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c459dbf294
This converts the single stepping done by sh/sh64 ptrace implementations to use the generic user_enable/disable_single_step(), and subsequently rips out a lot of ptrace request cases that are now handled generically. Signed-off-by: Paul Mundt <lethal@linux-sh.org>
140 lines
3.0 KiB
C
140 lines
3.0 KiB
C
#ifndef __ASM_SH_PTRACE_H
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#define __ASM_SH_PTRACE_H
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/*
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* Copyright (C) 1999, 2000 Niibe Yutaka
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*
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*/
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#if defined(__SH5__)
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struct pt_regs {
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unsigned long long pc;
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unsigned long long sr;
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unsigned long long syscall_nr;
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unsigned long long regs[63];
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unsigned long long tregs[8];
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unsigned long long pad[2];
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};
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#else
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/*
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* GCC defines register number like this:
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* -----------------------------
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* 0 - 15 are integer registers
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* 17 - 22 are control/special registers
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* 24 - 39 fp registers
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* 40 - 47 xd registers
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* 48 - fpscr register
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* -----------------------------
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*
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* We follows above, except:
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* 16 --- program counter (PC)
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* 22 --- syscall #
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* 23 --- floating point communication register
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*/
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#define REG_REG0 0
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#define REG_REG15 15
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#define REG_PC 16
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#define REG_PR 17
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#define REG_SR 18
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#define REG_GBR 19
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#define REG_MACH 20
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#define REG_MACL 21
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#define REG_SYSCALL 22
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#define REG_FPREG0 23
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#define REG_FPREG15 38
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#define REG_XFREG0 39
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#define REG_XFREG15 54
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#define REG_FPSCR 55
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#define REG_FPUL 56
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/*
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* This struct defines the way the registers are stored on the
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* kernel stack during a system call or other kernel entry.
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*/
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struct pt_regs {
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unsigned long regs[16];
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unsigned long pc;
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unsigned long pr;
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unsigned long sr;
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unsigned long gbr;
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unsigned long mach;
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unsigned long macl;
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long tra;
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};
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/*
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* This struct defines the way the DSP registers are stored on the
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* kernel stack during a system call or other kernel entry.
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*/
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struct pt_dspregs {
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unsigned long a1;
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unsigned long a0g;
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unsigned long a1g;
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unsigned long m0;
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unsigned long m1;
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unsigned long a0;
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unsigned long x0;
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unsigned long x1;
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unsigned long y0;
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unsigned long y1;
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unsigned long dsr;
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unsigned long rs;
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unsigned long re;
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unsigned long mod;
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};
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#define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
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#define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
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#define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
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#define PTRACE_GETDSPREGS 55
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#define PTRACE_SETDSPREGS 56
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#endif
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#ifdef __KERNEL__
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#include <asm/addrspace.h>
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#define user_mode(regs) (((regs)->sr & 0x40000000)==0)
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#define instruction_pointer(regs) ((unsigned long)(regs)->pc)
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extern void show_regs(struct pt_regs *);
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/*
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* These are defined as per linux/ptrace.h.
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*/
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struct task_struct;
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#define arch_has_single_step() (1)
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extern void user_enable_single_step(struct task_struct *);
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extern void user_disable_single_step(struct task_struct *);
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#ifdef CONFIG_SH_DSP
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#define task_pt_regs(task) \
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((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
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- sizeof(struct pt_dspregs) - sizeof(unsigned long)) - 1)
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#else
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#define task_pt_regs(task) \
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((struct pt_regs *) (task_stack_page(task) + THREAD_SIZE \
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- sizeof(unsigned long)) - 1)
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#endif
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static inline unsigned long profile_pc(struct pt_regs *regs)
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{
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unsigned long pc = instruction_pointer(regs);
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#ifdef P2SEG
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if (pc >= P2SEG && pc < P3SEG)
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pc -= 0x20000000;
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#endif
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return pc;
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}
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#endif /* __KERNEL__ */
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#endif /* __ASM_SH_PTRACE_H */
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