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// SPDX-License-Identifier: GPL-2.0-or-later
#include <linux/regset.h>
#include <asm/switch_to.h>
#include "ptrace-decl.h"
int ptrace_get_fpr(struct task_struct *child, int index, unsigned long *data)
{
#ifdef CONFIG_PPC_FPU_REGS
unsigned int fpidx = index - PT_FPR0;
#endif
if (index > PT_FPSCR)
return -EIO;
#ifdef CONFIG_PPC_FPU_REGS
flush_fp_to_thread(child);
if (fpidx < (PT_FPSCR - PT_FPR0)) {
if (IS_ENABLED(CONFIG_PPC32))
// On 32-bit the index we are passed refers to 32-bit words
*data = ((u32 *)child->thread.fp_state.fpr)[fpidx];
else
memcpy(data, &child->thread.TS_FPR(fpidx), sizeof(long));
} else
*data = child->thread.fp_state.fpscr;
#else
*data = 0;
#endif
return 0;
}
int ptrace_put_fpr(struct task_struct *child, int index, unsigned long data)
{
#ifdef CONFIG_PPC_FPU_REGS
unsigned int fpidx = index - PT_FPR0;
#endif
if (index > PT_FPSCR)
return -EIO;
#ifdef CONFIG_PPC_FPU_REGS
flush_fp_to_thread(child);
if (fpidx < (PT_FPSCR - PT_FPR0)) {
if (IS_ENABLED(CONFIG_PPC32))
// On 32-bit the index we are passed refers to 32-bit words
((u32 *)child->thread.fp_state.fpr)[fpidx] = data;
else
memcpy(&child->thread.TS_FPR(fpidx), &data, sizeof(long));
} else
child->thread.fp_state.fpscr = data;
#endif
return 0;
}
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