From 2ce36bfa6a0904524baed699ad78706e50295f84 Mon Sep 17 00:00:00 2001 From: Guo Ren Date: Wed, 5 Sep 2018 14:25:19 +0800 Subject: csky: Debug and Ptrace GDB This patch adds arch ptrace implementation, stack dump and bug.h. Signed-off-by: Guo Ren Reviewed-by: Arnd Bergmann --- arch/csky/include/asm/bug.h | 26 +++++++++ arch/csky/include/uapi/asm/ptrace.h | 104 ++++++++++++++++++++++++++++++++++++ 2 files changed, 130 insertions(+) create mode 100644 arch/csky/include/asm/bug.h create mode 100644 arch/csky/include/uapi/asm/ptrace.h (limited to 'arch/csky/include') diff --git a/arch/csky/include/asm/bug.h b/arch/csky/include/asm/bug.h new file mode 100644 index 000000000000..bd7b3235bb84 --- /dev/null +++ b/arch/csky/include/asm/bug.h @@ -0,0 +1,26 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef __ASM_CSKY_BUG_H +#define __ASM_CSKY_BUG_H + +#include +#include +#include + +#define BUG() \ +do { \ + asm volatile ("bkpt\n"); \ + unreachable(); \ +} while (0) + +#define HAVE_ARCH_BUG + +#include + +struct pt_regs; + +void die_if_kernel(char *str, struct pt_regs *regs, int nr); +void show_regs(struct pt_regs *regs); + +#endif /* __ASM_CSKY_BUG_H */ diff --git a/arch/csky/include/uapi/asm/ptrace.h b/arch/csky/include/uapi/asm/ptrace.h new file mode 100644 index 000000000000..f10d02c8b09e --- /dev/null +++ b/arch/csky/include/uapi/asm/ptrace.h @@ -0,0 +1,104 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +// Copyright (C) 2018 Hangzhou C-SKY Microsystems co.,ltd. + +#ifndef _CSKY_PTRACE_H +#define _CSKY_PTRACE_H + +#ifndef __ASSEMBLY__ + +struct pt_regs { + unsigned long tls; + unsigned long lr; + unsigned long pc; + unsigned long sr; + unsigned long usp; + + /* + * a0, a1, a2, a3: + * abiv1: r2, r3, r4, r5 + * abiv2: r0, r1, r2, r3 + */ + unsigned long orig_a0; + unsigned long a0; + unsigned long a1; + unsigned long a2; + unsigned long a3; + + /* + * ABIV2: r4 ~ r13 + * ABIV1: r6 ~ r14, r1 + */ + unsigned long regs[10]; + +#if defined(__CSKYABIV2__) + /* r16 ~ r30 */ + unsigned long exregs[15]; + + unsigned long rhi; + unsigned long rlo; + unsigned long pad; /* reserved */ +#endif +}; + +struct user_fp { + unsigned long vr[96]; + unsigned long fcr; + unsigned long fesr; + unsigned long fid; + unsigned long reserved; +}; + +/* + * Switch stack for switch_to after push pt_regs. + * + * ABI_CSKYV2: r4 ~ r11, r15 ~ r17, r26 ~ r30; + * ABI_CSKYV1: r8 ~ r14, r15; + */ +struct switch_stack { +#if defined(__CSKYABIV2__) + unsigned long r4; + unsigned long r5; + unsigned long r6; + unsigned long r7; + unsigned long r8; + unsigned long r9; + unsigned long r10; + unsigned long r11; +#else + unsigned long r8; + unsigned long r9; + unsigned long r10; + unsigned long r11; + unsigned long r12; + unsigned long r13; + unsigned long r14; +#endif + unsigned long r15; +#if defined(__CSKYABIV2__) + unsigned long r16; + unsigned long r17; + unsigned long r26; + unsigned long r27; + unsigned long r28; + unsigned long r29; + unsigned long r30; +#endif +}; + +#ifdef __KERNEL__ + +#define PS_S 0x80000000 /* Supervisor Mode */ + +#define arch_has_single_step() (1) +#define current_pt_regs() \ +({ (struct pt_regs *)((char *)current_thread_info() + THREAD_SIZE) - 1; }) + +#define user_stack_pointer(regs) ((regs)->usp) + +#define user_mode(regs) (!((regs)->sr & PS_S)) +#define instruction_pointer(regs) ((regs)->pc) +#define profile_pc(regs) instruction_pointer(regs) + +#endif /* __KERNEL__ */ +#endif /* __ASSEMBLY__ */ +#endif /* _CSKY_PTRACE_H */ -- cgit v1.2.3