projects / deliverable / linux.git / blame
| Commit | Line | Data |
|---|---|---|
| 3be80aae VG |
1 | /* |
| 2 | * Copyright (C) 2004, 2007-2010, 2011-2012 Synopsys, Inc. (www.synopsys.com) | |
| 3 | * | |
| 4 | * This program is free software; you can redistribute it and/or modify | |
| 5 | * it under the terms of the GNU General Public License version 2 as | |
| 6 | * published by the Free Software Foundation. | |
| 7 | * | |
| 8 | * Amit Bhor, Sameer Dhavale: Codito Technologies 2004 | |
| 9 | */ | |
| 3be80aae VG |
10 | #ifndef __ASM_ARC_PTRACE_H |
| 11 | #define __ASM_ARC_PTRACE_H | |
| 12 | ||
| 8c2f4a8d | 13 | #include <uapi/asm/ptrace.h> |
| 3be80aae VG |
14 | |
| 15 | #ifndef __ASSEMBLY__ | |
| 16 | ||
| 17 | /* THE pt_regs: Defines how regs are saved during entry into kernel */ | |
| 18 | ||
| 19 | struct pt_regs { | |
| 20 | /* | |
| 21 | * 1 word gutter after reg-file has been saved | |
| 22 | * Technically not needed, Since SP always points to a "full" location | |
| 23 | * (vs. "empty"). But pt_regs is shared with tools.... | |
| 24 | */ | |
| 25 | long res; | |
| 26 | ||
| 27 | /* Real registers */ | |
| 28 | long bta; /* bta_l1, bta_l2, erbta */ | |
| 29 | long lp_start; | |
| 30 | long lp_end; | |
| 31 | long lp_count; | |
| 32 | long status32; /* status32_l1, status32_l2, erstatus */ | |
| 33 | long ret; /* ilink1, ilink2 or eret */ | |
| 34 | long blink; | |
| 35 | long fp; | |
| 36 | long r26; /* gp */ | |
| 37 | long r12; | |
| 38 | long r11; | |
| 39 | long r10; | |
| 40 | long r9; | |
| 41 | long r8; | |
| 42 | long r7; | |
| 43 | long r6; | |
| 44 | long r5; | |
| 45 | long r4; | |
| 46 | long r3; | |
| 47 | long r2; | |
| 48 | long r1; | |
| 49 | long r0; | |
| 50 | long sp; /* user/kernel sp depending on where we came from */ | |
| 51 | long orig_r0; | |
| 5c39c0ab VG |
52 | |
| 53 | /*to distinguish bet excp, syscall, irq */ | |
| 54 | union { | |
| 55 | #ifdef CONFIG_CPU_BIG_ENDIAN | |
| 56 | /* so that assembly code is same for LE/BE */ | |
| 57 | unsigned long orig_r8:16, event:16; | |
| 58 | #else | |
| 59 | unsigned long event:16, orig_r8:16; | |
| 60 | #endif | |
| 61 | long orig_r8_word; | |
| 62 | }; | |
| 3be80aae VG |
63 | }; |
| 64 | ||
| 65 | /* Callee saved registers - need to be saved only when you are scheduled out */ | |
| 66 | ||
| 67 | struct callee_regs { | |
| 68 | long res; /* Again this is not needed */ | |
| 69 | long r25; | |
| 70 | long r24; | |
| 71 | long r23; | |
| 72 | long r22; | |
| 73 | long r21; | |
| 74 | long r20; | |
| 75 | long r19; | |
| 76 | long r18; | |
| 77 | long r17; | |
| 78 | long r16; | |
| 79 | long r15; | |
| 80 | long r14; | |
| 81 | long r13; | |
| 82 | }; | |
| 83 | ||
| 84 | #define instruction_pointer(regs) ((regs)->ret) | |
| 85 | #define profile_pc(regs) instruction_pointer(regs) | |
| 86 | ||
| 87 | /* return 1 if user mode or 0 if kernel mode */ | |
| 88 | #define user_mode(regs) (regs->status32 & STATUS_U_MASK) | |
| 89 | ||
| 90 | #define user_stack_pointer(regs)\ | |
| 91 | ({ unsigned int sp; \ | |
| 92 | if (user_mode(regs)) \ | |
| 93 | sp = (regs)->sp;\ | |
| 94 | else \ | |
| 95 | sp = -1; \ | |
| 96 | sp; \ | |
| 97 | }) | |
| 4adeefe1 | 98 | |
| 2e651ea1 VG |
99 | /* return 1 if PC in delay slot */ |
| 100 | #define delay_mode(regs) ((regs->status32 & STATUS_DE_MASK) == STATUS_DE_MASK) | |
| 101 | ||
| 5c39c0ab VG |
102 | #define in_syscall(regs) (regs->event & orig_r8_IS_SCALL) |
| 103 | #define in_brkpt_trap(regs) (regs->event & orig_r8_IS_BRKPT) | |
| 4adeefe1 | 104 | |
| 55bb9480 VG |
105 | #define syscall_wont_restart(regs) (regs->event |= orig_r8_IS_SCALL_RESTARTED) |
| 106 | #define syscall_restartable(regs) !(regs->event & orig_r8_IS_SCALL_RESTARTED) | |
| 107 | ||
| bf90e1ea VG |
108 | #define current_pt_regs() \ |
| 109 | ({ \ | |
| 110 | /* open-coded current_thread_info() */ \ | |
| 111 | register unsigned long sp asm ("sp"); \ | |
| 112 | unsigned long pg_start = (sp & ~(THREAD_SIZE - 1)); \ | |
| 113 | (struct pt_regs *)(pg_start + THREAD_SIZE - 4) - 1; \ | |
| 114 | }) | |
| 115 | ||
| 4d86dfbb VG |
116 | static inline long regs_return_value(struct pt_regs *regs) |
| 117 | { | |
| 118 | return regs->r0; | |
| 119 | } | |
| 120 | ||
| 3be80aae VG |
121 | #endif /* !__ASSEMBLY__ */ |
| 122 | ||
| 5c39c0ab VG |
123 | #define orig_r8_IS_SCALL 0x0001 |
| 124 | #define orig_r8_IS_SCALL_RESTARTED 0x0002 | |
| 125 | #define orig_r8_IS_BRKPT 0x0004 | |
| 367f3fcd | 126 | #define orig_r8_IS_EXCPN 0x0008 |
| 5c39c0ab VG |
127 | #define orig_r8_IS_IRQ1 0x0010 |
| 128 | #define orig_r8_IS_IRQ2 0x0020 | |
| 129 | ||
| 3be80aae | 130 | #endif /* __ASM_PTRACE_H */ |