-
-    if (p < p_end) {
-        int x = s1->got->sh_addr - s1->plt->sh_addr - 6;
-        add32le(p + 2, x);
-        add32le(p + 8, x - 6);
-        p += 16;
-        while (p < p_end) {
-            add32le(p + 2, x + (s1->plt->data - p));
-            p += 16;
-        }
-    }
-
-    if (s1->plt->reloc) {
-        ElfW_Rel *rel;
-        int x = s1->plt->sh_addr + 16 + 6;
-        p = s1->got->data;
-        for_each_elem(s1->plt->reloc, 0, rel, ElfW_Rel) {
-            write64le(p + rel->r_offset, x);
-            x += 16;
-        }
-    }
-}
-#endif
-#endif
-
-void relocate(TCCState *s1, ElfW_Rel *rel, int type, unsigned char *ptr, addr_t addr, addr_t val)
-{
-    int sym_index, esym_index;
-
-    sym_index = ELFW(R_SYM)(rel->r_info);
-
-    switch (type) {
-        case R_X86_64_64:
-            if (s1->output_type & TCC_OUTPUT_DYN) {
-                esym_index = get_sym_attr(s1, sym_index, 0)->dyn_index;
-                qrel->r_offset = rel->r_offset;
-                if (esym_index) {
-                    qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_64);
-                    qrel->r_addend = rel->r_addend;
-                    qrel++;
-                    break;
-                } else {
-                    qrel->r_info = ELFW(R_INFO)(0, R_X86_64_RELATIVE);
-                    qrel->r_addend = read64le(ptr) + val;
-                    qrel++;
-                }
-            }
-            add64le(ptr, val);
-            break;
-        case R_X86_64_32:
-        case R_X86_64_32S:
-            if (s1->output_type & TCC_OUTPUT_DYN) {
-                /* XXX: this logic may depend on TCC's codegen
-                   now TCC uses R_X86_64_32 even for a 64bit pointer */
-                qrel->r_offset = rel->r_offset;
-                qrel->r_info = ELFW(R_INFO)(0, R_X86_64_RELATIVE);
-                /* Use sign extension! */
-                qrel->r_addend = (int)read32le(ptr) + val;
-                qrel++;
-            }
-            add32le(ptr, val);
-            break;
-
-        case R_X86_64_PC32:
-            if (s1->output_type == TCC_OUTPUT_DLL) {
-                /* DLL relocation */
-                esym_index = get_sym_attr(s1, sym_index, 0)->dyn_index;
-                if (esym_index) {
-                    qrel->r_offset = rel->r_offset;
-                    qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_PC32);
-                    /* Use sign extension! */
-                    qrel->r_addend = (int)read32le(ptr) + rel->r_addend;
-                    qrel++;
-                    break;
-                }
-            }
-            goto plt32pc32;
-
-        case R_X86_64_PLT32:
-            /* fallthrough: val already holds the PLT slot address */
-
-        plt32pc32:
-        {
-            long long diff;
-            diff = (long long)val - addr;
-            if (diff < -2147483648LL || diff > 2147483647LL) {
-#ifdef TCC_TARGET_PE
-              /* ignore overflow with undefined weak symbols */
-              if (((ElfW(Sym)*)symtab_section->data)[sym_index].st_shndx != SHN_UNDEF)
-#endif
-                tcc_error_noabort("internal error: relocation failed");
-            }
-            add32le(ptr, diff);
-        }
-            break;
-
-        case R_X86_64_COPY:
-	    break;
-
-        case R_X86_64_PLTOFF64:
-            add64le(ptr, val - s1->got->sh_addr + rel->r_addend);
-            break;
-
-        case R_X86_64_PC64:
-            if (s1->output_type == TCC_OUTPUT_DLL) {
-                /* DLL relocation */
-                esym_index = get_sym_attr(s1, sym_index, 0)->dyn_index;
-                if (esym_index) {
-                    qrel->r_offset = rel->r_offset;
-                    qrel->r_info = ELFW(R_INFO)(esym_index, R_X86_64_PC64);
-                    qrel->r_addend = read64le(ptr) + rel->r_addend;
-                    qrel++;
-                    break;
-                }
-            }
-            add64le(ptr, val - addr);
-            break;
-
-        case R_X86_64_GLOB_DAT:
-        case R_X86_64_JUMP_SLOT:
-            /* They don't need addend */
-            write64le(ptr, val - rel->r_addend);
-            break;
-        case R_X86_64_GOTPCREL:
-        case R_X86_64_GOTPCRELX:
-        case R_X86_64_REX_GOTPCRELX:
-            add32le(ptr, s1->got->sh_addr - addr +
-                         get_sym_attr(s1, sym_index, 0)->got_offset - 4);
