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csky: Debug and Ptrace GDB

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This patch adds arch ptrace implementation, stack dump and bug.h.

Signed-off-by: Guo Ren <ren_guo@c-sky.com>
Reviewed-by: Arnd Bergmann <arnd@arndb.de>
This commit is contained in:
Guo Ren
2018-09-05 14:25:19 +08:00
parent da55128194
commit 2ce36bfa6a
4 changed files with 510 additions and 0 deletions
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104
arch/csky/include/uapi/asm/ptrace.h Normal file
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/* 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 */