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Make build_got_entries more target independent

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Factor most of common logic between targets in build_got_entries by
defining target specific info into structures in the backends.
This commit is contained in:
Thomas Preud'homme 2016-11-12 23:16:07 +08:00
parent 523b55d82d
commit 1c811a4d1d
11 changed files with 184 additions and 216 deletions
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1
arm-gen.c
View File

@ -138,6 +138,7 @@ enum {
#define R_DATA_32 R_ARM_ABS32
#define R_DATA_PTR R_ARM_ABS32
#define R_JMP_SLOT R_ARM_JUMP_SLOT
#define R_GLOB_DAT R_ARM_GLOB_DAT
#define R_COPY R_ARM_COPY
#define ELF_START_ADDR 0x00008000

54
arm-link.c
View File

@ -1,6 +1,30 @@
#include "tcc.h"
#define HAVE_SECTION_RELOC
ST_DATA struct reloc_info relocs_info[] = {
INIT_RELOC_INFO (R_ARM_PC24, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_CALL, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_JUMP24, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_PLT32, 1, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_THM_PC22, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_THM_JUMP24, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_MOVT_ABS, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_MOVW_ABS_NC, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_THM_MOVT_ABS, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_THM_MOVW_ABS_NC, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_PREL31, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_ABS32, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_REL32, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_GOTPC, 0, BUILD_GOT_ONLY, 0)
INIT_RELOC_INFO (R_ARM_GOTOFF, 0, BUILD_GOT_ONLY, 0)
INIT_RELOC_INFO (R_ARM_GOT32, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_COPY, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_V4BX, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_GLOB_DAT, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_JUMP_SLOT, 1, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_ARM_NONE, 0, NO_GOTPLT_ENTRY, 0)
};
void relocate_init(Section *sr) {}
void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, addr_t val)
@ -19,8 +43,7 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, add
{
int x, is_thumb, is_call, h, blx_avail, is_bl, th_ko;
x = (*(int *) ptr) & 0xffffff;
if (sym->st_shndx == SHN_UNDEF ||
s1->output_type == TCC_OUTPUT_MEMORY)
if (sym->st_shndx == SHN_UNDEF || sym->st_shndx == SHN_ABS)
val = s1->plt->sh_addr;
#ifdef DEBUG_RELOC
printf ("reloc %d: x=0x%x val=0x%x ", type, x, val);
@ -89,6 +112,33 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, add
(val < plt->sh_addr + plt->data_offset);
is_call = (type == R_ARM_THM_PC22);
if (!to_thumb && !to_plt && !is_call) {
int index;
uint8_t *p;
char *name, buf[1024];
Section *text_section;
name = (char *) symtab_section->link->data + sym->st_name;
text_section = s1->sections[sym->st_shndx];
/* Modify reloc to target a thumb stub to switch to ARM */
snprintf(buf, sizeof(buf), "%s_from_thumb", name);
index = put_elf_sym(symtab_section,
text_section->data_offset + 1,
sym->st_size, sym->st_info, 0,
sym->st_shndx, buf);
to_thumb = 1;
val = text_section->data_offset + 1;
rel->r_info = ELFW(R_INFO)(index, type);
/* Create a thumb stub function to switch to ARM mode */
put_elf_reloc(symtab_section, text_section,
text_section->data_offset + 4, R_ARM_JUMP24,
sym_index);
p = section_ptr_add(text_section, 8);
write32le(p, 0x4778); /* bx pc */
write32le(p+2, 0x46c0); /* nop */
write32le(p+4, 0xeafffffe); /* b $sym */
}
/* Compute final offset */
if (to_plt && !is_call) /* Point to 1st instr of Thumb stub */
x -= 4;

1
arm64-gen.c
View File

@ -48,6 +48,7 @@
#define R_DATA_32 R_AARCH64_ABS32
#define R_DATA_PTR R_AARCH64_ABS64
#define R_JMP_SLOT R_AARCH64_JUMP_SLOT
#define R_GLOB_DAT R_AARCH64_GLOB_DAT
#define R_COPY R_AARCH64_COPY
#define ELF_START_ADDR 0x00400000

