diff options
Diffstat (limited to 'include/asm-m68k/ptrace.h')
-rw-r--r-- | include/asm-m68k/ptrace.h | 108 |
1 files changed, 108 insertions, 0 deletions
diff --git a/include/asm-m68k/ptrace.h b/include/asm-m68k/ptrace.h new file mode 100644 index 0000000000..343a9f497d --- /dev/null +++ b/include/asm-m68k/ptrace.h @@ -0,0 +1,108 @@ +#ifndef _M68K_PTRACE_H +#define _M68K_PTRACE_H + +/* + * This struct defines the way the registers are stored on the + * kernel stack during a system call or other kernel entry. + * + * this should only contain volatile regs + * since we can keep non-volatile in the thread_struct + * should set this up when only volatiles are saved + * by intr code. + * + * Since this is going on the stack, *CARE MUST BE TAKEN* to insure + * that the overall structure is a multiple of 16 bytes in length. + * + * Note that the offsets of the fields in this struct correspond with + * the PT_* values below. This simplifies arch/ppc/kernel/ptrace.c. + */ + +#include <linux/config.h> + +#ifndef __ASSEMBLY__ +#ifdef CONFIG_M68K64BRIDGE +#define M68K_REG unsigned long /*long*/ +#else +#define M68K_REG unsigned long +#endif +struct pt_regs { + M68K_REG gpr[32]; + M68K_REG nip; + M68K_REG msr; + M68K_REG orig_gpr3; /* Used for restarting system calls */ + M68K_REG ctr; + M68K_REG link; + M68K_REG xer; + M68K_REG ccr; + M68K_REG mq; /* 601 only (not used at present) */ + /* Used on APUS to hold IPL value. */ + M68K_REG trap; /* Reason for being here */ + M68K_REG dar; /* Fault registers */ + M68K_REG dsisr; + M68K_REG result; /* Result of a system call */ +}; +#endif + +#define STACK_FRAME_OVERHEAD 16 /* size of minimum stack frame */ + +/* Size of stack frame allocated when calling signal handler. */ +#define __SIGNAL_FRAMESIZE 64 + +#define instruction_pointer(regs) ((regs)->nip) +#define user_mode(regs) (((regs)->msr & MSR_PR) != 0) + +/* + * Offsets used by 'ptrace' system call interface. + * These can't be changed without breaking binary compatibility + * with MkLinux, etc. + */ +#define PT_R0 0 +#define PT_R1 1 +#define PT_R2 2 +#define PT_R3 3 +#define PT_R4 4 +#define PT_R5 5 +#define PT_R6 6 +#define PT_R7 7 +#define PT_R8 8 +#define PT_R9 9 +#define PT_R10 10 +#define PT_R11 11 +#define PT_R12 12 +#define PT_R13 13 +#define PT_R14 14 +#define PT_R15 15 +#define PT_R16 16 +#define PT_R17 17 +#define PT_R18 18 +#define PT_R19 19 +#define PT_R20 20 +#define PT_R21 21 +#define PT_R22 22 +#define PT_R23 23 +#define PT_R24 24 +#define PT_R25 25 +#define PT_R26 26 +#define PT_R27 27 +#define PT_R28 28 +#define PT_R29 29 +#define PT_R30 30 +#define PT_R31 31 + +#define PT_NIP 32 +#define PT_MSR 33 +#ifdef __KERNEL__ +#define PT_ORIG_R3 34 +#endif +#define PT_CTR 35 +#define PT_LNK 36 +#define PT_XER 37 +#define PT_CCR 38 +#define PT_MQ 39 + +#define PT_FPR0 48 /* each FP reg occupies 2 slots in this space */ +#define PT_FPR31 (PT_FPR0 + 2*31) +#define PT_FPSCR (PT_FPR0 + 2*32 + 1) + +#endif + |