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| author | Douglas Anderson <dianders@chromium.org> | 2018-03-05 15:43:09 -0800 |
|---|---|---|
| committer | Will Deacon <will.deacon@arm.com> | 2018-03-06 18:52:34 +0000 |
| commit | 24153c03d4f5dc4ac0ccd446a9636c269c1d4a02 (patch) | |
| tree | 36b1284637808397c4893db575e42092dfd55eb8 /arch/arm64/kernel/kgdb.c | |
| parent | 1212f7a16af492d59304ba3abccbcc5b5e41423e (diff) | |
| download | lwn-24153c03d4f5dc4ac0ccd446a9636c269c1d4a02.tar.gz lwn-24153c03d4f5dc4ac0ccd446a9636c269c1d4a02.zip | |
arm64/debug: Fix registers on sleeping tasks
This is the equivalent of commit 001bf455d206 ("ARM: 8428/1: kgdb: Fix
registers on sleeping tasks") but for arm64. Nuff said.
...well, perhaps I could also add that task_pt_regs are userspace
registers and that's not what kgdb is supposed to be reporting. We're
supposed to be reporting kernel registers.
Signed-off-by: Douglas Anderson <dianders@chromium.org>
Signed-off-by: Will Deacon <will.deacon@arm.com>
Diffstat (limited to 'arch/arm64/kernel/kgdb.c')
| -rw-r--r-- | arch/arm64/kernel/kgdb.c | 21 |
1 files changed, 16 insertions, 5 deletions
diff --git a/arch/arm64/kernel/kgdb.c b/arch/arm64/kernel/kgdb.c index 2122cd187f19..a20de58061a8 100644 --- a/arch/arm64/kernel/kgdb.c +++ b/arch/arm64/kernel/kgdb.c @@ -138,14 +138,25 @@ int dbg_set_reg(int regno, void *mem, struct pt_regs *regs) void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *task) { - struct pt_regs *thread_regs; + struct cpu_context *cpu_context = &task->thread.cpu_context; /* Initialize to zero */ memset((char *)gdb_regs, 0, NUMREGBYTES); - thread_regs = task_pt_regs(task); - memcpy((void *)gdb_regs, (void *)thread_regs->regs, GP_REG_BYTES); - /* Special case for PSTATE (check comments in asm/kgdb.h for details) */ - dbg_get_reg(33, gdb_regs + GP_REG_BYTES, thread_regs); + + gdb_regs[19] = cpu_context->x19; + gdb_regs[20] = cpu_context->x20; + gdb_regs[21] = cpu_context->x21; + gdb_regs[22] = cpu_context->x22; + gdb_regs[23] = cpu_context->x23; + gdb_regs[24] = cpu_context->x24; + gdb_regs[25] = cpu_context->x25; + gdb_regs[26] = cpu_context->x26; + gdb_regs[27] = cpu_context->x27; + gdb_regs[28] = cpu_context->x28; + gdb_regs[29] = cpu_context->fp; + + gdb_regs[31] = cpu_context->sp; + gdb_regs[32] = cpu_context->pc; } void kgdb_arch_set_pc(struct pt_regs *regs, unsigned long pc) |