19
arm64-link.c
View File

@ -1,6 +1,23 @@
#include "tcc.h"
#define HAVE_SECTION_RELOC
ST_DATA struct reloc_info relocs_info[] = {
INIT_RELOC_INFO (R_AARCH64_ABS32, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_ABS64, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G0_NC, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G1_NC, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G2_NC, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_MOVW_UABS_G3, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_ADR_PREL_PG_HI21, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_ADD_ABS_LO12_NC, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_JUMP26, 1, AUTO_GOTPLT_ENTRY, 1)
INIT_RELOC_INFO (R_AARCH64_CALL26, 1, AUTO_GOTPLT_ENTRY, 1)
INIT_RELOC_INFO (R_AARCH64_ADR_GOT_PAGE, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_LD64_GOT_LO12_NC, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_GLOB_DAT, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_AARCH64_JUMP_SLOT, 1, NO_GOTPLT_ENTRY, 0)
};
void relocate_init(Section *sr) {}
void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, addr_t val)
@ -51,7 +68,7 @@ void relocate(TCCState *s1, ElfW_Rel *rel, int type, char *ptr, addr_t addr, add
/* This check must match the one in build_got_entries, testing
if we really need a PLT slot. */
if (sym->st_shndx == SHN_UNDEF ||
s1->output_type == TCC_OUTPUT_MEMORY)
sym->st_shndx == SHN_ABS)
/* We've put the PLT slot offset into r_addend when generating
it, and that's what we must use as relocation value (adjusted
by section offset of course). */

1
c67-gen.c
View File

@ -117,6 +117,7 @@ enum {
#define R_DATA_32 R_C60_32
#define R_DATA_PTR R_C60_32
#define R_JMP_SLOT R_C60_JMP_SLOT
#define R_GLOB_DAT R_C60_GLOB_DAT
#define R_COPY R_C60_COPY
#define ELF_START_ADDR 0x00000400

1
i386-gen.c
View File

@ -82,6 +82,7 @@ enum {
#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 ELF_START_ADDR 0x08048000

13
i386-link.c
View File

@ -2,6 +2,19 @@
#define HAVE_SECTION_RELOC
static ElfW_Rel *qrel; /* ptr to next reloc entry reused */
ST_DATA struct reloc_info relocs_info[] = {
INIT_RELOC_INFO (R_386_32, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_PC32, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_PLT32, 1, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_GLOB_DAT, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_JMP_SLOT, 1, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_GOTPC, 0, BUILD_GOT_ONLY, 0)
INIT_RELOC_INFO (R_386_GOTOFF, 0, BUILD_GOT_ONLY, 0)
INIT_RELOC_INFO (R_386_GOT32, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_GOT32X, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_16, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_386_PC16, 1, AUTO_GOTPLT_ENTRY, 0)
};
void relocate_init(Section *sr)
{

20
tcc.h
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@ -1305,6 +1305,26 @@ typedef struct {
unsigned int n_value; /* value of symbol */
} Stab_Sym;
/* Wether to generate a GOT/PLT entry and when. NO_GOTPLT_ENTRY is first so
that unknown relocation don't create a GOT or PLT entry */
enum gotplt_entry {
NO_GOTPLT_ENTRY, /* never generate (eg. GLOB_DAT & JMP_SLOT relocs) */
BUILD_GOT_ONLY, /* only build GOT (eg. TPOFF relocs) */
AUTO_GOTPLT_ENTRY, /* generate if sym is UNDEF */
ALWAYS_GOTPLT_ENTRY /* always generate (eg. PLTOFF relocs) */
};
/* what kind of relocation is it */
struct reloc_info {
int code_reloc; /* if false, that's a data reloc */
int gotplt_entry; /* wether and when to create a GOT/PLT entry */
int pltoff_addend; /* wether to store the PLT offset in addend */
};
#define INIT_RELOC_INFO(rtype, code_reloc, gotplt_entry, pltoff_addend) \
[rtype] = {code_reloc, gotplt_entry, pltoff_addend},
ST_DATA struct reloc_info relocs_info[];
ST_DATA Section *text_section, *data_section, *bss_section; /* predefined sections */
ST_DATA Section *cur_text_section; /* current section where function code is generated */
#ifdef CONFIG_TCC_ASM

