1 /* ptrace.h: ptrace() relevant definitions
3 * Copyright (C) 2003 Red Hat, Inc. All Rights Reserved.
4 * Written by David Howells (dhowells@redhat.com)
6 * This program is free software; you can redistribute it and/or
7 * modify it under the terms of the GNU General Public License
8 * as published by the Free Software Foundation; either version
9 * 2 of the License, or (at your option) any later version.
14 #include <asm/registers.h>
16 #define in_syscall(regs) (((regs)->tbr & TBR_TT) == TBR_TT_TRAP0)
27 #define PT__STATUS 7 /* exception status */
28 #define PT_SYSCALLNO 8 /* syscall number or -1 */
29 #define PT_ORIG_GR8 9 /* saved GR8 for signal handling */
35 #define PT_GR(j) ( 14 + (j)) /* GRj for 0<=j<=63 */
36 #define PT_FR(j) ( 78 + (j)) /* FRj for 0<=j<=63 */
37 #define PT_FNER(j) (142 + (j)) /* FNERj for 0<=j<=1 */
38 #define PT_MSR(j) (144 + (j)) /* MSRj for 0<=j<=2 */
39 #define PT_ACC(j) (146 + (j)) /* ACCj for 0<=j<=7 */
40 #define PT_ACCG(jklm) (154 + (jklm)) /* ACCGjklm for 0<=jklm<=1 (reads four regs per slot) */
41 #define PT_FSR(j) (156 + (j)) /* FSRj for 0<=j<=0 */
45 #define PT_TBR PT_GR(0)
46 #define PT_SP PT_GR(1)
47 #define PT_FP PT_GR(2)
48 #define PT_PREV_FRAME PT_GR(28) /* previous exception frame pointer (old gr28 value) */
49 #define PT_CURR_TASK PT_GR(29) /* current task */
52 /* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
53 #define PTRACE_GETREGS 12
54 #define PTRACE_SETREGS 13
55 #define PTRACE_GETFPREGS 14
56 #define PTRACE_SETFPREGS 15
57 #define PTRACE_GETFDPIC 31 /* get the ELF fdpic loadmap address */
59 #define PTRACE_GETFDPIC_EXEC 0 /* [addr] request the executable loadmap */
60 #define PTRACE_GETFDPIC_INTERP 1 /* [addr] request the interpreter loadmap */
65 * we dedicate GR28 to keeping a pointer to the current exception frame
66 * - gr28 is destroyed on entry to the kernel from userspace
68 register struct pt_regs *__frame asm("gr28");
70 #define user_mode(regs) (!((regs)->psr & PSR_S))
71 #define instruction_pointer(regs) ((regs)->pc)
73 extern unsigned long user_stack(const struct pt_regs *);
74 extern void show_regs(struct pt_regs *);
75 #define profile_pc(regs) ((regs)->pc)
77 #endif /* !__ASSEMBLY__ */
78 #endif /* _ASM_PTRACE_H */