forked from Minki/linux
786d35d45c
Use the mapping of Elf_[SPE]hdr, Elf_Addr, Elf_Sym, Elf_Dyn, Elf_Rel/Rela,
ELF_R_TYPE() and ELF_R_SYM() to either the 32-bit version or the 64-bit version
into asm-generic/module.h for all arches bar MIPS.
Also, use the generic definition mod_arch_specific where possible.
To this end, I've defined three new config bools:
(*) HAVE_MOD_ARCH_SPECIFIC
Arches define this if they don't want to use the empty generic
mod_arch_specific struct.
(*) MODULES_USE_ELF_RELA
Arches define this if their modules can contain RELA records. This causes
the Elf_Rela mapping to be emitted and allows apply_relocate_add() to be
defined by the arch rather than have the core emit an error message.
(*) MODULES_USE_ELF_REL
Arches define this if their modules can contain REL records. This causes
the Elf_Rel mapping to be emitted and allows apply_relocate() to be
defined by the arch rather than have the core emit an error message.
Note that it is possible to allow both REL and RELA records: m68k and mips are
two arches that do this.
With this, some arch asm/module.h files can be deleted entirely and replaced
with a generic-y marker in the arch Kbuild file.
Additionally, I have removed the bits from m32r and score that handle the
unsupported type of relocation record as that's now handled centrally.
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Sam Ravnborg <sam@ravnborg.org>
Signed-off-by: Rusty Russell <rusty@rustcorp.com.au>
157 lines
4.4 KiB
C
157 lines
4.4 KiB
C
#ifndef _ASM_MODULE_H
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#define _ASM_MODULE_H
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#include <linux/list.h>
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#include <linux/elf.h>
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#include <asm/uaccess.h>
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struct mod_arch_specific {
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/* Data Bus Error exception tables */
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struct list_head dbe_list;
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const struct exception_table_entry *dbe_start;
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const struct exception_table_entry *dbe_end;
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struct mips_hi16 *r_mips_hi16_list;
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};
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typedef uint8_t Elf64_Byte; /* Type for a 8-bit quantity. */
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typedef struct {
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Elf64_Addr r_offset; /* Address of relocation. */
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Elf64_Word r_sym; /* Symbol index. */
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Elf64_Byte r_ssym; /* Special symbol. */
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Elf64_Byte r_type3; /* Third relocation. */
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Elf64_Byte r_type2; /* Second relocation. */
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Elf64_Byte r_type; /* First relocation. */
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} Elf64_Mips_Rel;
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typedef struct {
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Elf64_Addr r_offset; /* Address of relocation. */
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Elf64_Word r_sym; /* Symbol index. */
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Elf64_Byte r_ssym; /* Special symbol. */
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Elf64_Byte r_type3; /* Third relocation. */
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Elf64_Byte r_type2; /* Second relocation. */
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Elf64_Byte r_type; /* First relocation. */
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Elf64_Sxword r_addend; /* Addend. */
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} Elf64_Mips_Rela;
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#ifdef CONFIG_32BIT
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#define Elf_Shdr Elf32_Shdr
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#define Elf_Sym Elf32_Sym
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#define Elf_Ehdr Elf32_Ehdr
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#define Elf_Addr Elf32_Addr
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#define Elf_Rel Elf32_Rel
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#define Elf_Rela Elf32_Rela
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#define ELF_R_TYPE(X) ELF32_R_TYPE(X)
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#define ELF_R_SYM(X) ELF32_R_SYM(X)
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#define Elf_Mips_Rel Elf32_Rel
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#define Elf_Mips_Rela Elf32_Rela
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#define ELF_MIPS_R_SYM(rel) ELF32_R_SYM(rel.r_info)
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#define ELF_MIPS_R_TYPE(rel) ELF32_R_TYPE(rel.r_info)
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#endif
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#ifdef CONFIG_64BIT
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#define Elf_Shdr Elf64_Shdr
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#define Elf_Sym Elf64_Sym
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#define Elf_Ehdr Elf64_Ehdr
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#define Elf_Addr Elf64_Addr
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#define Elf_Rel Elf64_Rel
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#define Elf_Rela Elf64_Rela
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#define ELF_R_TYPE(X) ELF64_R_TYPE(X)
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#define ELF_R_SYM(X) ELF64_R_SYM(X)
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#define Elf_Mips_Rel Elf64_Mips_Rel
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#define Elf_Mips_Rela Elf64_Mips_Rela
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#define ELF_MIPS_R_SYM(rel) (rel.r_sym)
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#define ELF_MIPS_R_TYPE(rel) (rel.r_type)
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#endif
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#ifdef CONFIG_MODULES
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/* Given an address, look for it in the exception tables. */