-            break;
-        case R_X86_64_GOTPC32:
-            add32le(ptr, s1->got->sh_addr - addr + rel->r_addend);
-            break;
-        case R_X86_64_GOTPC64:
-            add64le(ptr, s1->got->sh_addr - addr + rel->r_addend);
-            break;
-        case R_X86_64_GOTTPOFF:
-            add32le(ptr, val - s1->got->sh_addr);
-            break;
-        case R_X86_64_GOT32:
-            /* we load the got offset */
-            add32le(ptr, get_sym_attr(s1, sym_index, 0)->got_offset);
-            break;
-        case R_X86_64_GOT64:
-            /* we load the got offset */
-            add64le(ptr, get_sym_attr(s1, sym_index, 0)->got_offset);
-            break;
-        case R_X86_64_GOTOFF64:
-            add64le(ptr, val - s1->got->sh_addr);
-            break;
-        case R_X86_64_TLSGD:
-            {
-                static const unsigned char expect[] = {
-                    /* .byte 0x66; lea 0(%rip),%rdi */
-                    0x66, 0x48, 0x8d, 0x3d, 0x00, 0x00, 0x00, 0x00,
-                    /* .word 0x6666; rex64; call __tls_get_addr@PLT */
-                    0x66, 0x66, 0x48, 0xe8, 0x00, 0x00, 0x00, 0x00 };
-                static const unsigned char replace[] = {
-                    /* mov %fs:0,%rax */
-                    0x64, 0x48, 0x8b, 0x04, 0x25, 0x00, 0x00, 0x00, 0x00,
-                    /* lea -4(%rax),%rax */
-                    0x48, 0x8d, 0x80, 0x00, 0x00, 0x00, 0x00 };
-
-                if (memcmp (ptr-4, expect, sizeof(expect)) == 0) {
-                    ElfW(Sym) *sym;
-                    Section *sec;
-                    int32_t x;
-
-                    memcpy(ptr-4, replace, sizeof(replace));
-                    rel[1].r_info = ELFW(R_INFO)(0, R_X86_64_NONE);
-                    sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
-                    sec = s1->sections[sym->st_shndx];
-                    x = sym->st_value - sec->sh_addr - sec->data_offset;
-                    add32le(ptr + 8, x);
-                }
-                else
-                    tcc_error_noabort("unexpected R_X86_64_TLSGD pattern");
-            }
-            break;
-        case R_X86_64_TLSLD:
-            {
-                static const unsigned char expect[] = {
-                    /* lea 0(%rip),%rdi */
-                    0x48, 0x8d, 0x3d, 0x00, 0x00, 0x00, 0x00,
-                    /* call __tls_get_addr@PLT */
-                    0xe8, 0x00, 0x00, 0x00, 0x00 };
-                static const unsigned char replace[] = {
-                    /* data16 data16 data16 mov %fs:0,%rax */
-                    0x66, 0x66, 0x66, 0x64, 0x48, 0x8b, 0x04, 0x25,
-                    0x00, 0x00, 0x00, 0x00 };
-
-                if (memcmp (ptr-3, expect, sizeof(expect)) == 0) {
-                    memcpy(ptr-3, replace, sizeof(replace));
-                    rel[1].r_info = ELFW(R_INFO)(0, R_X86_64_NONE);
-                }
-                else
-                    tcc_error_noabort("unexpected R_X86_64_TLSLD pattern");
-            }
-            break;
-        case R_X86_64_DTPOFF32:
-        case R_X86_64_TPOFF32:
-            {
-                ElfW(Sym) *sym;
-                Section *sec;
-                int32_t x;
-
-                sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
-                sec = s1->sections[sym->st_shndx];
-                x = val - sec->sh_addr - sec->data_offset;
-                add32le(ptr, x);
-            }
-            break;
-        case R_X86_64_DTPOFF64:
-        case R_X86_64_TPOFF64:
-            {
-                ElfW(Sym) *sym;
-                Section *sec;
-                int32_t x;
-
-                sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
-                sec = s1->sections[sym->st_shndx];
-                x = val - sec->sh_addr - sec->data_offset;
-                add64le(ptr, x);
-            }
-            break;
-        case R_X86_64_NONE:
-            break;
-        case R_X86_64_RELATIVE:
-#ifdef TCC_TARGET_PE
-            add32le(ptr, val - s1->pe_imagebase);
-#endif
-            /* do nothing */
-            break;
-        default:
-            fprintf(stderr,"FIXME: handle reloc type %d at %x [%p] to %x\n",
-                type, (unsigned)addr, ptr, (unsigned)val);
-            break;
-    }
-}
-
-#endif /* !TARGET_DEFS_ONLY */