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util/cbfstool: Support AMD64 rmodules 

Add support for 64bit rmodule, as required for relocatable
ramstage on x86_64.

Change-Id: I7fbb3b4c0f76ce82c090b5f16f67a728b6bf94a5
Signed-off-by: Patrick Rudolph <siro@das-labor.org>
Reviewed-on: https://review.coreboot.org/c/29874
Reviewed-by: Philipp Deppenwiese <zaolin.daisuki@gmail.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
This commit is contained in:
Patrick Rudolph 2018-11-26 15:54:21 +01:00 committed by Patrick Georgi
parent f7fdc3a5ab
commit 565bebe0b3
3 changed files with 72 additions and 0 deletions
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37
util/cbfstool/elf.h
View File

@ -1148,6 +1148,43 @@ typedef struct
/* Keep this the last entry. */
#define R_386_NUM 38
/* AMD64 specific definitions. */
#define R_AMD64_NONE 0 /* relocation types */
#define R_AMD64_64 1
#define R_AMD64_PC32 2
#define R_AMD64_GOT32 3
#define R_AMD64_PLT32 4
#define R_AMD64_COPY 5
#define R_AMD64_GLOB_DAT 6
#define R_AMD64_JUMP_SLOT 7
#define R_AMD64_RELATIVE 8
#define R_AMD64_GOTPCREL 9
#define R_AMD64_32 10
#define R_AMD64_32S 11
#define R_AMD64_16 12
#define R_AMD64_PC16 13
#define R_AMD64_8 14
#define R_AMD64_PC8 15
#define R_AMD64_DTPMOD64 16
#define R_AMD64_DTPOFF64 17
#define R_AMD64_TPOFF64 18
#define R_AMD64_TLSGD 19
#define R_AMD64_TLSLD 20
#define R_AMD64_DTPOFF32 21
#define R_AMD64_GOTTPOFF 22
#define R_AMD64_TPOFF32 23
#define R_AMD64_PC64 24
#define R_AMD64_GOTOFF64 25
#define R_AMD64_GOTPC32 26
#define R_AMD64_GOT64 27 /* reserved for future expansion */
#define R_AMD64_GOTPCREL64 28 /* reserved for future expansion */
#define R_AMD64_GOTPC64 29 /* reserved for future expansion */
#define R_AMD64_GOTPLT64 30 /* reserved for future expansion */
#define R_AMD64_PLTOFF64 31 /* reserved for future expansion */
#define R_AMD64_SIZE32 32
#define R_AMD64_SIZE64 33
#define R_AMD64_NUM 34
/* SUN SPARC specific definitions. */
/* Legal values for ST_TYPE subfield of st_info (symbol type). */

3
util/cbfstool/elfheaders.c
View File

@ -1072,6 +1072,9 @@ static void fixup_relocations(struct elf_writer *ew)
case EM_386:
type = R_386_32;
break;
case EM_X86_64:
type = R_AMD64_64;
break;
case EM_ARM:
type = R_ARM_ABS32;
break;

32
util/cbfstool/rmodule.c
View File

@ -44,6 +44,33 @@ static int should_emit_386(Elf64_Rela *rel)
return (type == R_386_32);
}
static int valid_reloc_amd64(Elf64_Rela *rel)
{
int type;
type = ELF64_R_TYPE(rel->r_info);
/* Only these 5 relocations are expected to be found. */
return (type == R_AMD64_64 ||
type == R_AMD64_PC64 ||
type == R_AMD64_32S ||
type == R_AMD64_32 ||
type == R_AMD64_PC32);
}
static int should_emit_amd64(Elf64_Rela *rel)
{
int type;
type = ELF64_R_TYPE(rel->r_info);
/* Only emit absolute relocations */
return (type == R_AMD64_64 ||
type == R_AMD64_PC64 ||
type == R_AMD64_32S ||
type == R_AMD64_32);
}
static int valid_reloc_arm(Elf64_Rela *rel)
{
int type;
@ -100,6 +127,11 @@ static const struct arch_ops reloc_ops[] = {
.valid_type = valid_reloc_386,
.should_emit = should_emit_386,
},
{
.arch = EM_X86_64,
.valid_type = valid_reloc_amd64,
.should_emit = should_emit_amd64,
},
{
.arch = EM_ARM,
.valid_type = valid_reloc_arm,