#include <fcntl.h>
#include <ctype.h>
#include <string.h>
-#ifndef HOST_WIN32
-#include <sys/time.h>
-#else
-#include <winsock2.h>
-#include <windows.h>
-#endif
-
#include <errno.h>
#include <sys/stat.h>
-#include <limits.h> /* for PAGESIZE */
-#ifndef PAGESIZE
-#define PAGESIZE 4096
-#endif
#include "image-writer.h"
-#ifndef HOST_WIN32
-#include <mono/utils/freebsd-elf32.h>
-#include <mono/utils/freebsd-elf64.h>
-#endif
-
#include "mini.h"
-#define TV_DECLARE(name) gint64 name
-#define TV_GETTIME(tv) tv = mono_100ns_ticks ()
-#define TV_ELAPSED(start,end) (((end) - (start)) / 10)
-
/*
* The used assembler dialect
* TARGET_ASM_APPLE == apple assembler on OSX
#define ROUND_DOWN(VALUE,SIZE) ((VALUE) & ~((SIZE) - 1))
-#ifdef USE_BIN_WRITER
-
-typedef struct _BinSymbol BinSymbol;
-typedef struct _BinReloc BinReloc;
-typedef struct _BinSection BinSection;
-
-#endif
-
/* emit mode */
enum {
EMIT_NONE,
struct _MonoImageWriter {
MonoMemPool *mempool;
char *outfile;
- gboolean use_bin_writer;
const char *current_section;
int current_subsection;
const char *section_stack [16];
int subsection_stack [16];
int stack_pos;
FILE *fp;
- /* Bin writer */
-#ifdef USE_BIN_WRITER
- BinSymbol *symbols;
- BinSection *sections;
- BinSection *cur_section;
- BinReloc *relocations;
- GHashTable *labels;
- int num_relocs;
- guint8 *out_buf;
- int out_buf_size, out_buf_pos;
-#endif
/* Asm writer */
char *tmpfname;
int mode; /* emit mode */
return count;
}
-#ifdef USE_BIN_WRITER
-
-typedef struct _BinLabel BinLabel;
-struct _BinLabel {
- char *name;
- BinSection *section;
- int offset;
-};
-
-struct _BinReloc {
- BinReloc *next;
- char *val1;
- char *val2;
- BinSection *val2_section;
- int val2_offset;
- int offset;
- BinSection *section;
- int section_offset;
- int reloc_type;
-};
-
-struct _BinSymbol {
- BinSymbol *next;
- char *name;
- BinSection *section;
- int offset;
- gboolean is_function;
- gboolean is_global;
- char *end_label;
-};
-
-struct _BinSection {
- BinSection *next;
- BinSection *parent;
- char *name;
- int subsection;
- guint8 *data;
- int data_len;
- int cur_offset;
- int file_offset;
- int virt_offset;
- int shidx;
- guint64 addr;
- gboolean has_addr;
-};
-
-static void
-bin_writer_emit_start (MonoImageWriter *acfg)
-{
- acfg->labels = g_hash_table_new (g_str_hash, g_str_equal);
-}
-
-static void
-bin_writer_emit_section_change (MonoImageWriter *acfg, const char *section_name, int subsection_index)
-{
- BinSection *section;
-
- if (acfg->cur_section && acfg->cur_section->subsection == subsection_index
- && strcmp (acfg->cur_section->name, section_name) == 0)
- return;
- for (section = acfg->sections; section; section = section->next) {
- if (section->subsection == subsection_index && strcmp (section->name, section_name) == 0) {
- acfg->cur_section = section;
- return;
- }
- }
- if (!section) {
- section = g_new0 (BinSection, 1);
- section->name = g_strdup (section_name);
- section->subsection = subsection_index;
- section->next = acfg->sections;
- acfg->sections = section;
- acfg->cur_section = section;
- }
-}
-
-static void
-bin_writer_set_section_addr (MonoImageWriter *acfg, guint64 addr)
-{
- acfg->cur_section->addr = addr;
- acfg->cur_section->has_addr = TRUE;
-}
-
-static void
-bin_writer_emit_symbol_inner (MonoImageWriter *acfg, const char *name, const char *end_label, gboolean is_global, gboolean func)
-{
- BinSymbol *symbol = g_new0 (BinSymbol, 1);
- symbol->name = g_strdup (name);
- if (end_label)
- symbol->end_label = g_strdup (end_label);
- symbol->is_function = func;
- symbol->is_global = is_global;
- symbol->section = acfg->cur_section;
- /* FIXME: we align after this call... */
- symbol->offset = symbol->section->cur_offset;
- symbol->next = acfg->symbols;
- acfg->symbols = symbol;
-}
-
-static void
-bin_writer_emit_global (MonoImageWriter *acfg, const char *name, gboolean func)
-{
- bin_writer_emit_symbol_inner (acfg, name, NULL, TRUE, func);
-}
-
-static void
-bin_writer_emit_local_symbol (MonoImageWriter *acfg, const char *name, const char *end_label, gboolean func)
-{
- bin_writer_emit_symbol_inner (acfg, name, end_label, FALSE, func);
-}
-
-static void
-bin_writer_emit_label (MonoImageWriter *acfg, const char *name)
-{
- BinLabel *label = g_new0 (BinLabel, 1);
- label->name = g_strdup (name);
- label->section = acfg->cur_section;
- label->offset = acfg->cur_section->cur_offset;
- g_hash_table_insert (acfg->labels, label->name, label);
-}
-
-static void
-bin_writer_emit_ensure_buffer (BinSection *section, int size)
-{
- int new_offset = section->cur_offset + size;
- if (new_offset >= section->data_len) {
- int new_size = section->data_len? section->data_len * 2: 256;
- guint8 *data;
- while (new_size <= new_offset)
- new_size *= 2;
- data = (guint8 *)g_malloc0 (new_size);
- memcpy (data, section->data, section->data_len);
- g_free (section->data);
- section->data = data;
- section->data_len = new_size;
- }
-}
-
-static void
-bin_writer_emit_bytes (MonoImageWriter *acfg, const guint8* buf, int size)
-{
- bin_writer_emit_ensure_buffer (acfg->cur_section, size);
- memcpy (acfg->cur_section->data + acfg->cur_section->cur_offset, buf, size);
- acfg->cur_section->cur_offset += size;
-}
-
-static void
-bin_writer_emit_string (MonoImageWriter *acfg, const char *value)
-{
- int size = strlen (value) + 1;
- bin_writer_emit_bytes (acfg, (const guint8*)value, size);
-}
-
-static void
-bin_writer_emit_line (MonoImageWriter *acfg)
-{
- /* Nothing to do in binary writer */
-}
-
-static void
-bin_writer_emit_alignment (MonoImageWriter *acfg, int size)
-{
- int offset = acfg->cur_section->cur_offset;
- int add;
- offset += (size - 1);
- offset &= ~(size - 1);
- add = offset - acfg->cur_section->cur_offset;
- if (add) {
- bin_writer_emit_ensure_buffer (acfg->cur_section, add);
- acfg->cur_section->cur_offset += add;
- }
-}
-
-static void
-bin_writer_emit_pointer_unaligned (MonoImageWriter *acfg, const char *target)
-{
- BinReloc *reloc;
-
- if (!target) {
- acfg->cur_section->cur_offset += sizeof (gpointer);
- return;
- }
-
- reloc = g_new0 (BinReloc, 1);
- reloc->val1 = g_strdup (target);
- reloc->section = acfg->cur_section;
- reloc->section_offset = acfg->cur_section->cur_offset;
- reloc->next = acfg->relocations;
- acfg->relocations = reloc;
- if (strcmp (reloc->section->name, ".data") == 0) {
- acfg->num_relocs++;
- //g_print ("reloc: %s at %d\n", target, acfg->cur_section->cur_offset);
- }
- acfg->cur_section->cur_offset += sizeof (gpointer);
-}
-
-static void
-bin_writer_emit_pointer (MonoImageWriter *acfg, const char *target)
-{
- bin_writer_emit_alignment (acfg, sizeof (gpointer));
- bin_writer_emit_pointer_unaligned (acfg, target);
-}
-
-static void
-bin_writer_emit_int16 (MonoImageWriter *acfg, int value)
-{
- guint8 *data;
- bin_writer_emit_ensure_buffer (acfg->cur_section, 2);
- data = acfg->cur_section->data + acfg->cur_section->cur_offset;
- acfg->cur_section->cur_offset += 2;
- /* FIXME: little endian */
- data [0] = value;
- data [1] = value >> 8;
-}
-
-static void
-bin_writer_emit_int32 (MonoImageWriter *acfg, int value)
-{
- guint8 *data;
- bin_writer_emit_ensure_buffer (acfg->cur_section, 4);
- data = acfg->cur_section->data + acfg->cur_section->cur_offset;
- acfg->cur_section->cur_offset += 4;
- /* FIXME: little endian */
- data [0] = value;
- data [1] = value >> 8;
- data [2] = value >> 16;
- data [3] = value >> 24;
-}
-
-static BinReloc*
-create_reloc (MonoImageWriter *acfg, const char *end, const char* start, int offset)
-{
- BinReloc *reloc;
- reloc = (BinReloc *)mono_mempool_alloc0 (acfg->mempool, sizeof (BinReloc));
- reloc->val1 = mono_mempool_strdup (acfg->mempool, end);
- if (start)
- {
- if (strcmp (start, ".") == 0) {
- reloc->val2_section = acfg->cur_section;
- reloc->val2_offset = acfg->cur_section->cur_offset;
- } else {
- reloc->val2 = mono_mempool_strdup (acfg->mempool, start);
- }
- }
- reloc->offset = offset;
- reloc->section = acfg->cur_section;
- reloc->section_offset = acfg->cur_section->cur_offset;
- reloc->next = acfg->relocations;
- acfg->relocations = reloc;
- return reloc;
-}
-
-static void
-bin_writer_emit_symbol (MonoImageWriter *acfg, const char *symbol)
-{
- create_reloc (acfg, symbol, NULL, 0);
- acfg->cur_section->cur_offset += 4;
-}
-
-static void
-bin_writer_emit_symbol_diff (MonoImageWriter *acfg, const char *end, const char* start, int offset)
-{
- create_reloc (acfg, end, start, offset);
- acfg->cur_section->cur_offset += 4;
- /*if (strcmp (reloc->section->name, ".data") == 0) {
- acfg->num_relocs++;
- g_print ("reloc: %s - %s + %d at %d\n", end, start, offset, acfg->cur_section->cur_offset - 4);
- }*/
-}
-
-/*
- * Emit a relocation entry of type RELOC_TYPE against symbol SYMBOL at the current PC.