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const struct exception_table_entry*search_module_dbetables(unsigned long addr);
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#else
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/* Given an address, look for it in the exception tables. */
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static inline const struct exception_table_entry *
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search_module_dbetables(unsigned long addr)
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{
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return NULL;
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}
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#endif
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#ifdef CONFIG_CPU_BMIPS
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#define MODULE_PROC_FAMILY "BMIPS "
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#elif defined CONFIG_CPU_MIPS32_R1
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#define MODULE_PROC_FAMILY "MIPS32_R1 "
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#elif defined CONFIG_CPU_MIPS32_R2
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#define MODULE_PROC_FAMILY "MIPS32_R2 "
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#elif defined CONFIG_CPU_MIPS64_R1
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#define MODULE_PROC_FAMILY "MIPS64_R1 "
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#elif defined CONFIG_CPU_MIPS64_R2
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#define MODULE_PROC_FAMILY "MIPS64_R2 "
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#elif defined CONFIG_CPU_R3000
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#define MODULE_PROC_FAMILY "R3000 "
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#elif defined CONFIG_CPU_TX39XX
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#define MODULE_PROC_FAMILY "TX39XX "
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#elif defined CONFIG_CPU_VR41XX
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#define MODULE_PROC_FAMILY "VR41XX "
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#elif defined CONFIG_CPU_R4300
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#define MODULE_PROC_FAMILY "R4300 "
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#elif defined CONFIG_CPU_R4X00
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#define MODULE_PROC_FAMILY "R4X00 "
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#elif defined CONFIG_CPU_TX49XX
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#define MODULE_PROC_FAMILY "TX49XX "
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#elif defined CONFIG_CPU_R5000
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#define MODULE_PROC_FAMILY "R5000 "
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#elif defined CONFIG_CPU_R5432
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#define MODULE_PROC_FAMILY "R5432 "
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#elif defined CONFIG_CPU_R5500
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#define MODULE_PROC_FAMILY "R5500 "
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#elif defined CONFIG_CPU_R6000
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#define MODULE_PROC_FAMILY "R6000 "
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#elif defined CONFIG_CPU_NEVADA
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#define MODULE_PROC_FAMILY "NEVADA "
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#elif defined CONFIG_CPU_R8000
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#define MODULE_PROC_FAMILY "R8000 "
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#elif defined CONFIG_CPU_R10000
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#define MODULE_PROC_FAMILY "R10000 "
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#elif defined CONFIG_CPU_RM7000
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#define MODULE_PROC_FAMILY "RM7000 "
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#elif defined CONFIG_CPU_RM9000
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#define MODULE_PROC_FAMILY "RM9000 "
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#elif defined CONFIG_CPU_SB1
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#define MODULE_PROC_FAMILY "SB1 "
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#elif defined CONFIG_CPU_LOONGSON1
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#define MODULE_PROC_FAMILY "LOONGSON1 "
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#elif defined CONFIG_CPU_LOONGSON2
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#define MODULE_PROC_FAMILY "LOONGSON2 "
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#elif defined CONFIG_CPU_CAVIUM_OCTEON
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#define MODULE_PROC_FAMILY "OCTEON "
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#elif defined CONFIG_CPU_XLR
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#define MODULE_PROC_FAMILY "XLR "
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#elif defined CONFIG_CPU_XLP
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#define MODULE_PROC_FAMILY "XLP "
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#else
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#error MODULE_PROC_FAMILY undefined for your processor configuration
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#endif
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#ifdef CONFIG_32BIT
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#define MODULE_KERNEL_TYPE "32BIT "
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#elif defined CONFIG_64BIT
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#define MODULE_KERNEL_TYPE "64BIT "
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#endif
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#ifdef CONFIG_MIPS_MT_SMTC
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#define MODULE_KERNEL_SMTC "MT_SMTC "
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#else
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#define MODULE_KERNEL_SMTC ""
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#endif
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#define MODULE_ARCH_VERMAGIC \
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MODULE_PROC_FAMILY MODULE_KERNEL_TYPE MODULE_KERNEL_SMTC
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#endif /* _ASM_MODULE_H */
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