diff options
Diffstat (limited to 'arch/powerpc/kernel/optprobes.c')
| -rw-r--r-- | arch/powerpc/kernel/optprobes.c | 24 |
1 files changed, 21 insertions, 3 deletions
diff --git a/arch/powerpc/kernel/optprobes.c b/arch/powerpc/kernel/optprobes.c index 7f7cdbeacd1a..cdf87086fa33 100644 --- a/arch/powerpc/kernel/optprobes.c +++ b/arch/powerpc/kernel/optprobes.c @@ -141,11 +141,21 @@ void arch_remove_optimized_kprobe(struct optimized_kprobe *op) } } +static void patch_imm32_load_insns(unsigned long val, int reg, kprobe_opcode_t *addr) +{ + patch_instruction((struct ppc_inst *)addr, + ppc_inst(PPC_RAW_LIS(reg, IMM_H(val)))); + addr++; + + patch_instruction((struct ppc_inst *)addr, + ppc_inst(PPC_RAW_ORI(reg, reg, IMM_L(val)))); +} + /* * Generate instructions to load provided immediate 64-bit value * to register 'reg' and patch these instructions at 'addr'. */ -static void patch_imm64_load_insns(unsigned long val, int reg, kprobe_opcode_t *addr) +static void patch_imm64_load_insns(unsigned long long val, int reg, kprobe_opcode_t *addr) { /* lis reg,(op)@highest */ patch_instruction((struct ppc_inst *)addr, @@ -177,6 +187,14 @@ static void patch_imm64_load_insns(unsigned long val, int reg, kprobe_opcode_t * ___PPC_RS(reg) | (val & 0xffff))); } +static void patch_imm_load_insns(unsigned long val, int reg, kprobe_opcode_t *addr) +{ + if (IS_ENABLED(CONFIG_PPC64)) + patch_imm64_load_insns(val, reg, addr); + else + patch_imm32_load_insns(val, reg, addr); +} + int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p) { struct ppc_inst branch_op_callback, branch_emulate_step, temp; @@ -230,7 +248,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p) * Fixup the template with instructions to: * 1. load the address of the actual probepoint */ - patch_imm64_load_insns((unsigned long)op, 3, buff + TMPL_OP_IDX); + patch_imm_load_insns((unsigned long)op, 3, buff + TMPL_OP_IDX); /* * 2. branch to optimized_callback() and emulate_step() @@ -264,7 +282,7 @@ int arch_prepare_optimized_kprobe(struct optimized_kprobe *op, struct kprobe *p) * 3. load instruction to be emulated into relevant register, and */ temp = ppc_inst_read((struct ppc_inst *)p->ainsn.insn); - patch_imm64_load_insns(ppc_inst_as_u64(temp), 4, buff + TMPL_INSN_IDX); + patch_imm_load_insns(ppc_inst_as_ulong(temp), 4, buff + TMPL_INSN_IDX); /* * 4. branch back from trampoline |