diff options
Diffstat (limited to 'arch/arm64/include/asm/ptrace.h')
| -rw-r--r-- | arch/arm64/include/asm/ptrace.h | 79 |
1 files changed, 53 insertions, 26 deletions
diff --git a/arch/arm64/include/asm/ptrace.h b/arch/arm64/include/asm/ptrace.h index 6069d66e0bc2..177b851ca6d9 100644 --- a/arch/arm64/include/asm/ptrace.h +++ b/arch/arm64/include/asm/ptrace.h @@ -35,36 +35,39 @@ #define COMPAT_PTRACE_GETHBPREGS 29 #define COMPAT_PTRACE_SETHBPREGS 30 -/* AArch32 CPSR bits */ -#define COMPAT_PSR_MODE_MASK 0x0000001f -#define COMPAT_PSR_MODE_USR 0x00000010 -#define COMPAT_PSR_MODE_FIQ 0x00000011 -#define COMPAT_PSR_MODE_IRQ 0x00000012 -#define COMPAT_PSR_MODE_SVC 0x00000013 -#define COMPAT_PSR_MODE_ABT 0x00000017 -#define COMPAT_PSR_MODE_HYP 0x0000001a -#define COMPAT_PSR_MODE_UND 0x0000001b -#define COMPAT_PSR_MODE_SYS 0x0000001f -#define COMPAT_PSR_T_BIT 0x00000020 -#define COMPAT_PSR_F_BIT 0x00000040 -#define COMPAT_PSR_I_BIT 0x00000080 -#define COMPAT_PSR_A_BIT 0x00000100 -#define COMPAT_PSR_E_BIT 0x00000200 -#define COMPAT_PSR_J_BIT 0x01000000 -#define COMPAT_PSR_Q_BIT 0x08000000 -#define COMPAT_PSR_V_BIT 0x10000000 -#define COMPAT_PSR_C_BIT 0x20000000 -#define COMPAT_PSR_Z_BIT 0x40000000 -#define COMPAT_PSR_N_BIT 0x80000000 -#define COMPAT_PSR_IT_MASK 0x0600fc00 /* If-Then execution state mask */ -#define COMPAT_PSR_GE_MASK 0x000f0000 +/* SPSR_ELx bits for exceptions taken from AArch32 */ +#define PSR_AA32_MODE_MASK 0x0000001f +#define PSR_AA32_MODE_USR 0x00000010 +#define PSR_AA32_MODE_FIQ 0x00000011 +#define PSR_AA32_MODE_IRQ 0x00000012 +#define PSR_AA32_MODE_SVC 0x00000013 +#define PSR_AA32_MODE_ABT 0x00000017 +#define PSR_AA32_MODE_HYP 0x0000001a +#define PSR_AA32_MODE_UND 0x0000001b +#define PSR_AA32_MODE_SYS 0x0000001f +#define PSR_AA32_T_BIT 0x00000020 +#define PSR_AA32_F_BIT 0x00000040 +#define PSR_AA32_I_BIT 0x00000080 +#define PSR_AA32_A_BIT 0x00000100 +#define PSR_AA32_E_BIT 0x00000200 +#define PSR_AA32_DIT_BIT 0x01000000 +#define PSR_AA32_Q_BIT 0x08000000 +#define PSR_AA32_V_BIT 0x10000000 +#define PSR_AA32_C_BIT 0x20000000 +#define PSR_AA32_Z_BIT 0x40000000 +#define PSR_AA32_N_BIT 0x80000000 +#define PSR_AA32_IT_MASK 0x0600fc00 /* If-Then execution state mask */ +#define PSR_AA32_GE_MASK 0x000f0000 #ifdef CONFIG_CPU_BIG_ENDIAN -#define COMPAT_PSR_ENDSTATE COMPAT_PSR_E_BIT +#define PSR_AA32_ENDSTATE PSR_AA32_E_BIT #else -#define COMPAT_PSR_ENDSTATE 0 +#define PSR_AA32_ENDSTATE 0 #endif +/* AArch32 CPSR bits, as seen in AArch32 */ +#define COMPAT_PSR_DIT_BIT 0x00200000 + /* * These are 'magic' values for PTRACE_PEEKUSR that return info about where a * process is located in memory. @@ -111,6 +114,30 @@ #define compat_sp_fiq regs[29] #define compat_lr_fiq regs[30] +static inline unsigned long compat_psr_to_pstate(const unsigned long psr) +{ + unsigned long pstate; + + pstate = psr & ~COMPAT_PSR_DIT_BIT; + + if (psr & COMPAT_PSR_DIT_BIT) + pstate |= PSR_AA32_DIT_BIT; + + return pstate; +} + +static inline unsigned long pstate_to_compat_psr(const unsigned long pstate) +{ + unsigned long psr; + + psr = pstate & ~PSR_AA32_DIT_BIT; + + if (pstate & PSR_AA32_DIT_BIT) + psr |= COMPAT_PSR_DIT_BIT; + + return psr; +} + /* * This struct defines the way the registers are stored on the stack during an * exception. Note that sizeof(struct pt_regs) has to be a multiple of 16 (for @@ -156,7 +183,7 @@ static inline void forget_syscall(struct pt_regs *regs) #ifdef CONFIG_COMPAT #define compat_thumb_mode(regs) \ - (((regs)->pstate & COMPAT_PSR_T_BIT)) + (((regs)->pstate & PSR_AA32_T_BIT)) #else #define compat_thumb_mode(regs) (0) #endif |