- * Do not advance PC.
- */
-static G_GNUC_UNUSED void
-bin_writer_emit_reloc (MonoImageWriter *acfg, int reloc_type, const char *symbol, int addend)
-{
- BinReloc *reloc = create_reloc (acfg, symbol, ".", addend);
- reloc->reloc_type = reloc_type;
-}
-
-static void
-bin_writer_emit_zero_bytes (MonoImageWriter *acfg, int num)
-{
- bin_writer_emit_ensure_buffer (acfg->cur_section, num);
- acfg->cur_section->cur_offset += num;
-}
-
-static void
-bin_writer_fwrite (MonoImageWriter *acfg, void *val, size_t size, size_t nmemb)
-{
- if (acfg->fp)
- fwrite (val, size, nmemb, acfg->fp);
- else {
- g_assert (acfg->out_buf_pos + (size * nmemb) <= acfg->out_buf_size);
- memcpy (acfg->out_buf + acfg->out_buf_pos, val, size * nmemb);
- acfg->out_buf_pos += (size * nmemb);
- }
-}
-
-static void
-bin_writer_fseek (MonoImageWriter *acfg, int offset)
-{
- if (acfg->fp)
- fseek (acfg->fp, offset, SEEK_SET);
- else
- acfg->out_buf_pos = offset;
-}
-
-#ifdef USE_MACH_WRITER
-
-/*
- * This is a minimal implementation designed to support xdebug on 32 bit osx
- * FIXME: 64 bit support
- */
-
-#include <mach-o/loader.h>
-
-static gsize
-get_label_addr (MonoImageWriter *acfg, const char *name)
-{
- int offset;
- BinLabel *lab;
- BinSection *section;
- gsize value;
-
- lab = g_hash_table_lookup (acfg->labels, name);
- if (!lab)
- g_error ("Undefined label: '%s'.\n", name);
- section = lab->section;
- offset = lab->offset;
- if (section->parent) {
- value = section->parent->virt_offset + section->cur_offset + offset;
- } else {
- value = section->virt_offset + offset;
- }
- return value;
-}
-
-
-static void
-resolve_reloc (MonoImageWriter *acfg, BinReloc *reloc, guint8 **out_data, gsize *out_vaddr, gsize *out_start_val, gsize *out_end_val)
-{
- guint8 *data;
- gssize end_val, start_val;
- gsize vaddr;
-
- end_val = get_label_addr (acfg, reloc->val1);
- if (reloc->val2) {
- start_val = get_label_addr (acfg, reloc->val2);
- } else if (reloc->val2_section) {
- start_val = reloc->val2_offset;
- if (reloc->val2_section->parent)
- start_val += reloc->val2_section->parent->virt_offset + reloc->val2_section->cur_offset;
- else
- start_val += reloc->val2_section->virt_offset;
- } else {
- start_val = 0;
- }
- end_val = end_val - start_val + reloc->offset;
- if (reloc->section->parent) {
- data = reloc->section->parent->data;
- data += reloc->section->cur_offset;
- data += reloc->section_offset;
- vaddr = reloc->section->parent->virt_offset;
- vaddr += reloc->section->cur_offset;
- vaddr += reloc->section_offset;
- } else {
- data = reloc->section->data;
- data += reloc->section_offset;
- vaddr = reloc->section->virt_offset;
- vaddr += reloc->section_offset;
- }
-
- *out_start_val = start_val;
- *out_end_val = end_val;
- *out_data = data;
- *out_vaddr = vaddr;
-}
-
-static void
-resolve_relocations (MonoImageWriter *acfg)
-{
- BinReloc *reloc;
- guint8 *data;
- gsize end_val, start_val;
- gsize vaddr;
-
- /* Only resolve static relocations */
- for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
- resolve_reloc (acfg, reloc, &data, &vaddr, &start_val, &end_val);
- data [0] = end_val;
- data [1] = end_val >> 8;
- data [2] = end_val >> 16;
- data [3] = end_val >> 24;
- }
-}
-
-static int
-bin_writer_emit_writeout (MonoImageWriter *acfg)
-{
- BinSection *s;
- int sindex, file_size, nsections, file_offset, vmaddr;
- struct mach_header header;
- struct segment_command segment;
- struct section *sections;
-
- /* Assing vm addresses to sections */
- nsections = 0;
- vmaddr = 0;
- for (s = acfg->sections; s; s = s->next) {
- s->virt_offset = vmaddr;
- vmaddr += s->cur_offset;
- nsections ++;
- }
-
- resolve_relocations (acfg);
-
- file_offset = 0;
-
- memset (&header, 0, sizeof (header));
- header.magic = MH_MAGIC;
- header.cputype = CPU_TYPE_X86;
- header.cpusubtype = CPU_SUBTYPE_X86_ALL;
- header.filetype = MH_OBJECT;
- header.ncmds = 0;
- header.sizeofcmds = 0;
- header.flags = 0;
-
- file_offset += sizeof (header);
-
- memset (&segment, 0, sizeof (segment));
- segment.cmd = LC_SEGMENT;
- segment.cmdsize = sizeof (segment);
- segment.maxprot = VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE;
- segment.initprot = VM_PROT_READ|VM_PROT_WRITE|VM_PROT_EXECUTE;
-
- file_offset += sizeof (segment);
- file_offset += nsections * sizeof (struct section);
-
- sections = g_new0 (struct section, nsections);
- sindex = 0;
- for (s = acfg->sections; s; s = s->next) {
- s->file_offset = file_offset;
-
- /* .debug_line -> __debug_line */
- sprintf (sections [sindex].sectname, "__%s", s->name + 1);
- sprintf (sections [sindex].segname, "%s", "__DWARF");
- sections [sindex].addr = s->virt_offset;
- sections [sindex].size = s->cur_offset;
- sections [sindex].offset = s->file_offset;
-
- file_offset += s->cur_offset;
-
- segment.nsects ++;
- segment.cmdsize += sizeof (struct section);
-
- sindex ++;
- }
-
- header.ncmds ++;
- header.sizeofcmds += segment.cmdsize;
-
- /* Emit data */
- file_size = file_offset;
-
- if (!acfg->fp) {
- acfg->out_buf_size = file_size;
- acfg->out_buf = g_malloc (acfg->out_buf_size);
- }
-
- bin_writer_fwrite (acfg, &header, sizeof (header), 1);
- bin_writer_fwrite (acfg, &segment, sizeof (segment), 1);
- bin_writer_fwrite (acfg, sections, sizeof (struct section), nsections);
- for (s = acfg->sections; s; s = s->next) {
- if (!acfg->fp)
- g_assert (acfg->out_buf_pos == s->file_offset);
- bin_writer_fwrite (acfg, s->data, s->cur_offset, 1);
- }
-
- if (acfg->fp)
- fclose (acfg->fp);
-
- return 0;
-}
-
-#endif
-
-#ifdef USE_ELF_WRITER
-
-enum {
- SECT_NULL,
- SECT_HASH,
- SECT_DYNSYM,
- SECT_DYNSTR,
- SECT_REL_DYN,
- SECT_RELA_DYN,
- SECT_TEXT,
- SECT_RODATA,
- SECT_DYNAMIC,
- SECT_GOT_PLT,
- SECT_DATA,
- SECT_BSS,
- SECT_DEBUG_FRAME,
- SECT_DEBUG_INFO,
- SECT_DEBUG_ABBREV,
- SECT_DEBUG_LINE,
- SECT_DEBUG_LOC,
- SECT_SHSTRTAB,
- SECT_SYMTAB,
- SECT_STRTAB,
- SECT_NUM
-};
-
-#if TARGET_SIZEOF_VOID_P == 4
-
-typedef Elf32_Ehdr ElfHeader;
-typedef Elf32_Shdr ElfSectHeader;
-typedef Elf32_Phdr ElfProgHeader;
-typedef Elf32_Sym ElfSymbol;
-typedef Elf32_Rel ElfReloc;
-typedef Elf32_Rela ElfRelocA;
-typedef Elf32_Dyn ElfDynamic;
-
-#else
-
-typedef Elf64_Ehdr ElfHeader;
-typedef Elf64_Shdr ElfSectHeader;
-typedef Elf64_Phdr ElfProgHeader;
