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a79ebea620
In uapi/asm/ptrace.h, a user version of pt_regs is defined wrapped in
ifndef __KERNEL__. This structure definition does not match anything
used by any kernel API, in particular it does not match the format used
by PTRACE_{GET,SET}REGS.
Therefore, replace the structure definition with one matching what is
used by PTRACE_{GET,SET}REGS. The format used by these is the same for
both 32-bit and 64-bit.
Also, change the implementation of PTRACE_{GET,SET}REGS to use this new
structure definition. The structure is renamed to user_pt_regs when
__KERNEL__ is defined to avoid conflicts with the kernel's own pt_regs.
Signed-off-by: Alex Smith <alex@alex-smith.me.uk>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/7457/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>
107 lines
2.6 KiB
C
107 lines
2.6 KiB
C
/*
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* This file is subject to the terms and conditions of the GNU General Public
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* License. See the file "COPYING" in the main directory of this archive
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* for more details.
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*
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* Copyright (C) 1994, 95, 96, 97, 98, 99, 2000 by Ralf Baechle
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* Copyright (C) 1999, 2000 Silicon Graphics, Inc.
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*/
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#ifndef _UAPI_ASM_PTRACE_H
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#define _UAPI_ASM_PTRACE_H
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/* 0 - 31 are integer registers, 32 - 63 are fp registers. */
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#define FPR_BASE 32
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#define PC 64
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#define CAUSE 65
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#define BADVADDR 66
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#define MMHI 67
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#define MMLO 68
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#define FPC_CSR 69
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#define FPC_EIR 70
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#define DSP_BASE 71 /* 3 more hi / lo register pairs */
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#define DSP_CONTROL 77
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#define ACX 78
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/*
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* This struct defines the registers as used by PTRACE_{GET,SET}REGS. The
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* format is the same for both 32- and 64-bit processes. Registers for 32-bit
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* processes are sign extended.
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*/
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#ifdef __KERNEL__
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struct user_pt_regs {
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#else
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struct pt_regs {
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#endif
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/* Saved main processor registers. */
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__u64 regs[32];
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/* Saved special registers. */
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__u64 lo;
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__u64 hi;
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__u64 cp0_epc;
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__u64 cp0_badvaddr;
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__u64 cp0_status;
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__u64 cp0_cause;
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} __attribute__ ((aligned (8)));
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/* Arbitrarily choose the same ptrace numbers as used by the Sparc code. */
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#define PTRACE_GETREGS 12
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#define PTRACE_SETREGS 13
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#define PTRACE_GETFPREGS 14
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#define PTRACE_SETFPREGS 15
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/* #define PTRACE_GETFPXREGS 18 */
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/* #define PTRACE_SETFPXREGS 19 */
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#define PTRACE_OLDSETOPTIONS 21
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#define PTRACE_GET_THREAD_AREA 25
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#define PTRACE_SET_THREAD_AREA 26
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/* Calls to trace a 64bit program from a 32bit program. */
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#define PTRACE_PEEKTEXT_3264 0xc0
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#define PTRACE_PEEKDATA_3264 0xc1
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#define PTRACE_POKETEXT_3264 0xc2
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#define PTRACE_POKEDATA_3264 0xc3
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#define PTRACE_GET_THREAD_AREA_3264 0xc4
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/* Read and write watchpoint registers. */
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enum pt_watch_style {
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pt_watch_style_mips32,
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pt_watch_style_mips64
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};
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struct mips32_watch_regs {
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unsigned int watchlo[8];
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/* Lower 16 bits of watchhi. */
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unsigned short watchhi[8];
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/* Valid mask and I R W bits.
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* bit 0 -- 1 if W bit is usable.
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* bit 1 -- 1 if R bit is usable.
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* bit 2 -- 1 if I bit is usable.
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* bits 3 - 11 -- Valid watchhi mask bits.
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*/
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unsigned short watch_masks[8];
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/* The number of valid watch register pairs. */
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unsigned int num_valid;
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} __attribute__((aligned(8)));
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struct mips64_watch_regs {
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unsigned long long watchlo[8];
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unsigned short watchhi[8];
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unsigned short watch_masks[8];
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unsigned int num_valid;
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} __attribute__((aligned(8)));
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struct pt_watch_regs {
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enum pt_watch_style style;
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union {
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struct mips32_watch_regs mips32;
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struct mips64_watch_regs mips64;
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};
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};
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#define PTRACE_GET_WATCH_REGS 0xd0
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#define PTRACE_SET_WATCH_REGS 0xd1
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#endif /* _UAPI_ASM_PTRACE_H */
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