1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linu !! 1 /* SPDX-License-Identifier: GPL-2.0 WITH Linux-syscall-note */
2 /* !! 2 #ifndef _UAPI_ASMAXP_PTRACE_H
3 * Author: Hanlu Li <lihanlu@loongson.cn> !! 3 #define _UAPI_ASMAXP_PTRACE_H
4 * Huacai Chen <chenhuacai@loongson.cn <<
5 * <<
6 * Copyright (C) 2020-2022 Loongson Technology <<
7 */ <<
8 #ifndef _UAPI_ASM_PTRACE_H <<
9 #define _UAPI_ASM_PTRACE_H <<
10 4
11 #include <linux/types.h> <<
12 <<
13 #ifndef __KERNEL__ <<
14 #include <stdint.h> <<
15 #endif <<
16 5
17 /* 6 /*
18 * For PTRACE_{POKE,PEEK}USR. 0 - 31 are GPRs, !! 7 * This struct defines the way the registers are stored on the
19 * 32 is syscall's original ARG0, 33 is PC, 34 !! 8 * kernel stack during a system call or other kernel entry
>> 9 *
>> 10 * NOTE! I want to minimize the overhead of system calls, so this
>> 11 * struct has as little information as possible. It does not have
>> 12 *
>> 13 * - floating point regs: the kernel doesn't change those
>> 14 * - r9-15: saved by the C compiler
>> 15 *
>> 16 * This makes "fork()" and "exec()" a bit more complex, but should
>> 17 * give us low system call latency.
20 */ 18 */
21 #define GPR_BASE 0 <<
22 #define GPR_NUM 32 <<
23 #define GPR_END (GPR_BASE + GPR_NUM - <<
24 #define ARG0 (GPR_END + 1) <<
25 #define PC (GPR_END + 2) <<
26 #define BADVADDR (GPR_END + 3) <<
27 <<
28 #define NUM_FPU_REGS 32 <<
29 <<
30 struct user_pt_regs { <<
31 /* Main processor registers. */ <<
32 unsigned long regs[32]; <<
33 <<
34 /* Original syscall arg0. */ <<
35 unsigned long orig_a0; <<
36 <<
37 /* Special CSR registers. */ <<
38 unsigned long csr_era; <<
39 unsigned long csr_badv; <<
40 unsigned long reserved[10]; <<
41 } __attribute__((aligned(8))); <<
42 <<
43 struct user_fp_state { <<
44 uint64_t fpr[32]; <<
45 uint64_t fcc; <<
46 uint32_t fcsr; <<
47 }; <<
48 <<
49 struct user_lsx_state { <<
50 /* 32 registers, 128 bits width per re <<
51 uint64_t vregs[32*2]; <<
52 }; <<
53 <<
54 struct user_lasx_state { <<
55 /* 32 registers, 256 bits width per re <<
56 uint64_t vregs[32*4]; <<
57 }; <<
58 19
59 struct user_lbt_state { !! 20 struct pt_regs {
60 uint64_t scr[4]; !! 21 unsigned long r0;
61 uint32_t eflags; !! 22 unsigned long r1;
62 uint32_t ftop; !! 23 unsigned long r2;
>> 24 unsigned long r3;
>> 25 unsigned long r4;
>> 26 unsigned long r5;
>> 27 unsigned long r6;
>> 28 unsigned long r7;
>> 29 unsigned long r8;
>> 30 unsigned long r19;
>> 31 unsigned long r20;
>> 32 unsigned long r21;
>> 33 unsigned long r22;
>> 34 unsigned long r23;
>> 35 unsigned long r24;
>> 36 unsigned long r25;
>> 37 unsigned long r26;
>> 38 unsigned long r27;
>> 39 unsigned long r28;
>> 40 unsigned long hae;
>> 41 /* JRP - These are the values provided to a0-a2 by PALcode */
>> 42 unsigned long trap_a0;
>> 43 unsigned long trap_a1;
>> 44 unsigned long trap_a2;
>> 45 /* These are saved by PAL-code: */
>> 46 unsigned long ps;
>> 47 unsigned long pc;
>> 48 unsigned long gp;
>> 49 unsigned long r16;
>> 50 unsigned long r17;
>> 51 unsigned long r18;
63 }; 52 };
64 53
65 struct user_watch_state { !! 54 /*
66 uint64_t dbg_info; !! 55 * This is the extended stack used by signal handlers and the context
67 struct { !! 56 * switcher: it's pushed after the normal "struct pt_regs".
68 uint64_t addr; !! 57 */
69 uint64_t mask; !! 58 struct switch_stack {
70 uint32_t ctrl; !! 59 unsigned long r9;
71 uint32_t pad; !! 60 unsigned long r10;
72 } dbg_regs[8]; !! 61 unsigned long r11;
>> 62 unsigned long r12;
>> 63 unsigned long r13;
>> 64 unsigned long r14;
>> 65 unsigned long r15;
>> 66 unsigned long r26;
>> 67 #ifndef __KERNEL__
>> 68 unsigned long fp[32]; /* fp[31] is fpcr */
>> 69 #endif
73 }; 70 };
74 71
75 #define PTRACE_SYSEMU 0x1f <<
76 #define PTRACE_SYSEMU_SINGLESTEP 0x20 <<
77 72
78 #endif /* _UAPI_ASM_PTRACE_H */ !! 73 #endif /* _UAPI_ASMAXP_PTRACE_H */
79 74
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