-typedef Elf64_Sym ElfSymbol;
-typedef Elf64_Rel ElfReloc;
-typedef Elf64_Rela ElfRelocA;
-typedef Elf64_Dyn ElfDynamic;
-
-#endif
-
-typedef struct {
- const char *name;
- int type;
- int esize;
- int flags;
- int align;
-} SectInfo;
-
-static SectInfo section_info [] = {
- {"", 0, 0, 0, 0},
- {".hash", SHT_HASH, 4, 2, TARGET_SIZEOF_VOID_P},
- {".dynsym", SHT_DYNSYM, sizeof (ElfSymbol), 2, TARGET_SIZEOF_VOID_P},
- {".dynstr", SHT_STRTAB, 0, 2, 1},
- {".rel.dyn", SHT_REL, sizeof (ElfReloc), 2, TARGET_SIZEOF_VOID_P},
- {".rela.dyn", SHT_RELA, sizeof (ElfRelocA), 2, TARGET_SIZEOF_VOID_P},
- {".text", SHT_PROGBITS, 0, 6, 4096},
- {".rodata", SHT_PROGBITS, 0, SHF_ALLOC, 4096},
- {".dynamic", SHT_DYNAMIC, sizeof (ElfDynamic), 3, TARGET_SIZEOF_VOID_P},
- {".got.plt", SHT_PROGBITS, TARGET_SIZEOF_VOID_P, 3, TARGET_SIZEOF_VOID_P},
- {".data", SHT_PROGBITS, 0, 3, 8},
- {".bss", SHT_NOBITS, 0, 3, 8},
- {".debug_frame", SHT_PROGBITS, 0, 0, 8},
- {".debug_info", SHT_PROGBITS, 0, 0, 1},
- {".debug_abbrev", SHT_PROGBITS, 0, 0, 1},
- {".debug_line", SHT_PROGBITS, 0, 0, 1},
- {".debug_loc", SHT_PROGBITS, 0, 0, 1},
- {".shstrtab", SHT_STRTAB, 0, 0, 1},
- {".symtab", SHT_SYMTAB, sizeof (ElfSymbol), 0, TARGET_SIZEOF_VOID_P},
- {".strtab", SHT_STRTAB, 0, 0, 1}
-};
-
-typedef struct {
- GString *data;
- GHashTable *hash;
-} ElfStrTable;
-
-static int
-str_table_add (ElfStrTable *table, const char* value)
-{
- int idx;
- if (!table->data) {
- table->data = g_string_new_len ("", 1);
- table->hash = g_hash_table_new (g_str_hash, g_str_equal);
- }
- idx = GPOINTER_TO_UINT (g_hash_table_lookup (table->hash, value));
- if (idx)
- return idx;
- idx = table->data->len;
- g_string_append (table->data, value);
- g_string_append_c (table->data, 0);
- g_hash_table_insert (table->hash, (void*)value, GUINT_TO_POINTER (idx));
- return idx;
-}
-
-static void
-append_subsection (MonoImageWriter *acfg, ElfSectHeader *sheaders, BinSection *sect, BinSection *add)
-{
- int offset = sect->cur_offset;
- /*offset += (sheaders [sect->shidx].sh_addralign - 1);
- offset &= ~(sheaders [sect->shidx].sh_addralign - 1);*/
- /*
- * FIXME: we shouldn't align subsections at all, but if we don't then the
- * stuff inside the subsections which is aligned won't get aligned.
- */
- if (strcmp (sect->name, ".debug_line") != 0) {
- offset += (8 - 1);
- offset &= ~(8 - 1);
- }
- bin_writer_emit_ensure_buffer (sect, offset);
- //g_print ("section %s aligned to %d from %d\n", sect->name, offset, sect->cur_offset);
- sect->cur_offset = offset;
-
- bin_writer_emit_ensure_buffer (sect, add->cur_offset);
- memcpy (sect->data + sect->cur_offset, add->data, add->cur_offset);
- add->parent = sect;
- sect->cur_offset += add->cur_offset;
- add->cur_offset = offset; /* it becomes the offset in the parent section */
- //g_print ("subsection %d of %s added at offset %d (align: %d)\n", add->subsection, sect->name, add->cur_offset, (int)sheaders [sect->shidx].sh_addralign);
- add->data = NULL;
- add->data_len = 0;
-}
-
-/* merge the subsections */
-static int
-collect_sections (MonoImageWriter *acfg, ElfSectHeader *sheaders, BinSection **out, int num)
-{
- int i, j, maxs, num_sections;
- BinSection *sect;
-
- num_sections = 0;
- maxs = 0;
- for (sect = acfg->sections; sect; sect = sect->next) {
- if (sect->subsection == 0) {
- out [num_sections++] = sect;
- g_assert (num_sections < num);
- }
- maxs = MAX (maxs, sect->subsection);
- }
- for (i = 0; i < num_sections; i++) {
- for (j = 1; j <= maxs; ++j) {
- for (sect = acfg->sections; sect; sect = sect->next) {
- if (sect->subsection == j && strcmp (out [i]->name, sect->name) == 0) {
- append_subsection (acfg, sheaders, out [i], sect);
- }
- }
- }
- }
- return num_sections;
-}
-
-static unsigned long
-elf_hash (const unsigned char *name)
-{
- unsigned long h = 0, g;
- while (*name) {
- h = (h << 4) + *name++;
- if ((g = h & 0xf0000000))
- h ^= g >> 24;
- h &= ~g;
- }
- return h;
-}
-
-#define NUM_BUCKETS 17
-
-static int*
-build_hash (MonoImageWriter *acfg, int num_sections, ElfStrTable *dynstr)
-{
- int *data;
- int num_symbols = 1 + num_sections + 3;
- BinSymbol *symbol;
-
- for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
- if (!symbol->is_global)
- continue;
- num_symbols++;
- str_table_add (dynstr, symbol->name);
- /*g_print ("adding sym: %s\n", symbol->name);*/
- }
- str_table_add (dynstr, "__bss_start");
- str_table_add (dynstr, "_edata");
- str_table_add (dynstr, "_end");
-
- data = g_new0 (int, num_symbols + 2 + NUM_BUCKETS);
- data [0] = NUM_BUCKETS;
- data [1] = num_symbols;
-
- return data;
-}
-
-static gsize
-get_label_addr (MonoImageWriter *acfg, const char *name)
-{
- int offset;
- BinLabel *lab;
- BinSection *section;
- gsize value;
-
- lab = (BinLabel *)g_hash_table_lookup (acfg->labels, name);
- if (!lab)
- g_error ("Undefined label: '%s'.\n", name);
- section = lab->section;
- offset = lab->offset;
- if (section->parent) {
- value = section->parent->virt_offset + section->cur_offset + offset;
- } else {
- value = section->virt_offset + offset;
- }
- return value;
-}
-
-static ElfSymbol*
-collect_syms (MonoImageWriter *acfg, int *hash, ElfStrTable *strtab, ElfSectHeader *sheaders, int *num_syms)
-{
- ElfSymbol *symbols;
- BinSymbol *symbol;
- BinSection *section;
- int i;
- int *bucket;
- int *chain;
- unsigned long hashc;
-
- if (hash)
- symbols = g_new0 (ElfSymbol, hash [1]);
- else {
- i = 0;
- for (symbol = acfg->symbols; symbol; symbol = symbol->next)
- i ++;
-
- symbols = g_new0 (ElfSymbol, i + SECT_NUM + 10); /* FIXME */
- }
-
- /* the first symbol is undef, all zeroes */
- i = 1;
- if (sheaders) {
- int j;
- for (j = 1; j < SECT_NUM; ++j) {
- symbols [i].st_info = ELF32_ST_INFO (STB_LOCAL, STT_SECTION);
- symbols [i].st_shndx = j;
- symbols [i].st_value = sheaders [j].sh_addr;
- ++i;
- }
- } else {
- for (section = acfg->sections; section; section = section->next) {
- if (section->parent)
- continue;
- symbols [i].st_info = ELF32_ST_INFO (STB_LOCAL, STT_SECTION);
- if (strcmp (section->name, ".text") == 0) {
- symbols [i].st_shndx = SECT_TEXT;
- section->shidx = SECT_TEXT;
- section->file_offset = 4096;
- symbols [i].st_value = section->virt_offset;
- } else if (strcmp (section->name, ".rodata") == 0) {