275
tccelf.c
View File

@ -1022,6 +1022,7 @@ ST_FUNC void build_got_entries(TCCState *s1)
ElfW_Rel *rel;
ElfW(Sym) *sym;
int i, type, reloc_type, sym_index;
unsigned long ofs;
for(i = 1; i < s1->nb_sections; i++) {
s = s1->sections[i];
@ -1034,222 +1035,70 @@ ST_FUNC void build_got_entries(TCCState *s1)
type = ELFW(R_TYPE)(rel->r_info);
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
switch(type) {
#if defined(TCC_TARGET_I386)
case R_386_PC16:
case R_386_PC32:
case R_386_GOT32:
case R_386_GOT32X:
case R_386_GOTOFF:
case R_386_GOTPC:
case R_386_PLT32:
if (sym->st_shndx != SHN_UNDEF && type != R_386_GOT32 &&
type != R_386_GOT32X && type != R_386_GOTOFF &&
type != R_386_GOTPC && type != R_386_PLT32)
break;
if (relocs_info[type].gotplt_entry == NO_GOTPLT_ENTRY)
continue;
if (!s1->got)
build_got(s1);
/* Proceed with PLT/GOT [entry] creation if any of the following
condition is met:
- it is an undefined reference (dynamic relocation needed)
- symbol is absolute (probably created by tcc_add_symbol)
- relocation requires a PLT/GOT (BUILD_GOTPLT_ENTRY or
ALWAYS_GOTPLT_ENTRY). */
if (sym->st_shndx != SHN_UNDEF &&
sym->st_shndx != SHN_ABS &&
relocs_info[type].gotplt_entry == AUTO_GOTPLT_ENTRY)
continue;
if (type != R_386_GOTOFF && type != R_386_GOTPC) {
/* look at the symbol got offset. If none, then add one */
if (type == R_386_GOT32 || type == R_386_GOT32X)
reloc_type = R_386_GLOB_DAT;
else
reloc_type = R_386_JMP_SLOT;
put_got_entry(s1, reloc_type, sym->st_size, sym->st_info,
sym_index);
}
break;
#elif defined(TCC_TARGET_ARM)
case R_ARM_PC24:
case R_ARM_CALL:
case R_ARM_JUMP24:
case R_ARM_PLT32:
case R_ARM_THM_PC22:
case R_ARM_MOVT_ABS:
case R_ARM_MOVW_ABS_NC:
case R_ARM_THM_MOVT_ABS:
case R_ARM_THM_MOVW_ABS_NC:
case R_ARM_PREL31:
case R_ARM_REL32:
case R_ARM_GOTPC:
case R_ARM_GOTOFF:
case R_ARM_GOT32:
case R_ARM_V4BX:
if (sym->st_shndx != SHN_UNDEF && type != R_ARM_GOT32 &&
type != R_ARM_GOTOFF && type != R_ARM_GOTPC &&
type != R_ARM_PLT32)
break;
if (!s1->got)
build_got(s1);
if (type != R_ARM_GOTOFF && type != R_ARM_GOTPC
&& (sym->st_shndx == SHN_UNDEF
|| s1->output_type == TCC_OUTPUT_MEMORY)) {
unsigned long ofs;
/* look at the symbol got offset. If none, then add one */
if (type == R_ARM_GOT32 || type == R_ARM_MOVT_ABS ||
type == R_ARM_MOVW_ABS_NC ||
type == R_ARM_THM_MOVT_ABS ||
type == R_ARM_THM_MOVW_ABS_NC || type == R_ARM_ABS32 ||
type == R_ARM_REL32)
reloc_type = R_ARM_GLOB_DAT;
else
reloc_type = R_ARM_JUMP_SLOT;
ofs = put_got_entry(s1, reloc_type, sym->st_size,
sym->st_info, sym_index);
#ifdef DEBUG_RELOC
printf ("maybegot: %s, %d, %d --> ofs=0x%x\n",
(char *) symtab_section->link->data + sym->st_name,
type, sym->st_shndx, ofs);
#endif
if (type == R_ARM_PC24 || type == R_ARM_CALL ||
type == R_ARM_JUMP24 || type == R_ARM_PLT32) {
addr_t *ptr = (addr_t*)(s1->sections[s->sh_info]->data
+ rel->r_offset);
/* x must be signed! */
int x = *ptr & 0xffffff;
x = (x << 8) >> 8;
x <<= 2;
x += ofs;
x >>= 2;
