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[/] [or1k/] [tags/] [before_ORP/] [uclinux/] [uClinux-2.0.x/] [include/] [asm-alpha/] [ptrace.h] - Rev 1765
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#ifndef _ASMAXP_PTRACE_H #define _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 */ }; #ifdef __KERNEL__ #define user_mode(regs) ((regs)->ps & 8) #define instruction_pointer(regs) ((regs)->pc) extern void show_regs(struct pt_regs *); #endif #endif