- symbols [i].st_shndx = SECT_RODATA;
- section->shidx = SECT_RODATA;
- section->file_offset = 4096;
- symbols [i].st_value = section->virt_offset;
- } else if (strcmp (section->name, ".data") == 0) {
- symbols [i].st_shndx = SECT_DATA;
- section->shidx = SECT_DATA;
- section->file_offset = 4096 + 28; /* FIXME */
- symbols [i].st_value = section->virt_offset;
- } else if (strcmp (section->name, ".bss") == 0) {
- symbols [i].st_shndx = SECT_BSS;
- section->shidx = SECT_BSS;
- section->file_offset = 4096 + 28 + 8; /* FIXME */
- symbols [i].st_value = section->virt_offset;
- }
- ++i;
- }
- }
- for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
- int offset;
- BinLabel *lab;
- if (!symbol->is_global && hash)
- continue;
- symbols [i].st_info = ELF32_ST_INFO (symbol->is_global ? STB_GLOBAL : STB_LOCAL, symbol->is_function? STT_FUNC : STT_OBJECT);
- symbols [i].st_name = str_table_add (strtab, symbol->name);
- /*g_print ("sym name %s tabled to %d\n", symbol->name, symbols [i].st_name);*/
- section = symbol->section;
- symbols [i].st_shndx = section->parent? section->parent->shidx: section->shidx;
- lab = (BinLabel *)g_hash_table_lookup (acfg->labels, symbol->name);
- offset = lab->offset;
- if (section->parent) {
- symbols [i].st_value = section->parent->virt_offset + section->cur_offset + offset;
- } else {
- symbols [i].st_value = section->virt_offset + offset;
- }
-
- if (symbol->end_label) {
- BinLabel *elab = (BinLabel *)g_hash_table_lookup (acfg->labels, symbol->end_label);
- g_assert (elab);
- symbols [i].st_size = elab->offset - lab->offset;
- }
- ++i;
- }
- /* add special symbols */
- symbols [i].st_name = str_table_add (strtab, "__bss_start");
- symbols [i].st_shndx = 0xfff1;
- symbols [i].st_info = ELF32_ST_INFO (STB_GLOBAL, 0);
- ++i;
- symbols [i].st_name = str_table_add (strtab, "_edata");
- symbols [i].st_shndx = 0xfff1;
- symbols [i].st_info = ELF32_ST_INFO (STB_GLOBAL, 0);
- ++i;
- symbols [i].st_name = str_table_add (strtab, "_end");
- symbols [i].st_shndx = 0xfff1;
- symbols [i].st_info = ELF32_ST_INFO (STB_GLOBAL, 0);
- ++i;
-
- if (num_syms)
- *num_syms = i;
-
- /* add to hash table */
- if (hash) {
- bucket = hash + 2;
- chain = hash + 2 + hash [0];
- for (i = 0; i < hash [1]; ++i) {
- int slot;
- /*g_print ("checking %d '%s' (sym %d)\n", symbols [i].st_name, strtab->data->str + symbols [i].st_name, i);*/
- if (!symbols [i].st_name)
- continue;
- hashc = elf_hash ((guint8*)strtab->data->str + symbols [i].st_name);
- slot = hashc % hash [0];
- /*g_print ("hashing '%s' at slot %d (sym %d)\n", strtab->data->str + symbols [i].st_name, slot, i);*/
- if (bucket [slot]) {
- chain [i] = bucket [slot];
- bucket [slot] = i;
- } else {
- bucket [slot] = i;
- }
- }
- }
- return symbols;
-}
-
-static void
-reloc_symbols (MonoImageWriter *acfg, ElfSymbol *symbols, ElfSectHeader *sheaders, ElfStrTable *strtab, gboolean dynamic)
-{
- BinSection *section;
- BinSymbol *symbol;
- int i;
-
- i = 1;
- if (dynamic) {
- for (section = acfg->sections; section; section = section->next) {
- if (section->parent)
- continue;
- symbols [i].st_value = sheaders [section->shidx].sh_addr;
- ++i;
- }
- } else {
- for (i = 1; i < SECT_NUM; ++i) {
- symbols [i].st_value = sheaders [i].sh_addr;
- }
- }
- for (symbol = acfg->symbols; symbol; symbol = symbol->next) {
- int offset;
- BinLabel *lab;
- if (dynamic && !symbol->is_global)
- continue;
- section = symbol->section;
- lab = (BinLabel *)g_hash_table_lookup (acfg->labels, symbol->name);
- offset = lab->offset;
- if (section->parent) {
- symbols [i].st_value = sheaders [section->parent->shidx].sh_addr + section->cur_offset + offset;
- } else {
- symbols [i].st_value = sheaders [section->shidx].sh_addr + offset;
- }
- ++i;
- }
- /* __bss_start */
- symbols [i].st_value = sheaders [SECT_BSS].sh_addr;
- ++i;
- /* _edata */
- symbols [i].st_value = sheaders [SECT_DATA].sh_addr + sheaders [SECT_DATA].sh_size;
- ++i;
- /* _end */
- symbols [i].st_value = sheaders [SECT_BSS].sh_addr + sheaders [SECT_BSS].sh_size;
- ++i;
-}
-
-static void
-resolve_reloc (MonoImageWriter *acfg, BinReloc *reloc, guint8 **out_data, gsize *out_vaddr, gsize *out_start_val, gsize *out_end_val)
-{
- guint8 *data;
- gssize end_val, start_val;
- gsize vaddr;
-
- end_val = get_label_addr (acfg, reloc->val1);
- if (reloc->val2) {
- start_val = get_label_addr (acfg, reloc->val2);
- } else if (reloc->val2_section) {
- start_val = reloc->val2_offset;
- if (reloc->val2_section->parent)
- start_val += reloc->val2_section->parent->virt_offset + reloc->val2_section->cur_offset;
- else
- start_val += reloc->val2_section->virt_offset;
- } else {
- start_val = 0;
- }
- end_val = end_val - start_val + reloc->offset;
- if (reloc->section->parent) {
- data = reloc->section->parent->data;
- data += reloc->section->cur_offset;
- data += reloc->section_offset;
- vaddr = reloc->section->parent->virt_offset;
- vaddr += reloc->section->cur_offset;
- vaddr += reloc->section_offset;
- } else {
- data = reloc->section->data;
- data += reloc->section_offset;
- vaddr = reloc->section->virt_offset;
- vaddr += reloc->section_offset;
- }
-
- *out_start_val = start_val;
- *out_end_val = end_val;
- *out_data = data;
- *out_vaddr = vaddr;
-}
-
-#ifdef USE_ELF_RELA
-
-static ElfRelocA*
-resolve_relocations (MonoImageWriter *acfg)
-{
- BinReloc *reloc;
- guint8 *data;
- gsize end_val, start_val;
- ElfRelocA *rr;
- int i;
- gsize vaddr;
-
- rr = g_new0 (ElfRelocA, acfg->num_relocs);
- i = 0;
-
- for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
- resolve_reloc (acfg, reloc, &data, &vaddr, &start_val, &end_val);
- /* FIXME: little endian */
- data [0] = end_val;
- data [1] = end_val >> 8;
- data [2] = end_val >> 16;
- data [3] = end_val >> 24;
- // FIXME:
- if (start_val == 0 && reloc->val1 [0] != '.') {
- rr [i].r_offset = vaddr;
- rr [i].r_info = R_X86_64_RELATIVE;
- rr [i].r_addend = end_val;
- ++i;
- g_assert (i <= acfg->num_relocs);
- }
- }
- return rr;
-}
-
-#else /* USE_ELF_RELA */
-
-static void
-do_reloc (MonoImageWriter *acfg, BinReloc *reloc, guint8 *data, gssize addr)
-{
-#ifdef TARGET_ARM
- /*
- * We use the official ARM relocation types, but implement only the stuff actually
- * needed by the code we generate.
