linux/arch/alpha/include/uapi/asm/ptrace.h
David Howells 96433f6ee4 UAPI: (Scripted) Disintegrate arch/alpha/include/asm
Signed-off-by: David Howells <dhowells@redhat.com>
Acked-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Thomas Gleixner <tglx@linutronix.de>
Acked-by: Michael Kerrisk <mtk.manpages@gmail.com>
Acked-by: Paul E. McKenney <paulmck@linux.vnet.ibm.com>
Acked-by: Dave Jones <davej@redhat.com>
Acked-by: Michael Cree <mcree@orcon.net.nz>
Acked-by: Matt Turner <mattst88@gmail.com>
2012-12-17 14:12:19 +00:00

71 lines
1.6 KiB
C

#ifndef _UAPI_ASMAXP_PTRACE_H
#define _UAPI_ASMAXP_PTRACE_H
/*
* This struct defines the way the registers are stored on the
* kernel stack during a system call or other kernel entry
*
* NOTE! I want to minimize the overhead of system calls, so this
* struct has as little information as possible. I does not have
*
* - floating point regs: the kernel doesn't change those
* - r9-15: saved by the C compiler
*
* This makes "fork()" and "exec()" a bit more complex, but should
* give us low system call latency.
*/
struct pt_regs {
unsigned long r0;
unsigned long r1;
unsigned long r2;
unsigned long r3;
unsigned long r4;
unsigned long r5;
unsigned long r6;
unsigned long r7;
unsigned long r8;
unsigned long r19;
unsigned long r20;
unsigned long r21;
unsigned long r22;
unsigned long r23;
unsigned long r24;
unsigned long r25;
unsigned long r26;
unsigned long r27;
unsigned long r28;
unsigned long hae;
/* JRP - These are the values provided to a0-a2 by PALcode */
unsigned long trap_a0;
unsigned long trap_a1;
unsigned long trap_a2;
/* These are saved by PAL-code: */
unsigned long ps;
unsigned long pc;
unsigned long gp;
unsigned long r16;
unsigned long r17;
unsigned long r18;
};
/*
* This is the extended stack used by signal handlers and the context
* switcher: it's pushed after the normal "struct pt_regs".
*/
struct switch_stack {
unsigned long r9;
unsigned long r10;
unsigned long r11;
unsigned long r12;
unsigned long r13;
unsigned long r14;
unsigned long r15;
unsigned long r26;
unsigned long fp[32]; /* fp[31] is fpcr */
};
#endif /* _UAPI_ASMAXP_PTRACE_H */