A lot has certainly happened!

1 files changed, 0 insertions, 325 deletions

diff --git a/tinycc/i386-link.c b/tinycc/i386-link.c
deleted file mode 100644
index 2fb1463..0000000
--- a/tinycc/i386-link.c
+++ /dev/null
@@ -1,325 +0,0 @@
-#ifdef TARGET_DEFS_ONLY
-
-#define EM_TCC_TARGET EM_386
-
-/* relocation type for 32 bit data relocation */
-#define R_DATA_32   R_386_32
-#define R_DATA_PTR  R_386_32
-#define R_JMP_SLOT  R_386_JMP_SLOT
-#define R_GLOB_DAT  R_386_GLOB_DAT
-#define R_COPY      R_386_COPY
-#define R_RELATIVE  R_386_RELATIVE
-
-#define R_NUM       R_386_NUM
-
-#define ELF_START_ADDR 0x08048000
-#define ELF_PAGE_SIZE  0x1000
-
-#define PCRELATIVE_DLLPLT 0
-#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_386_RELATIVE:
-	case R_386_16:
-        case R_386_32:
-	case R_386_GOTPC:
-	case R_386_GOTOFF:
-	case R_386_GOT32:
-	case R_386_GOT32X:
-	case R_386_GLOB_DAT:
-	case R_386_COPY:
-	case R_386_TLS_GD:
-	case R_386_TLS_LDM:
-	case R_386_TLS_LDO_32:
-	case R_386_TLS_LE:
-            return 0;
-
-	case R_386_PC16:
-	case R_386_PC32:
-	case R_386_PLT32:
-	case R_386_JMP_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_386_RELATIVE:
-	case R_386_16:
-	case R_386_GLOB_DAT:
-	case R_386_JMP_SLOT:
-	case R_386_COPY:
-            return NO_GOTPLT_ENTRY;
-
-        case R_386_32:
-	    /* This relocations shouldn't normally need GOT or PLT
-	       slots if it weren't for simplicity in the code generator.
-	       See our caller for comments.  */
-            return AUTO_GOTPLT_ENTRY;
-
-	case R_386_PC16:
-	case R_386_PC32:
-            return AUTO_GOTPLT_ENTRY;
-
-	case R_386_GOTPC:
-	case R_386_GOTOFF:
-            return BUILD_GOT_ONLY;
-
-	case R_386_GOT32:
-	case R_386_GOT32X:
-	case R_386_PLT32:
-	case R_386_TLS_GD:
-	case R_386_TLS_LDM:
-	case R_386_TLS_LDO_32:
-	case R_386_TLS_LE:
-            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;
-
-    /* on i386 if we build a DLL, we add a %ebx offset */
-    if (s1->output_type & TCC_OUTPUT_DYN)
-        modrm = 0xa3;
-    else
-        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 */
-    write32le(p + 7, relofs - sizeof (ElfW_Rel));
-    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 (!(s1->output_type & TCC_OUTPUT_DYN) && p < p_end) {
-        add32le(p + 2, s1->got->sh_addr);
-        add32le(p + 8, s1->got->sh_addr);
-        p += 16;
-        while (p < p_end) {
-            add32le(p + 2, s1->got->sh_addr);
-            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) {
-            write32le(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_386_32:
-            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_386_32);
-                    qrel++;
-                    return;
-                } else {
-                    qrel->r_info = ELFW(R_INFO)(0, R_386_RELATIVE);
-                    qrel++;
-                }
-            }
-            add32le(ptr, val);
-            return;
-        case R_386_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_386_PC32);
-                    qrel++;
-                    return;
-                }
-            }
-            add32le(ptr, val - addr);
-            return;
-        case R_386_PLT32:
-            add32le(ptr, val - addr);
-            return;
-        case R_386_GLOB_DAT:
-        case R_386_JMP_SLOT:
-            write32le(ptr, val);
-            return;
-        case R_386_GOTPC:
-            add32le(ptr, s1->got->sh_addr - addr);
-            return;
-        case R_386_GOTOFF:
-            add32le(ptr, val - s1->got->sh_addr);
-            return;