#ifdef DEBUG_RELOC
printf ("insn=0x%x --> 0x%x (x==0x%x)\n", *ptr,
(*ptr & 0xff000000) | x, x);
#endif
*ptr = (*ptr & 0xff000000) | x;
}
}
break;
case R_ARM_THM_JUMP24:
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
/* We are relocating a jump from thumb code to arm code */
if (sym->st_shndx != SHN_UNDEF && !(sym->st_value & 1)) {
int index;
uint8_t *p;
char *name, buf[1024];
Section *text_section;
name = (char *) symtab_section->link->data + sym->st_name;
text_section = s1->sections[sym->st_shndx];
/* Modify reloc to target a thumb stub to switch to ARM */
snprintf(buf, sizeof(buf), "%s_from_thumb", name);
index = put_elf_sym(symtab_section,
text_section->data_offset + 1,
sym->st_size, sym->st_info, 0,
sym->st_shndx, buf);
rel->r_info = ELFW(R_INFO)(index, type);
/* Create a thumb stub fonction to switch to ARM mode */
put_elf_reloc(symtab_section, text_section,
text_section->data_offset + 4, R_ARM_JUMP24,
sym_index);
p = section_ptr_add(text_section, 8);
write32le(p, 0x4778); /* bx pc */
write32le(p+2, 0x46c0); /* nop */
write32le(p+4, 0xeafffffe); /* b $sym */
}
#elif defined(TCC_TARGET_ARM64)
//xx Other cases may be required here:
case R_AARCH64_ADR_GOT_PAGE:
case R_AARCH64_LD64_GOT_LO12_NC:
if (!s1->got)
build_got(s1);
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
reloc_type = R_AARCH64_GLOB_DAT;
put_got_entry(s1, reloc_type, sym->st_size, sym->st_info,
sym_index);
break;
case R_AARCH64_JUMP26:
case R_AARCH64_CALL26:
if (!s1->got)
build_got(s1);
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
if (sym->st_shndx == SHN_UNDEF ||
s1->output_type == TCC_OUTPUT_MEMORY) {
unsigned long ofs;
reloc_type = R_AARCH64_JUMP_SLOT;
ofs = put_got_entry(s1, reloc_type, sym->st_size,
sym->st_info, sym_index);
/* We store the place of the generated PLT slot
in our addend. */
rel->r_addend += ofs;
}
break;
#elif defined(TCC_TARGET_C67)
case R_C60_GOT32:
case R_C60_GOTOFF:
case R_C60_GOTPC:
case R_C60_PLT32:
if (!s1->got)
build_got(s1);
if (type == R_C60_GOT32 || type == R_C60_PLT32) {
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
/* look at the symbol got offset. If none, then add one */
if (type == R_C60_GOT32)
reloc_type = R_C60_GLOB_DAT;
else
reloc_type = R_C60_JMP_SLOT;
put_got_entry(s1, reloc_type, sym->st_size, sym->st_info,
sym_index);
}
break;
#elif defined(TCC_TARGET_X86_64)
case R_X86_64_32:
case R_X86_64_32S:
case R_X86_64_64:
case R_X86_64_PC32:
case R_X86_64_GOT32:
case R_X86_64_GOTTPOFF:
case R_X86_64_GOTPCREL:
case R_X86_64_GOTPCRELX:
case R_X86_64_REX_GOTPCRELX:
case R_X86_64_PLT32:
sym_index = ELFW(R_SYM)(rel->r_info);
sym = &((ElfW(Sym) *)symtab_section->data)[sym_index];
if ((type == R_X86_64_32 || type == R_X86_64_32S ||
type == R_X86_64_64 || type == R_X86_64_PC32) &&
sym->st_shndx != SHN_UNDEF)
break;
if (type == R_X86_64_PLT32 &&
ELFW(ST_VISIBILITY)(sym->st_other) != STV_DEFAULT) {
rel->r_info = ELFW(R_INFO)(sym_index, R_X86_64_PC32);
break;
}
if (!s1->got)
build_got(s1);