- */
- switch (reloc->reloc_type) {
- case R_ARM_CALL:
- case R_ARM_JUMP24: {
- guint32 *code = (guint32*)(gpointer)data;
- guint32 ins = *code;
- int diff = addr;
-
- if (reloc->reloc_type == R_ARM_CALL)
- /* bl */
- g_assert (data [3] == 0xeb);
- else
- /* b */
- g_assert (data [3] == 0xea);
- if (diff >= 0 && diff <= 33554431) {
- diff >>= 2;
- ins = (ins & 0xff000000) | diff;
- *code = ins;
- } else if (diff <= 0 && diff >= -33554432) {
- diff >>= 2;
- ins = (ins & 0xff000000) | (diff & ~0xff000000);
- *code = ins;
- } else {
- g_assert_not_reached ();
- }
- break;
- }
- case R_ARM_ALU_PC_G0_NC: {
- /* Generated by emit_plt () */
- guint8 *code = data;
- guint32 val = addr;
-
- g_assert (val <= 0xffffff);
- if (val & 0xff0000)
- ARM_ADD_REG_IMM (code, ARMREG_IP, ARMREG_PC, (val & 0xFF0000) >> 16, 16);
- else
- ARM_ADD_REG_IMM (code, ARMREG_IP, ARMREG_PC, 0, 0);
- ARM_ADD_REG_IMM (code, ARMREG_IP, ARMREG_IP, (val & 0xFF00) >> 8, 24);
- ARM_LDR_IMM (code, ARMREG_PC, ARMREG_IP, val & 0xFF);
- break;
- }
- default:
- g_assert_not_reached ();
- }
-#else
- g_assert_not_reached ();
-#endif
-}
-
-static ElfReloc*
-resolve_relocations (MonoImageWriter *acfg)
-{
- BinReloc *reloc;
- guint8 *data;
- gsize end_val, start_val;
- ElfReloc *rr;
- int i;
- gsize vaddr;
-
- rr = g_new0 (ElfReloc, acfg->num_relocs);
- i = 0;
-
- for (reloc = acfg->relocations; reloc; reloc = reloc->next) {
- resolve_reloc (acfg, reloc, &data, &vaddr, &start_val, &end_val);
- /* FIXME: little endian */
- if (reloc->reloc_type) {
- /* Must be static */
- g_assert (start_val > 0);
- do_reloc (acfg, reloc, data, end_val);
- } else {
- data [0] = end_val;
- data [1] = end_val >> 8;
- data [2] = end_val >> 16;
- data [3] = end_val >> 24;
- }
- // FIXME:
- if (start_val == 0 && reloc->val1 [0] != '.') {
- rr [i].r_offset = vaddr;
- rr [i].r_info = R_386_RELATIVE;
- ++i;
- g_assert (i <= acfg->num_relocs);
- }
- }
- return rr;
-}
-
-#endif /* USE_ELF_RELA */
-
-static int normal_sections [] = { SECT_DATA, SECT_DEBUG_FRAME, SECT_DEBUG_INFO, SECT_DEBUG_ABBREV, SECT_DEBUG_LINE, SECT_DEBUG_LOC };
-
-static int
-bin_writer_emit_writeout (MonoImageWriter *acfg)
-{
- ElfHeader header;
- ElfProgHeader progh [4];
- ElfSectHeader secth [SECT_NUM];
-#ifdef USE_ELF_RELA
- ElfRelocA *relocs;
-#else
- ElfReloc *relocs;
-#endif
- ElfStrTable str_table = {NULL, NULL};
- ElfStrTable sh_str_table = {NULL, NULL};
- ElfStrTable dyn_str_table = {NULL, NULL};
- BinSection* all_sections [32];
- BinSection* sections [SECT_NUM];
- ElfSymbol *dynsym;
- ElfSymbol *symtab;
- ElfDynamic dynamic [14];
- int *hash;
- int i, num_sections, file_offset, virt_offset, size;
- int num_local_syms;
-
- /* Section headers */
- memset (§h, 0, sizeof (secth));
- memset (&dynamic, 0, sizeof (dynamic));
- memset (&header, 0, sizeof (header));
-
- for (i = 1; i < SECT_NUM; ++i) {
- secth [i].sh_name = str_table_add (&sh_str_table, section_info [i].name);
- secth [i].sh_type = section_info [i].type;
- secth [i].sh_addralign = section_info [i].align;
- secth [i].sh_flags = section_info [i].flags;
- secth [i].sh_entsize = section_info [i].esize;
- }
- secth [SECT_DYNSYM].sh_info = TARGET_SIZEOF_VOID_P == 4 ? 4 : 2;
- secth [SECT_SYMTAB].sh_info = TARGET_SIZEOF_VOID_P == 4 ? 20 : 17;
- secth [SECT_HASH].sh_link = SECT_DYNSYM;
- secth [SECT_DYNSYM].sh_link = SECT_DYNSTR;
- secth [SECT_REL_DYN].sh_link = SECT_DYNSYM;
- secth [SECT_RELA_DYN].sh_link = SECT_DYNSYM;
- secth [SECT_DYNAMIC].sh_link = SECT_DYNSTR;
- secth [SECT_SYMTAB].sh_link = SECT_STRTAB;
-
- num_sections = collect_sections (acfg, secth, all_sections, 16);
- hash = build_hash (acfg, num_sections, &dyn_str_table);
-#if 0
- g_print ("num_sections: %d\n", num_sections);
- g_print ("dynsym: %d, dynstr size: %d\n", hash [1], (int)dyn_str_table.data->len);
- for (i = 0; i < num_sections; ++i) {
- g_print ("section %s, size: %d, %x\n", all_sections [i]->name, all_sections [i]->cur_offset, all_sections [i]->cur_offset);
- }
-#endif
- /* Associate the bin sections with the ELF sections */
- memset (sections, 0, sizeof (sections));
- for (i = 0; i < num_sections; ++i) {
- BinSection *sect = all_sections [i];
- int j;
-
- for (j = 0; j < SECT_NUM; ++j) {
- if (strcmp (sect->name, section_info [j].name) == 0) {
- sect->shidx = j;
- break;
- }
- }
-
- sections [all_sections [i]->shidx] = sect;
- }
-
- /* at this point we know where in the file the first segment sections go */
- dynsym = collect_syms (acfg, hash, &dyn_str_table, NULL, NULL);
- num_local_syms = hash [1];
- symtab = collect_syms (acfg, NULL, &str_table, secth, &num_local_syms);
-
- file_offset = virt_offset = sizeof (header) + sizeof (progh);
- secth [SECT_HASH].sh_addr = secth [SECT_HASH].sh_offset = file_offset;
- size = sizeof (int) * (2 + hash [0] + hash [1]);
- virt_offset = (file_offset += size);
- secth [SECT_HASH].sh_size = size;
- secth [SECT_DYNSYM].sh_addr = secth [SECT_DYNSYM].sh_offset = file_offset;
- size = sizeof (ElfSymbol) * hash [1];
- virt_offset = (file_offset += size);
- secth [SECT_DYNSYM].sh_size = size;
- secth [SECT_DYNSTR].sh_addr = secth [SECT_DYNSTR].sh_offset = file_offset;
- size = dyn_str_table.data->len;
- virt_offset = (file_offset += size);
- secth [SECT_DYNSTR].sh_size = size;
- file_offset += 4-1;
- file_offset &= ~(4-1);
- secth [SECT_REL_DYN].sh_addr = secth [SECT_REL_DYN].sh_offset = file_offset;
-#ifndef USE_ELF_RELA
- size = sizeof (ElfReloc) * acfg->num_relocs;
-#else
- size = 0;
-#endif
- virt_offset = (file_offset += size);
- secth [SECT_REL_DYN].sh_size = size;
- secth [SECT_RELA_DYN].sh_addr = secth [SECT_RELA_DYN].sh_offset = file_offset;
-#ifdef USE_ELF_RELA
- size = sizeof (ElfRelocA) * acfg->num_relocs;
-#else
- size = 0;
-#endif
- virt_offset = (file_offset += size);
- secth [SECT_RELA_DYN].sh_size = size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_TEXT].sh_addralign);
- virt_offset = file_offset;
- secth [SECT_TEXT].sh_addr = secth [SECT_TEXT].sh_offset = file_offset;
- if (sections [SECT_TEXT]) {
- if (sections [SECT_TEXT]->has_addr) {
- secth [SECT_TEXT].sh_addr = sections [SECT_TEXT]->addr;