-        case R_386_GOT32:
-        case R_386_GOT32X:
-            /* we load the got offset */
-            add32le(ptr, get_sym_attr(s1, sym_index, 0)->got_offset);
-            return;
-        case R_386_16:
-            if (s1->output_format != TCC_OUTPUT_FORMAT_BINARY) {
-            output_file:
-                tcc_error_noabort("can only produce 16-bit binary files");
-            }
-            write16le(ptr, read16le(ptr) + val);
-            return;
-        case R_386_PC16:
-            if (s1->output_format != TCC_OUTPUT_FORMAT_BINARY)
-                goto output_file;
-            write16le(ptr, read16le(ptr) + val - addr);
-            return;
-        case R_386_RELATIVE:
-#ifdef TCC_TARGET_PE
-            add32le(ptr, val - s1->pe_imagebase);
-#endif
-            /* do nothing */
-            return;
-        case R_386_COPY:
-            /* This relocation must copy initialized data from the library
-            to the program .bss segment. Currently made like for ARM
-            (to remove noise of default case). Is this true?
-            */
-            return;
-        case R_386_TLS_GD:
-            {
-                static const unsigned char expect[] = {
-                    /* lea 0(,%ebx,1),%eax */
-                    0x8d, 0x04, 0x1d, 0x00, 0x00, 0x00, 0x00,
-                    /* call __tls_get_addr@PLT */
-                    0xe8, 0xfc, 0xff, 0xff, 0xff };
-                static const unsigned char replace[] = {
-                    /* mov %gs:0,%eax */
-                    0x65, 0xa1, 0x00, 0x00, 0x00, 0x00,
-                    /* sub 0,%eax */
-                    0x81, 0xe8, 0x00, 0x00, 0x00, 0x00 };
-
-                if (memcmp (ptr-3, expect, sizeof(expect)) == 0) {
-                    ElfW(Sym) *sym;
-                    Section *sec;
-                    int32_t x;
-
-                    memcpy(ptr-3, replace, sizeof(replace));
-                    rel[1].r_info = ELFW(R_INFO)(0, R_386_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 + 5, -x);
-                }
-                else
-                    tcc_error_noabort("unexpected R_386_TLS_GD pattern");
-            }
-            return;
-        case R_386_TLS_LDM:
-            {
-                static const unsigned char expect[] = {
-                    /* lea 0(%ebx),%eax */
-                    0x8d, 0x83, 0x00, 0x00, 0x00, 0x00,
-                    /* call __tls_get_addr@PLT */
-                    0xe8, 0xfc, 0xff, 0xff, 0xff };
-                static const unsigned char replace[] = {
-                    /* mov %gs:0,%eax */
-                    0x65, 0xa1, 0x00, 0x00, 0x00, 0x00,
-                    /* nop */
-                    0x90,
-                    /* lea 0(%esi,%eiz,1),%esi */
-                    0x8d, 0x74, 0x26, 0x00 };
-
-                if (memcmp (ptr-2, expect, sizeof(expect)) == 0) {
-                    memcpy(ptr-2, replace, sizeof(replace));
-                    rel[1].r_info = ELFW(R_INFO)(0, R_386_NONE);
-                }
-                else
-                    tcc_error_noabort("unexpected R_386_TLS_LDM pattern");
-            }
-            return;
-        case R_386_TLS_LDO_32:
-        case R_386_TLS_LE:
-            {
-                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);
-            }
-            return;
-        case R_386_NONE:
-            return;
-        default:
-            fprintf(stderr,"FIXME: handle reloc type %d at %x [%p] to %x\n",
-                type, (unsigned)addr, ptr, (unsigned)val);
-            return;
-    }
-}
-
-#endif /* !TARGET_DEFS_ONLY */