diff options
Diffstat (limited to 'arch/powerpc/include/asm/inst.h')
| -rw-r--r-- | arch/powerpc/include/asm/inst.h | 55 |
1 files changed, 44 insertions, 11 deletions
diff --git a/arch/powerpc/include/asm/inst.h b/arch/powerpc/include/asm/inst.h index cc73c1267572..268d3bd073c8 100644 --- a/arch/powerpc/include/asm/inst.h +++ b/arch/powerpc/include/asm/inst.h @@ -4,6 +4,40 @@ #include <asm/ppc-opcode.h> +#ifdef CONFIG_PPC64 + +#define ___get_user_instr(gu_op, dest, ptr) \ +({ \ + long __gui_ret = 0; \ + unsigned long __gui_ptr = (unsigned long)ptr; \ + struct ppc_inst __gui_inst; \ + unsigned int __prefix, __suffix; \ + __gui_ret = gu_op(__prefix, (unsigned int __user *)__gui_ptr); \ + if (__gui_ret == 0) { \ + if ((__prefix >> 26) == OP_PREFIX) { \ + __gui_ret = gu_op(__suffix, \ + (unsigned int __user *)__gui_ptr + 1); \ + __gui_inst = ppc_inst_prefix(__prefix, \ + __suffix); \ + } else { \ + __gui_inst = ppc_inst(__prefix); \ + } \ + if (__gui_ret == 0) \ + (dest) = __gui_inst; \ + } \ + __gui_ret; \ +}) +#else /* !CONFIG_PPC64 */ +#define ___get_user_instr(gu_op, dest, ptr) \ + gu_op((dest).val, (u32 __user *)(ptr)) +#endif /* CONFIG_PPC64 */ + +#define get_user_instr(x, ptr) \ + ___get_user_instr(get_user, x, ptr) + +#define __get_user_instr(x, ptr) \ + ___get_user_instr(__get_user, x, ptr) + /* * Instruction data type for POWER */ @@ -68,6 +102,8 @@ static inline bool ppc_inst_equal(struct ppc_inst x, struct ppc_inst y) #define ppc_inst(x) ((struct ppc_inst){ .val = x }) +#define ppc_inst_prefix(x, y) ppc_inst(x) + static inline bool ppc_inst_prefixed(struct ppc_inst x) { return false; @@ -113,13 +149,14 @@ static inline struct ppc_inst *ppc_inst_next(void *location, struct ppc_inst *va return location + ppc_inst_len(tmp); } -static inline u64 ppc_inst_as_u64(struct ppc_inst x) +static inline unsigned long ppc_inst_as_ulong(struct ppc_inst x) { -#ifdef CONFIG_CPU_LITTLE_ENDIAN - return (u64)ppc_inst_suffix(x) << 32 | ppc_inst_val(x); -#else - return (u64)ppc_inst_val(x) << 32 | ppc_inst_suffix(x); -#endif + if (IS_ENABLED(CONFIG_PPC32)) + return ppc_inst_val(x); + else if (IS_ENABLED(CONFIG_CPU_LITTLE_ENDIAN)) + return (u64)ppc_inst_suffix(x) << 32 | ppc_inst_val(x); + else + return (u64)ppc_inst_val(x) << 32 | ppc_inst_suffix(x); } #define PPC_INST_STR_LEN sizeof("00000000 00000000") @@ -141,10 +178,6 @@ static inline char *__ppc_inst_as_str(char str[PPC_INST_STR_LEN], struct ppc_ins __str; \ }) -int probe_user_read_inst(struct ppc_inst *inst, - struct ppc_inst __user *nip); - -int probe_kernel_read_inst(struct ppc_inst *inst, - struct ppc_inst *src); +int copy_inst_from_kernel_nofault(struct ppc_inst *inst, struct ppc_inst *src); #endif /* _ASM_POWERPC_INST_H */ |