- secth [SECT_TEXT].sh_flags &= ~SHF_ALLOC;
- }
- size = sections [SECT_TEXT]->cur_offset;
- secth [SECT_TEXT].sh_size = size;
- file_offset += size;
- }
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_RODATA].sh_addralign);
- virt_offset = file_offset;
- secth [SECT_RODATA].sh_addr = virt_offset;
- secth [SECT_RODATA].sh_offset = file_offset;
- if (sections [SECT_RODATA]) {
- size = sections [SECT_RODATA]->cur_offset;
- secth [SECT_RODATA].sh_size = size;
- file_offset += size;
- virt_offset += size;
- }
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_DYNAMIC].sh_addralign);
- virt_offset = file_offset;
-
- /* .dynamic, .got.plt, .data, .bss here */
- /* Have to increase the virt offset since these go to a separate segment */
- virt_offset += PAGESIZE;
- secth [SECT_DYNAMIC].sh_addr = virt_offset;
- secth [SECT_DYNAMIC].sh_offset = file_offset;
- size = sizeof (dynamic);
- secth [SECT_DYNAMIC].sh_size = size;
- file_offset += size;
- virt_offset += size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_GOT_PLT].sh_addralign);
- virt_offset = ALIGN_TO (virt_offset, secth [SECT_GOT_PLT].sh_addralign);
- secth [SECT_GOT_PLT].sh_addr = virt_offset;
- secth [SECT_GOT_PLT].sh_offset = file_offset;
- size = 3 * TARGET_SIZEOF_VOID_P;
- secth [SECT_GOT_PLT].sh_size = size;
- file_offset += size;
- virt_offset += size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_DATA].sh_addralign);
- virt_offset = ALIGN_TO (virt_offset, secth [SECT_DATA].sh_addralign);
- secth [SECT_DATA].sh_addr = virt_offset;
- secth [SECT_DATA].sh_offset = file_offset;
- if (sections [SECT_DATA]) {
- size = sections [SECT_DATA]->cur_offset;
- secth [SECT_DATA].sh_size = size;
- file_offset += size;
- virt_offset += size;
- }
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_BSS].sh_addralign);
- virt_offset = ALIGN_TO (virt_offset, secth [SECT_BSS].sh_addralign);
- secth [SECT_BSS].sh_addr = virt_offset;
- secth [SECT_BSS].sh_offset = file_offset;
- if (sections [SECT_BSS]) {
- size = sections [SECT_BSS]->cur_offset;
- secth [SECT_BSS].sh_size = size;
- }
-
- /* virtual doesn't matter anymore */
- file_offset = ALIGN_TO (file_offset, secth [SECT_DEBUG_FRAME].sh_addralign);
- secth [SECT_DEBUG_FRAME].sh_offset = file_offset;
- if (sections [SECT_DEBUG_FRAME])
- size = sections [SECT_DEBUG_FRAME]->cur_offset;
- else
- size = 0;
- secth [SECT_DEBUG_FRAME].sh_size = size;
- file_offset += size;
-
- secth [SECT_DEBUG_INFO].sh_offset = file_offset;
- if (sections [SECT_DEBUG_INFO])
- size = sections [SECT_DEBUG_INFO]->cur_offset;
- else
- size = 0;
- secth [SECT_DEBUG_INFO].sh_size = size;
- file_offset += size;
-
- secth [SECT_DEBUG_ABBREV].sh_offset = file_offset;
- if (sections [SECT_DEBUG_ABBREV])
- size = sections [SECT_DEBUG_ABBREV]->cur_offset;
- else
- size = 0;
- secth [SECT_DEBUG_ABBREV].sh_size = size;
- file_offset += size;
-
- secth [SECT_DEBUG_LINE].sh_offset = file_offset;
- if (sections [SECT_DEBUG_LINE])
- size = sections [SECT_DEBUG_LINE]->cur_offset;
- else
- size = 0;
- secth [SECT_DEBUG_LINE].sh_size = size;
- file_offset += size;
-
- secth [SECT_DEBUG_LOC].sh_offset = file_offset;
- if (sections [SECT_DEBUG_LOC])
- size = sections [SECT_DEBUG_LOC]->cur_offset;
- else
- size = 0;
- secth [SECT_DEBUG_LOC].sh_size = size;
- file_offset += size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_SHSTRTAB].sh_addralign);
- secth [SECT_SHSTRTAB].sh_offset = file_offset;
- size = sh_str_table.data->len;
- secth [SECT_SHSTRTAB].sh_size = size;
- file_offset += size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_SYMTAB].sh_addralign);
- secth [SECT_SYMTAB].sh_offset = file_offset;
- size = sizeof (ElfSymbol) * num_local_syms;
- secth [SECT_SYMTAB].sh_size = size;
- file_offset += size;
-
- file_offset = ALIGN_TO (file_offset, secth [SECT_STRTAB].sh_addralign);
- secth [SECT_STRTAB].sh_offset = file_offset;
- size = str_table.data->len;
- secth [SECT_STRTAB].sh_size = size;
- file_offset += size;
-
- for (i = 1; i < SECT_NUM; ++i) {
- if (section_info [i].esize != 0)
- g_assert (secth [i].sh_size % section_info [i].esize == 0);
- }
-
- file_offset += 4-1;
- file_offset &= ~(4-1);
-
- header.e_ident [EI_MAG0] = ELFMAG0;
- header.e_ident [EI_MAG1] = ELFMAG1;
- header.e_ident [EI_MAG2] = ELFMAG2;
- header.e_ident [EI_MAG3] = ELFMAG3;
- header.e_ident [EI_CLASS] = TARGET_SIZEOF_VOID_P == 4 ? ELFCLASS32 : ELFCLASS64;
- header.e_ident [EI_DATA] = ELFDATA2LSB;
- header.e_ident [EI_VERSION] = EV_CURRENT;
- header.e_ident [EI_OSABI] = ELFOSABI_NONE;
- header.e_ident [EI_ABIVERSION] = 0;
- for (i = EI_PAD; i < EI_NIDENT; ++i)
- header.e_ident [i] = 0;
-
- header.e_type = ET_DYN;
-#if defined(TARGET_X86)
- header.e_machine = EM_386;
-#elif defined(TARGET_AMD64)
- header.e_machine = EM_X86_64;
-#elif defined(TARGET_ARM)
- header.e_machine = EM_ARM;
-#else
- g_assert_not_reached ();
-#endif
- header.e_version = 1;
-
- header.e_phoff = sizeof (header);
- header.e_ehsize = sizeof (header);
- header.e_phentsize = sizeof (ElfProgHeader);
- header.e_phnum = 4;
- header.e_entry = secth [SECT_TEXT].sh_addr;
- header.e_shstrndx = SECT_SHSTRTAB;
- header.e_shentsize = sizeof (ElfSectHeader);
- header.e_shnum = SECT_NUM;
- header.e_shoff = file_offset;
-
- /* dynamic data */
- i = 0;
- dynamic [i].d_tag = DT_HASH;
- dynamic [i].d_un.d_val = secth [SECT_HASH].sh_offset;
- ++i;
- dynamic [i].d_tag = DT_STRTAB;
- dynamic [i].d_un.d_val = secth [SECT_DYNSTR].sh_offset;
- ++i;
- dynamic [i].d_tag = DT_SYMTAB;
- dynamic [i].d_un.d_val = secth [SECT_DYNSYM].sh_offset;
- ++i;
- dynamic [i].d_tag = DT_STRSZ;
- dynamic [i].d_un.d_val = dyn_str_table.data->len;
- ++i;
- dynamic [i].d_tag = DT_SYMENT;
- dynamic [i].d_un.d_val = sizeof (ElfSymbol);
- ++i;
-#ifdef USE_ELF_RELA
- dynamic [i].d_tag = DT_RELA;
- dynamic [i].d_un.d_val = secth [SECT_RELA_DYN].sh_offset;
- ++i;
- dynamic [i].d_tag = DT_RELASZ;
- dynamic [i].d_un.d_val = secth [SECT_RELA_DYN].sh_size;
- ++i;
- dynamic [i].d_tag = DT_RELAENT;
- dynamic [i].d_un.d_val = sizeof (ElfRelocA);
- ++i;
-#else
- dynamic [i].d_tag = DT_REL;
- dynamic [i].d_un.d_val = secth [SECT_REL_DYN].sh_offset;
