1 /* SPDX-License-Identifier: GPL-2.0+ WITH Linux-syscall-note */
2 /*
3  * Author: Hanlu Li <lihanlu@loongson.cn>
4  *         Huacai Chen <chenhuacai@loongson.cn>
5  *
6  * Copyright (C) 2020-2022 Loongson Technology Corporation Limited
7  */
8 #ifndef _UAPI_ASM_PTRACE_H
9 #define _UAPI_ASM_PTRACE_H
10 
11 #include <linux/types.h>
12 
13 #ifndef __KERNEL__
14 #include <stdint.h>
15 #endif
16 
17 /*
18  * For PTRACE_{POKE,PEEK}USR. 0 - 31 are GPRs,
19  * 32 is syscall's original ARG0, 33 is PC, 34 is BADVADDR.
20  */
21 #define GPR_BASE	0
22 #define GPR_NUM		32
23 #define GPR_END		(GPR_BASE + GPR_NUM - 1)
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_watch_state {
50 	uint16_t dbg_info;
51 	struct {
52 		uint64_t    addr;
53 		uint64_t    mask;
54 		uint32_t    ctrl;
55 	} dbg_regs[8];
56 };
57 
58 #define PTRACE_SYSEMU			0x1f
59 #define PTRACE_SYSEMU_SINGLESTEP	0x20
60 
61 #endif /* _UAPI_ASM_PTRACE_H */
62