1 // SPDX-License-Identifier: GPL-2.0-or-later
2
3 #include <linux/regset.h>
4
5 #include <asm/switch_to.h>
6
7 #include "ptrace-decl.h"
8
ptrace_get_fpr(struct task_struct * child,int index,unsigned long * data)9 int ptrace_get_fpr(struct task_struct *child, int index, unsigned long *data)
10 {
11 #ifdef CONFIG_PPC_FPU_REGS
12 unsigned int fpidx = index - PT_FPR0;
13 #endif
14
15 if (index > PT_FPSCR)
16 return -EIO;
17
18 #ifdef CONFIG_PPC_FPU_REGS
19 flush_fp_to_thread(child);
20 if (fpidx < (PT_FPSCR - PT_FPR0))
21 memcpy(data, &child->thread.TS_FPR(fpidx), sizeof(long));
22 else
23 *data = child->thread.fp_state.fpscr;
24 #else
25 *data = 0;
26 #endif
27
28 return 0;
29 }
30
ptrace_put_fpr(struct task_struct * child,int index,unsigned long data)31 int ptrace_put_fpr(struct task_struct *child, int index, unsigned long data)
32 {
33 #ifdef CONFIG_PPC_FPU_REGS
34 unsigned int fpidx = index - PT_FPR0;
35 #endif
36
37 if (index > PT_FPSCR)
38 return -EIO;
39
40 #ifdef CONFIG_PPC_FPU_REGS
41 flush_fp_to_thread(child);
42 if (fpidx < (PT_FPSCR - PT_FPR0))
43 memcpy(&child->thread.TS_FPR(fpidx), &data, sizeof(long));
44 else
45 child->thread.fp_state.fpscr = data;
46 #endif
47
48 return 0;
49 }
50
51