- ++i;
- dynamic [i].d_tag = DT_RELSZ;
- dynamic [i].d_un.d_val = secth [SECT_REL_DYN].sh_size;
- ++i;
- dynamic [i].d_tag = DT_RELENT;
- dynamic [i].d_un.d_val = sizeof (ElfReloc);
- ++i;
-#endif
- dynamic [i].d_tag = DT_RELCOUNT;
- dynamic [i].d_un.d_val = acfg->num_relocs;
- ++i;
-
- /* Program header */
- memset (&progh, 0, sizeof (progh));
- progh [0].p_type = PT_LOAD;
- progh [0].p_filesz = progh [0].p_memsz = secth [SECT_DYNAMIC].sh_offset;
- progh [0].p_align = 4096;
- progh [0].p_flags = 5;
-
- progh [1].p_type = PT_LOAD;
- progh [1].p_offset = secth [SECT_DYNAMIC].sh_offset;
- progh [1].p_vaddr = progh [1].p_paddr = secth [SECT_DYNAMIC].sh_addr;
- progh [1].p_filesz = secth [SECT_BSS].sh_offset - secth [SECT_DYNAMIC].sh_offset;
- progh [1].p_memsz = secth [SECT_BSS].sh_addr + secth [SECT_BSS].sh_size - secth [SECT_DYNAMIC].sh_addr;
- progh [1].p_align = 4096;
- progh [1].p_flags = 6;
-
- progh [2].p_type = PT_DYNAMIC;
- progh [2].p_offset = secth [SECT_DYNAMIC].sh_offset;
- progh [2].p_vaddr = progh [2].p_paddr = secth [SECT_DYNAMIC].sh_addr;
- progh [2].p_filesz = progh [2].p_memsz = secth [SECT_DYNAMIC].sh_size;
- progh [2].p_align = TARGET_SIZEOF_VOID_P;
- progh [2].p_flags = 6;
-
- progh [3].p_type = PT_GNU_STACK;
- progh [3].p_offset = secth [SECT_DYNAMIC].sh_offset;
- progh [3].p_vaddr = progh [3].p_paddr = secth [SECT_DYNAMIC].sh_addr;
- progh [3].p_filesz = progh [3].p_memsz = secth [SECT_DYNAMIC].sh_size;
- progh [3].p_align = TARGET_SIZEOF_VOID_P;
- progh [3].p_flags = 6;
-
- /* Compute the addresses of the bin sections, so relocation can be done */
- for (i = 0; i < SECT_NUM; ++i) {
- if (sections [i]) {
- sections [i]->file_offset = secth [i].sh_offset;
- sections [i]->virt_offset = secth [i].sh_addr;
- }
- }
-
- reloc_symbols (acfg, dynsym, secth, &dyn_str_table, TRUE);
- reloc_symbols (acfg, symtab, secth, &str_table, FALSE);
- relocs = resolve_relocations (acfg);
-
- if (!acfg->fp) {
- acfg->out_buf_size = file_offset + sizeof (secth);
- acfg->out_buf = (guint8 *)g_malloc (acfg->out_buf_size);
- }
-
- bin_writer_fwrite (acfg, &header, sizeof (header), 1);
- bin_writer_fwrite (acfg, &progh, sizeof (progh), 1);
- bin_writer_fwrite (acfg, hash, sizeof (int) * (hash [0] + hash [1] + 2), 1);
- bin_writer_fwrite (acfg, dynsym, sizeof (ElfSymbol) * hash [1], 1);
- bin_writer_fwrite (acfg, dyn_str_table.data->str, dyn_str_table.data->len, 1);
- /* .rel.dyn */
- bin_writer_fseek (acfg, secth [SECT_REL_DYN].sh_offset);
- bin_writer_fwrite (acfg, relocs, sizeof (ElfReloc), acfg->num_relocs);
-
- /* .rela.dyn */
- bin_writer_fseek (acfg, secth [SECT_RELA_DYN].sh_offset);
- bin_writer_fwrite (acfg, relocs, secth [SECT_RELA_DYN].sh_size, 1);
-
- /* .text */
- if (sections [SECT_TEXT]) {
- bin_writer_fseek (acfg, secth [SECT_TEXT].sh_offset);
- bin_writer_fwrite (acfg, sections [SECT_TEXT]->data, sections [SECT_TEXT]->cur_offset, 1);
- }
- /* .rodata */
- if (sections [SECT_RODATA]) {
- bin_writer_fseek (acfg, secth [SECT_RODATA].sh_offset);
- bin_writer_fwrite (acfg, sections [SECT_RODATA]->data, sections [SECT_RODATA]->cur_offset, 1);
- }
- /* .dynamic */
- bin_writer_fseek (acfg, secth [SECT_DYNAMIC].sh_offset);
- bin_writer_fwrite (acfg, dynamic, sizeof (dynamic), 1);
-
- /* .got.plt */
- size = secth [SECT_DYNAMIC].sh_addr;
- bin_writer_fseek (acfg, secth [SECT_GOT_PLT].sh_offset);
- bin_writer_fwrite (acfg, &size, sizeof (size), 1);
-
- /* normal sections */
- for (i = 0; i < sizeof (normal_sections) / sizeof (normal_sections [0]); ++i) {
- int sect = normal_sections [i];
-
- if (sections [sect]) {
- bin_writer_fseek (acfg, secth [sect].sh_offset);
- bin_writer_fwrite (acfg, sections [sect]->data, sections [sect]->cur_offset, 1);
- }
- }
-
- bin_writer_fseek (acfg, secth [SECT_SHSTRTAB].sh_offset);
- bin_writer_fwrite (acfg, sh_str_table.data->str, sh_str_table.data->len, 1);
- bin_writer_fseek (acfg, secth [SECT_SYMTAB].sh_offset);
- bin_writer_fwrite (acfg, symtab, sizeof (ElfSymbol) * num_local_syms, 1);
- bin_writer_fseek (acfg, secth [SECT_STRTAB].sh_offset);
- bin_writer_fwrite (acfg, str_table.data->str, str_table.data->len, 1);
- /*g_print ("file_offset %d vs %d\n", file_offset, ftell (file));*/
- /*g_assert (file_offset >= ftell (file));*/
- bin_writer_fseek (acfg, file_offset);
- bin_writer_fwrite (acfg, §h, sizeof (secth), 1);
-
- if (acfg->fp)
- fclose (acfg->fp);
-
- return 0;
-}
-
-#endif /* USE_ELF_WRITER */
-
-#endif /* USE_BIN_WRITER */
-
/* ASM WRITER */
static void
#endif
}
-#ifndef USE_BIN_WRITER
static void
asm_writer_emit_alignment_fill (MonoImageWriter *acfg, int size, int fill)
{
asm_writer_emit_alignment (acfg, size);
#endif
}
-#endif
static void
asm_writer_emit_pointer_unaligned (MonoImageWriter *acfg, const char *target)
void
mono_img_writer_emit_start (MonoImageWriter *acfg)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_start (acfg);
- else
- asm_writer_emit_start (acfg);
-#else
asm_writer_emit_start (acfg);
-#endif
}
void
mono_img_writer_emit_section_change (MonoImageWriter *acfg, const char *section_name, int subsection_index)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_section_change (acfg, section_name, subsection_index);
- else
- asm_writer_emit_section_change (acfg, section_name, subsection_index);
-#else
asm_writer_emit_section_change (acfg, section_name, subsection_index);
-#endif
acfg->current_section = section_name;
acfg->current_subsection = subsection_index;
void
mono_img_writer_set_section_addr (MonoImageWriter *acfg, guint64 addr)
{
-#ifdef USE_BIN_WRITER
- if (!acfg->use_bin_writer)
- NOT_IMPLEMENTED;
- else
- bin_writer_set_section_addr (acfg, addr);
-#else
NOT_IMPLEMENTED;
-#endif
}
void
mono_img_writer_emit_global (MonoImageWriter *acfg, const char *name, gboolean func)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_global (acfg, name, func);
- else
- asm_writer_emit_global (acfg, name, func);
-#else
asm_writer_emit_global (acfg, name, func);
-#endif
}
void
mono_img_writer_emit_local_symbol (MonoImageWriter *acfg, const char *name, const char *end_label, gboolean func)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_local_symbol (acfg, name, end_label, func);
