diff options
Diffstat (limited to 'arch/sh/kernel/kgdb.c')
| -rw-r--r-- | arch/sh/kernel/kgdb.c | 23 |
1 files changed, 23 insertions, 0 deletions
diff --git a/arch/sh/kernel/kgdb.c b/arch/sh/kernel/kgdb.c index d25b5ed68b24..ba8e76325d12 100644 --- a/arch/sh/kernel/kgdb.c +++ b/arch/sh/kernel/kgdb.c @@ -222,8 +222,31 @@ char *dbg_get_reg(int regno, void *mem, struct pt_regs *regs) void sleeping_thread_to_gdb_regs(unsigned long *gdb_regs, struct task_struct *p) { + struct pt_regs *thread_regs = task_pt_regs(p); + int reg; + + /* Initialize to zero */ + for (reg = 0; reg < DBG_MAX_REG_NUM; reg++) + gdb_regs[reg] = 0; + + /* + * Copy out GP regs 8 to 14. + * + * switch_to() relies on SR.RB toggling, so regs 0->7 are banked + * and need privileged instructions to get to. The r15 value we + * fetch from the thread info directly. + */ + for (reg = GDB_R8; reg < GDB_R15; reg++) + gdb_regs[reg] = thread_regs->regs[reg]; + gdb_regs[GDB_R15] = p->thread.sp; gdb_regs[GDB_PC] = p->thread.pc; + + /* + * Additional registers we have context for + */ + gdb_regs[GDB_PR] = thread_regs->pr; + gdb_regs[GDB_GBR] = thread_regs->gbr; } int kgdb_arch_handle_exception(int e_vector, int signo, int err_code, |