if (type != R_X86_64_GOTTPOFF) {
unsigned long ofs;
/* look at the symbol got offset. If none, then add one */
if (type == R_X86_64_GOT32 || type == R_X86_64_GOTPCREL ||
type == R_X86_64_GOTPCRELX ||
type == R_X86_64_REX_GOTPCRELX ||
type == R_X86_64_32 || type == R_X86_64_32S ||
type == R_X86_64_64)
reloc_type = R_X86_64_GLOB_DAT;
else
reloc_type = R_X86_64_JUMP_SLOT;
ofs = put_got_entry(s1, reloc_type, sym->st_size,
sym->st_info, sym_index);
if (type == R_X86_64_PLT32)
/* We store the place of the generated PLT slot
in our addend. */
rel->r_addend += ofs;
}
break;
#else
#error unsupported CPU
#endif
default:
break;
#ifdef TCC_TARGET_X86_64
if (type == R_X86_64_PLT32 &&
ELFW(ST_VISIBILITY)(sym->st_other) != STV_DEFAULT) {
rel->r_info = ELFW(R_INFO)(sym_index, R_X86_64_PC32);
continue;
}
#endif
if (!s1->got)
build_got(s1);
if (relocs_info[type].gotplt_entry == BUILD_GOT_ONLY)
continue;
if (relocs_info[type].code_reloc)
reloc_type = R_JMP_SLOT;
else
reloc_type = R_GLOB_DAT;
ofs = put_got_entry(s1, reloc_type, sym->st_size, sym->st_info,
sym_index);
#ifdef DEBUG_RELOC
printf ("maybegot: %s, %d, %d --> ofs=0x%x\n",
(char *) symtab_section->link->data + sym->st_name, type,
sym->st_shndx, ofs);
#endif
#if defined (TCC_TARGET_X86_64) || defined(TCC_TARGET_ARM64)
/* We store the place of the generated PLT slot in our addend. */
if (relocs_info[type].pltoff_addend)
rel->r_addend += ofs;
#elif defined (TCC_TARGET_ARM)
if (type == R_ARM_PC24 || type == R_ARM_CALL ||
type == R_ARM_JUMP24 || type == R_ARM_PLT32) {
addr_t *ptr = (addr_t*)(s1->sections[s->sh_info]->data
+ rel->r_offset);
/* x must be signed! */
int x = *ptr & 0xffffff;
x = (x << 8) >> 8;
x <<= 2;
x += ofs;
x >>= 2;
#ifdef DEBUG_RELOC
printf ("insn=0x%x --> 0x%x (x==0x%x)\n", *ptr,
(*ptr & 0xff000000) | x, x);
#endif
*ptr = (*ptr & 0xff000000) | x;
}
#endif
}
}
}

1
x86_64-gen.c
View File

@ -110,6 +110,7 @@ enum {
#define R_DATA_32 R_X86_64_32
#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 ELF_START_ADDR 0x400000

14
x86_64-link.c
View File

@ -2,6 +2,20 @@
#define HAVE_SECTION_RELOC
static ElfW_Rel *qrel; /* ptr to next reloc entry reused */
ST_DATA struct reloc_info relocs_info[] = {
INIT_RELOC_INFO (R_X86_64_64, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_32, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_32S, 0, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_PC32, 1, AUTO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_PLT32, 1, ALWAYS_GOTPLT_ENTRY, 1)
INIT_RELOC_INFO (R_X86_64_GLOB_DAT, 0, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_JUMP_SLOT, 1, NO_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_GOTPCREL, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_GOTPCRELX, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_REX_GOTPCRELX, 0, ALWAYS_GOTPLT_ENTRY, 0)
INIT_RELOC_INFO (R_X86_64_GOTTPOFF, 0, BUILD_GOT_ONLY, 0)
INIT_RELOC_INFO (R_X86_64_GOT32, 0, ALWAYS_GOTPLT_ENTRY, 0)
};
void relocate_init(Section *sr)
{