- else
- asm_writer_emit_local_symbol (acfg, name, end_label, func);
-#else
asm_writer_emit_local_symbol (acfg, name, end_label, func);
-#endif
}
void
mono_img_writer_emit_symbol_size (MonoImageWriter *acfg, const char *name, const char *end_label)
{
- if (!acfg->use_bin_writer)
- asm_writer_emit_symbol_size (acfg, name, end_label);
+ asm_writer_emit_symbol_size (acfg, name, end_label);
}
void
mono_img_writer_emit_label (MonoImageWriter *acfg, const char *name)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_label (acfg, name);
- else
- asm_writer_emit_label (acfg, name);
-#else
asm_writer_emit_label (acfg, name);
-#endif
}
void
mono_img_writer_emit_bytes (MonoImageWriter *acfg, const guint8* buf, int size)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_bytes (acfg, buf, size);
- else
- asm_writer_emit_bytes (acfg, buf, size);
-#else
asm_writer_emit_bytes (acfg, buf, size);
-#endif
}
void
mono_img_writer_emit_string (MonoImageWriter *acfg, const char *value)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_string (acfg, value);
- else
- asm_writer_emit_string (acfg, value);
-#else
asm_writer_emit_string (acfg, value);
-#endif
}
void
mono_img_writer_emit_line (MonoImageWriter *acfg)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_line (acfg);
- else
- asm_writer_emit_line (acfg);
-#else
- asm_writer_emit_line (acfg);
-#endif
+ asm_writer_emit_line (acfg);
}
void
mono_img_writer_emit_alignment (MonoImageWriter *acfg, int size)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_alignment (acfg, size);
- else
- asm_writer_emit_alignment (acfg, size);
-#else
asm_writer_emit_alignment (acfg, size);
-#endif
}
void
mono_img_writer_emit_alignment_fill (MonoImageWriter *acfg, int size, int fill)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_alignment (acfg, size);
- else
- asm_writer_emit_alignment (acfg, size);
-#else
asm_writer_emit_alignment_fill (acfg, size, fill);
-#endif
}
void
mono_img_writer_emit_pointer_unaligned (MonoImageWriter *acfg, const char *target)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_pointer_unaligned (acfg, target);
- else
- asm_writer_emit_pointer_unaligned (acfg, target);
-#else
asm_writer_emit_pointer_unaligned (acfg, target);
-#endif
}
void
mono_img_writer_emit_pointer (MonoImageWriter *acfg, const char *target)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_pointer (acfg, target);
- else
- asm_writer_emit_pointer (acfg, target);
-#else
asm_writer_emit_pointer (acfg, target);
-#endif
}
void
mono_img_writer_emit_int16 (MonoImageWriter *acfg, int value)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_int16 (acfg, value);
- else
- asm_writer_emit_int16 (acfg, value);
-#else
asm_writer_emit_int16 (acfg, value);
-#endif
}
void
mono_img_writer_emit_int32 (MonoImageWriter *acfg, int value)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_int32 (acfg, value);
- else
- asm_writer_emit_int32 (acfg, value);
-#else
asm_writer_emit_int32 (acfg, value);
-#endif
}
void
mono_img_writer_emit_symbol (MonoImageWriter *acfg, const char *symbol)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_symbol (acfg, symbol);
- else
- asm_writer_emit_symbol (acfg, symbol);
-#else
asm_writer_emit_symbol (acfg, symbol);
-#endif
}
void
mono_img_writer_emit_symbol_diff (MonoImageWriter *acfg, const char *end, const char* start, int offset)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_symbol_diff (acfg, end, start, offset);
- else
- asm_writer_emit_symbol_diff (acfg, end, start, offset);
-#else
asm_writer_emit_symbol_diff (acfg, end, start, offset);
-#endif
}
void
mono_img_writer_emit_zero_bytes (MonoImageWriter *acfg, int num)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_zero_bytes (acfg, num);
- else
- asm_writer_emit_zero_bytes (acfg, num);
-#else
asm_writer_emit_zero_bytes (acfg, num);
-#endif
}
int
mono_img_writer_emit_writeout (MonoImageWriter *acfg)
{
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- return bin_writer_emit_writeout (acfg);
- else
- return asm_writer_emit_writeout (acfg);
-#else
- return asm_writer_emit_writeout (acfg);
-#endif
+ return asm_writer_emit_writeout (acfg);
}
void
void
mono_img_writer_emit_reloc (MonoImageWriter *acfg, int reloc_type, const char *symbol, int addend)
{
- /* This is only supported by the bin writer */
-#ifdef USE_BIN_WRITER
- if (acfg->use_bin_writer)
- bin_writer_emit_reloc (acfg, reloc_type, symbol, addend);
- else
- g_assert_not_reached ();
-#else
- g_assert_not_reached ();
-#endif
+ g_assert_not_reached ();
}
/*
void
mono_img_writer_emit_unset_mode (MonoImageWriter *acfg)
{
- if (!acfg->use_bin_writer)
- asm_writer_emit_unset_mode (acfg);
+ asm_writer_emit_unset_mode (acfg);
}
/*
guint8*
mono_img_writer_get_output (MonoImageWriter *acfg, guint32 *size)
{
-#ifdef USE_BIN_WRITER
- guint8 *buf;
-
- g_assert (acfg->use_bin_writer);
-
- buf = acfg->out_buf;
- *size = acfg->out_buf_size;
- acfg->out_buf = NULL;
- return buf;
-#else
g_assert_not_reached ();
return NULL;
-#endif
-}
-
-/*
- * Return whenever the binary writer is supported on this platform.
- */
-gboolean
-mono_bin_writer_supported (void)
-{
-#ifdef USE_BIN_WRITER
- return TRUE;
-#else
- return FALSE;
-#endif
}
/*
* mono_img_writer_create:
*
- * Create an image writer writing to FP. If USE_BIN_WRITER is TRUE, FP can be NULL,
- * in this case the image writer will write to a memory buffer obtainable by calling
- * mono_img_writer_get_output ().
+ * Create an image writer writing to FP.
*/
MonoImageWriter*
-mono_img_writer_create (FILE *fp, gboolean use_bin_writer)
+mono_img_writer_create (FILE *fp)
{
MonoImageWriter *w = g_new0 (MonoImageWriter, 1);
-
-#ifndef USE_BIN_WRITER
- g_assert (!use_bin_writer);
-#endif
- if (!use_bin_writer)
- g_assert (fp);
+ g_assert (fp);
w->fp = fp;
- w->use_bin_writer = use_bin_writer;
w->mempool = mono_mempool_new ();
return w;
mono_img_writer_subsections_supported (MonoImageWriter *acfg)
{
#ifdef TARGET_ASM_APPLE
- return acfg->use_bin_writer;
+ return FALSE;
#else
return TRUE;
#endif
projects / platform / upstream / dotnet / runtime.git / commitdiff