diff options
Diffstat (limited to 'include/asm-cris/ptrace.h')
-rw-r--r-- | include/asm-cris/ptrace.h | 99 |
1 files changed, 99 insertions, 0 deletions
diff --git a/include/asm-cris/ptrace.h b/include/asm-cris/ptrace.h new file mode 100644 index 000000000..25bc1f5a7 --- /dev/null +++ b/include/asm-cris/ptrace.h @@ -0,0 +1,99 @@ +#ifndef _CRIS_PTRACE_H +#define _CRIS_PTRACE_H + +/* Register numbers in the ptrace system call interface */ + +#define PT_FRAMETYPE 0 +#define PT_ORIG_R10 1 +#define PT_R13 2 +#define PT_R12 3 +#define PT_R11 4 +#define PT_R10 5 +#define PT_R9 6 +#define PT_R8 7 +#define PT_R7 8 +#define PT_R6 9 +#define PT_R5 10 +#define PT_R4 11 +#define PT_R3 12 +#define PT_R2 13 +#define PT_R1 14 +#define PT_R0 15 +#define PT_MOF 16 +#define PT_DCCR 17 +#define PT_SRP 18 +#define PT_IRP 19 +#define PT_MAX 19 + +#define PT_USP 42 /* special case - USP is not in the pt_regs */ + +/* Frame types */ + +#define CRIS_FRAME_NORMAL 0 /* normal frame like pt_regs struct */ +#define CRIS_FRAME_BUSFAULT 1 /* SBFS frame of 4 longwords on top, including irp */ +#define CRIS_FRAME_FIXUP 2 /* SBFS frame which should do a normal return, not RBF */ + +/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */ +#define PTRACE_GETREGS 12 +#define PTRACE_SETREGS 13 + +/* pt_regs not only specifices the format in the user-struct during + * ptrace but is also the frame format used in the kernel prologue/epilogues + * themselves + */ + +struct pt_regs { + unsigned long frametype; /* type of stackframe */ + unsigned long orig_r10; + /* pushed by movem r13, [sp] in SAVE_ALL, movem pushes backwards */ + unsigned long r13; /* 8 */ + unsigned long r12; /* 12 */ + unsigned long r11; /* 16 */ + unsigned long r10; /* 20 */ + unsigned long r9; + unsigned long r8; + unsigned long r7; + unsigned long r6; + unsigned long r5; + unsigned long r4; + unsigned long r3; + unsigned long r2; + unsigned long r1; + unsigned long r0; + unsigned long mof; + unsigned long dccr; + unsigned long srp; + unsigned long irp; +}; + +/* switch_stack is the extra stuff pushed onto the stack in _resume (entry.S) when + doing a context-switch. it is used (apart from in resume) when a new thread is made + and we need to make _resume (which is starting it for the first time) realise what + is going on. + + actually, the use is very close to the thread struct (TSS) in that both the switch_stack + and the TSS are used to keep thread stuff when switching in _resume. +*/ + +struct switch_stack { + unsigned long r9; + unsigned long r8; + unsigned long r7; + unsigned long r6; + unsigned long r5; + unsigned long r4; + unsigned long r3; + unsigned long r2; + unsigned long r1; + unsigned long r0; + unsigned long return_ip; /* ip that _resume will return to */ +}; + +#ifdef __KERNEL__ +/* bit 8 is user-mode flag */ +#define user_mode(regs) ((regs)->dccr & 0x100) +#define instruction_pointer(regs) ((regs)->irp) +extern void show_regs(struct pt_regs *); +#endif + +#endif /* _CRIS_PTRACE_H */ |