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| author | Christophe Leroy <christophe.leroy@c-s.fr> | 2020-02-28 03:14:48 +0300 |
|---|---|---|
| committer | Michael Ellerman <mpe@ellerman.id.au> | 2020-04-01 06:30:49 +0300 |
| commit | da529d4739abbb7681b1804c5b9bf615a5796f43 (patch) | |
| tree | 9503f2737aca992d2cd357c4dc03795e97418929 /arch/powerpc/kernel/ptrace | |
| parent | e08227d25a26901d13c6b597e60dffba40e2659d (diff) | |
| download | linux-da529d4739abbb7681b1804c5b9bf615a5796f43.tar.xz | |
powerpc/ptrace: create ppc_gethwdinfo()
Create ippc_gethwdinfo() to handle PPC_PTRACE_GETHWDBGINFO and
reduce ifdef mess
Signed-off-by: Christophe Leroy <christophe.leroy@c-s.fr>
Signed-off-by: Michael Ellerman <mpe@ellerman.id.au>
Link: https://lore.kernel.org/r/82fefcc1ec75b96cece792878217a5d85ecda0c2.1582848567.git.christophe.leroy@c-s.fr
Diffstat (limited to 'arch/powerpc/kernel/ptrace')
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-adv.c | 15 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-decl.h | 1 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace-noadv.c | 20 | ||||
| -rw-r--r-- | arch/powerpc/kernel/ptrace/ptrace.c | 32 |
4 files changed, 37 insertions, 31 deletions
diff --git a/arch/powerpc/kernel/ptrace/ptrace-adv.c b/arch/powerpc/kernel/ptrace/ptrace-adv.c index c71bedd54a8b..3990c01ef8cf 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-adv.c +++ b/arch/powerpc/kernel/ptrace/ptrace-adv.c @@ -56,6 +56,21 @@ void user_disable_single_step(struct task_struct *task) clear_tsk_thread_flag(task, TIF_SINGLESTEP); } +void ppc_gethwdinfo(struct ppc_debug_info *dbginfo) +{ + dbginfo->version = 1; + dbginfo->num_instruction_bps = CONFIG_PPC_ADV_DEBUG_IACS; + dbginfo->num_data_bps = CONFIG_PPC_ADV_DEBUG_DACS; + dbginfo->num_condition_regs = CONFIG_PPC_ADV_DEBUG_DVCS; + dbginfo->data_bp_alignment = 4; + dbginfo->sizeof_condition = 4; + dbginfo->features = PPC_DEBUG_FEATURE_INSN_BP_RANGE | + PPC_DEBUG_FEATURE_INSN_BP_MASK; + if (IS_ENABLED(CONFIG_PPC_ADV_DEBUG_DAC_RANGE)) + dbginfo->features |= PPC_DEBUG_FEATURE_DATA_BP_RANGE | + PPC_DEBUG_FEATURE_DATA_BP_MASK; +} + int ptrace_get_debugreg(struct task_struct *child, unsigned long addr, unsigned long __user *datalp) { diff --git a/arch/powerpc/kernel/ptrace/ptrace-decl.h b/arch/powerpc/kernel/ptrace/ptrace-decl.h index 4b4b6a1d508a..3c8a81999292 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-decl.h +++ b/arch/powerpc/kernel/ptrace/ptrace-decl.h @@ -176,6 +176,7 @@ int tm_cgpr32_set(struct task_struct *target, const struct user_regset *regset, extern const struct user_regset_view user_ppc_native_view; /* ptrace-(no)adv */ +void ppc_gethwdinfo(struct ppc_debug_info *dbginfo); int ptrace_get_debugreg(struct task_struct *child, unsigned long addr, unsigned long __user *datalp); int ptrace_set_debugreg(struct task_struct *task, unsigned long addr, unsigned long data); diff --git a/arch/powerpc/kernel/ptrace/ptrace-noadv.c b/arch/powerpc/kernel/ptrace/ptrace-noadv.c index a6ad492badc6..f87e7c5c3bf3 100644 --- a/arch/powerpc/kernel/ptrace/ptrace-noadv.c +++ b/arch/powerpc/kernel/ptrace/ptrace-noadv.c @@ -39,6 +39,26 @@ void user_disable_single_step(struct task_struct *task) clear_tsk_thread_flag(task, TIF_SINGLESTEP); } +void ppc_gethwdinfo(struct ppc_debug_info *dbginfo) +{ + dbginfo->version = 1; + dbginfo->num_instruction_bps = 0; + if (ppc_breakpoint_available()) + dbginfo->num_data_bps = 1; + else + dbginfo->num_data_bps = 0; + dbginfo->num_condition_regs = 0; + dbginfo->data_bp_alignment = sizeof(long); + dbginfo->sizeof_condition = 0; + if (IS_ENABLED(CONFIG_HAVE_HW_BREAKPOINT)) { + dbginfo->features = PPC_DEBUG_FEATURE_DATA_BP_RANGE; + if (dawr_enabled()) + dbginfo->features |= PPC_DEBUG_FEATURE_DATA_BP_DAWR; + } else { + dbginfo->features = 0; + } +} + int ptrace_get_debugreg(struct task_struct *child, unsigned long addr, unsigned long __user *datalp) { diff --git a/arch/powerpc/kernel/ptrace/ptrace.c b/arch/powerpc/kernel/ptrace/ptrace.c index d6e1a301d20e..a44f6e5e05ff 100644 --- a/arch/powerpc/kernel/ptrace/ptrace.c +++ b/arch/powerpc/kernel/ptrace/ptrace.c @@ -139,37 +139,7 @@ long arch_ptrace(struct task_struct *child, long request, case PPC_PTRACE_GETHWDBGINFO: { struct ppc_debug_info dbginfo; - dbginfo.version = 1; -#ifdef CONFIG_PPC_ADV_DEBUG_REGS - dbginfo.num_instruction_bps = CONFIG_PPC_ADV_DEBUG_IACS; - dbginfo.num_data_bps = CONFIG_PPC_ADV_DEBUG_DACS; - dbginfo.num_condition_regs = CONFIG_PPC_ADV_DEBUG_DVCS; - dbginfo.data_bp_alignment = 4; - dbginfo.sizeof_condition = 4; - dbginfo.features = PPC_DEBUG_FEATURE_INSN_BP_RANGE | - PPC_DEBUG_FEATURE_INSN_BP_MASK; -#ifdef CONFIG_PPC_ADV_DEBUG_DAC_RANGE - dbginfo.features |= - PPC_DEBUG_FEATURE_DATA_BP_RANGE | - PPC_DEBUG_FEATURE_DATA_BP_MASK; -#endif -#else /* !CONFIG_PPC_ADV_DEBUG_REGS */ - dbginfo.num_instruction_bps = 0; - if (ppc_breakpoint_available()) - dbginfo.num_data_bps = 1; - else - dbginfo.num_data_bps = 0; - dbginfo.num_condition_regs = 0; - dbginfo.data_bp_alignment = sizeof(long); - dbginfo.sizeof_condition = 0; -#ifdef CONFIG_HAVE_HW_BREAKPOINT - dbginfo.features = PPC_DEBUG_FEATURE_DATA_BP_RANGE; - if (dawr_enabled()) - dbginfo.features |= PPC_DEBUG_FEATURE_DATA_BP_DAWR; -#else - dbginfo.features = 0; -#endif /* CONFIG_HAVE_HW_BREAKPOINT */ -#endif /* CONFIG_PPC_ADV_DEBUG_REGS */ + ppc_gethwdinfo(&dbginfo); if (copy_to_user(datavp, &dbginfo, sizeof(struct ppc_debug_info))) |