diff options
| author | Will Deacon <will.deacon@arm.com> | 2013-10-11 14:52:12 +0100 |
|---|---|---|
| committer | Catalin Marinas <catalin.marinas@arm.com> | 2013-10-25 15:59:35 +0100 |
| commit | a795a38eb91cf72c4a05e72a9c84e317ee179a48 (patch) | |
| tree | a4755e42d95378d52035c7184cc8ba0c57a106e8 /arch/arm64/include | |
| parent | 94ed1f2cb5d46533f10262b1b760db7dbec9cf10 (diff) | |
arm64: compat: add support for big-endian (BE8) AArch32 binaries
This patch adds support for BE8 AArch32 tasks to the compat layer.
Signed-off-by: Will Deacon <will.deacon@arm.com>
Signed-off-by: Catalin Marinas <catalin.marinas@arm.com>
Diffstat (limited to 'arch/arm64/include')
| -rw-r--r-- | arch/arm64/include/asm/compat.h | 14 | ||||
| -rw-r--r-- | arch/arm64/include/asm/elf.h | 5 | ||||
| -rw-r--r-- | arch/arm64/include/asm/processor.h | 5 | ||||
| -rw-r--r-- | arch/arm64/include/asm/ptrace.h | 1 |
4 files changed, 25 insertions, 0 deletions
diff --git a/arch/arm64/include/asm/compat.h b/arch/arm64/include/asm/compat.h index 899af807ef0..fda2704b3f9 100644 --- a/arch/arm64/include/asm/compat.h +++ b/arch/arm64/include/asm/compat.h @@ -26,7 +26,11 @@ #include <linux/ptrace.h> #define COMPAT_USER_HZ 100 +#ifdef __AARCH64EB__ +#define COMPAT_UTS_MACHINE "armv8b\0\0" +#else #define COMPAT_UTS_MACHINE "armv8l\0\0" +#endif typedef u32 compat_size_t; typedef s32 compat_ssize_t; @@ -73,13 +77,23 @@ struct compat_timeval { }; struct compat_stat { +#ifdef __AARCH64EB__ + short st_dev; + short __pad1; +#else compat_dev_t st_dev; +#endif compat_ino_t st_ino; compat_mode_t st_mode; compat_ushort_t st_nlink; __compat_uid16_t st_uid; __compat_gid16_t st_gid; +#ifdef __AARCH64EB__ + short st_rdev; + short __pad2; +#else compat_dev_t st_rdev; +#endif compat_off_t st_size; compat_off_t st_blksize; compat_off_t st_blocks; diff --git a/arch/arm64/include/asm/elf.h b/arch/arm64/include/asm/elf.h index a3e4a5564ea..01d3aab64b7 100644 --- a/arch/arm64/include/asm/elf.h +++ b/arch/arm64/include/asm/elf.h @@ -162,7 +162,12 @@ extern unsigned long arch_randomize_brk(struct mm_struct *mm); #define arch_randomize_brk arch_randomize_brk #ifdef CONFIG_COMPAT + +#ifdef __AARCH64EB__ +#define COMPAT_ELF_PLATFORM ("v8b") +#else #define COMPAT_ELF_PLATFORM ("v8l") +#endif #define COMPAT_ELF_ET_DYN_BASE (randomize_et_dyn(2 * TASK_SIZE_32 / 3)) diff --git a/arch/arm64/include/asm/processor.h b/arch/arm64/include/asm/processor.h index ab239b2c456..45b20cd6cbc 100644 --- a/arch/arm64/include/asm/processor.h +++ b/arch/arm64/include/asm/processor.h @@ -107,6 +107,11 @@ static inline void compat_start_thread(struct pt_regs *regs, unsigned long pc, regs->pstate = COMPAT_PSR_MODE_USR; if (pc & 1) regs->pstate |= COMPAT_PSR_T_BIT; + +#ifdef __AARCH64EB__ + regs->pstate |= COMPAT_PSR_E_BIT; +#endif + regs->compat_sp = sp; } #endif diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index 0dacbbf9458..0e7fa496373 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -42,6 +42,7 @@ #define COMPAT_PSR_MODE_UND 0x0000001b #define COMPAT_PSR_MODE_SYS 0x0000001f #define COMPAT_PSR_T_BIT 0x00000020 +#define COMPAT_PSR_E_BIT 0x00000200 #define COMPAT_PSR_F_BIT 0x00000040 #define COMPAT_PSR_I_BIT 0x00000080 #define COMPAT_PSR_A_BIT 0x00000100 |