From c8d8b837ebe4b4f11e1b0c4a2bdc358c697692ed Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Tue, 25 Apr 2006 01:53:43 +0900 Subject: kbuild: fix modpost segfault for 64bit mipsel kernel 64bit mips has different r_info layout. This patch fixes modpost segfault for 64bit little endian mips kernel. Signed-off-by: Atsushi Nemoto Signed-off-by: Sam Ravnborg --- scripts/mod/modpost.h | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) (limited to 'scripts/mod/modpost.h') diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index b14255c..89b96c6 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -39,6 +39,25 @@ #define ELF_R_TYPE ELF64_R_TYPE #endif +/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */ +typedef struct +{ + Elf32_Word r_sym; /* Symbol index */ + unsigned char r_ssym; /* Special symbol for 2nd relocation */ + unsigned char r_type3; /* 3rd relocation type */ + unsigned char r_type2; /* 2nd relocation type */ + unsigned char r_type1; /* 1st relocation type */ +} _Elf64_Mips_R_Info; + +typedef union +{ + Elf64_Xword r_info_number; + _Elf64_Mips_R_Info r_info_fields; +} _Elf64_Mips_R_Info_union; + +#define ELF64_MIPS_R_SYM(i) \ + ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) + #if KERNEL_ELFDATA != HOST_ELFDATA static inline void __endian(const void *src, void *dest, unsigned int size) -- cgit v1.1 From 601e7f024edbea8018de34c83a7398623214e636 Mon Sep 17 00:00:00 2001 From: Linus Torvalds Date: Mon, 8 May 2006 13:38:42 -0700 Subject: Revert "kbuild: fix modpost segfault for 64bit mipsel kernel" This reverts commit c8d8b837ebe4b4f11e1b0c4a2bdc358c697692ed, which caused problems for the x86 build. Quoth Sam: "It was discussed on mips list but apparently the fix was bogus. I will not have time to look into it so mips can carry this local fix until we get a proper fix in mainline." Signed-off-by: Linus Torvalds --- scripts/mod/modpost.h | 19 ------------------- 1 file changed, 19 deletions(-) (limited to 'scripts/mod/modpost.h') diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 89b96c6..b14255c 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -39,25 +39,6 @@ #define ELF_R_TYPE ELF64_R_TYPE #endif -/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */ -typedef struct -{ - Elf32_Word r_sym; /* Symbol index */ - unsigned char r_ssym; /* Special symbol for 2nd relocation */ - unsigned char r_type3; /* 3rd relocation type */ - unsigned char r_type2; /* 2nd relocation type */ - unsigned char r_type1; /* 1st relocation type */ -} _Elf64_Mips_R_Info; - -typedef union -{ - Elf64_Xword r_info_number; - _Elf64_Mips_R_Info r_info_fields; -} _Elf64_Mips_R_Info_union; - -#define ELF64_MIPS_R_SYM(i) \ - ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) - #if KERNEL_ELFDATA != HOST_ELFDATA static inline void __endian(const void *src, void *dest, unsigned int size) -- cgit v1.1 From 2c1a51f39d9551a514d7a089d01c23c0c3a54ab8 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Sat, 20 May 2006 15:00:26 -0700 Subject: [PATCH] kbuild: check SHT_REL sections I found that modpost can not detect section mismatch on mips and i386. On mips64, the modpost (with r_info layout fix) can detect it. The current modpst only checks SHT_RELA section but I suppose SHT_REL section should be checked also. This patch does not contain r_info layout fix. I'll post an updated r_info layout fix on next mail. Check SHT_REL sections as like as SHT_RELA sections to detect section mismatch. Signed-off-by: Atsushi Nemoto Cc: Sam Ravnborg Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/mod/modpost.h | 2 ++ 1 file changed, 2 insertions(+) (limited to 'scripts/mod/modpost.h') diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index b14255c..086fa46 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -21,6 +21,7 @@ #define ELF_ST_BIND ELF32_ST_BIND #define ELF_ST_TYPE ELF32_ST_TYPE +#define Elf_Rel Elf32_Rel #define Elf_Rela Elf32_Rela #define ELF_R_SYM ELF32_R_SYM #define ELF_R_TYPE ELF32_R_TYPE @@ -34,6 +35,7 @@ #define ELF_ST_BIND ELF64_ST_BIND #define ELF_ST_TYPE ELF64_ST_TYPE +#define Elf_Rel Elf64_Rel #define Elf_Rela Elf64_Rela #define ELF_R_SYM ELF64_R_SYM #define ELF_R_TYPE ELF64_R_TYPE -- cgit v1.1 From eae07ac607f317ee6781983d3f9d8f77ef144b45 Mon Sep 17 00:00:00 2001 From: Atsushi Nemoto Date: Sat, 20 May 2006 15:00:28 -0700 Subject: [PATCH] kbuild: fix modpost segfault for 64bit mipsel kernel Here is an updated r_info layout fix. Please apply "check SHT_REL sections" patch before this. 64bit mips has different r_info layout. This patch fixes modpost segfault for 64bit little endian mips kernel. Signed-off-by: Atsushi Nemoto Cc: Sam Ravnborg Cc: Ralf Baechle Signed-off-by: Andrew Morton Signed-off-by: Linus Torvalds --- scripts/mod/modpost.h | 21 +++++++++++++++++++-- 1 file changed, 19 insertions(+), 2 deletions(-) (limited to 'scripts/mod/modpost.h') diff --git a/scripts/mod/modpost.h b/scripts/mod/modpost.h index 086fa46..861d866 100644 --- a/scripts/mod/modpost.h +++ b/scripts/mod/modpost.h @@ -41,6 +41,25 @@ #define ELF_R_TYPE ELF64_R_TYPE #endif +/* The 64-bit MIPS ELF ABI uses an unusual reloc format. */ +typedef struct +{ + Elf32_Word r_sym; /* Symbol index */ + unsigned char r_ssym; /* Special symbol for 2nd relocation */ + unsigned char r_type3; /* 3rd relocation type */ + unsigned char r_type2; /* 2nd relocation type */ + unsigned char r_type1; /* 1st relocation type */ +} _Elf64_Mips_R_Info; + +typedef union +{ + Elf64_Xword r_info_number; + _Elf64_Mips_R_Info r_info_fields; +} _Elf64_Mips_R_Info_union; + +#define ELF64_MIPS_R_SYM(i) \ + ((__extension__ (_Elf64_Mips_R_Info_union)(i)).r_info_fields.r_sym) + #if KERNEL_ELFDATA != HOST_ELFDATA static inline void __endian(const void *src, void *dest, unsigned int size) @@ -50,8 +69,6 @@ static inline void __endian(const void *src, void *dest, unsigned int size) ((unsigned char*)dest)[i] = ((unsigned char*)src)[size - i-1]; } - - #define TO_NATIVE(x) \ ({ \ typeof(x) __x; \ -- cgit v1.1