Greg Kroah-Hartman
598cf27219
Link: https://lore.kernel.org/r/20260217200002.683975158@linuxfoundation.org Tested-by: Florian Fainelli <florian.fainelli@broadcom.com> Tested-by: Takeshi Ogasawara <takeshi.ogasawara@futuring-girl.com> Tested-by: Peter Schneider <pschneider1968@googlemail.com> Tested-by: Jon Hunter <jonathanh@nvidia.com> Tested-by: Salvatore Bonaccorso <carnil@debian.org> Tested-by: Brett A C Sheffield <bacs@librecast.net> Tested-by: Mark Brown <broonie@kernel.org> Tested-by: Luna Jernberg <droidbittin@gmail.com> Tested-by: Ronald Warsow <rwarsow@gmx.de> Tested-by: Justin M. Forbes <jforbes@fedoraproject.org> Tested-by: Ron Economos <re@w6rz.net> Tested-by: Miguel Ojeda <ojeda@kernel.org> Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
59 lines
1.3 KiB
C
59 lines
1.3 KiB
C
// SPDX-License-Identifier: GPL-2.0-or-later
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#include <linux/regset.h>
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#include <asm/switch_to.h>
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#include "ptrace-decl.h"
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int ptrace_get_fpr(struct task_struct *child, int index, unsigned long *data)
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{
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#ifdef CONFIG_PPC_FPU_REGS
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unsigned int fpidx = index - PT_FPR0;
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#endif
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if (index > PT_FPSCR)
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return -EIO;
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#ifdef CONFIG_PPC_FPU_REGS
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flush_fp_to_thread(child);
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if (fpidx < (PT_FPSCR - PT_FPR0)) {
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if (IS_ENABLED(CONFIG_PPC32))
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// On 32-bit the index we are passed refers to 32-bit words
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*data = ((u32 *)child->thread.fp_state.fpr)[fpidx];
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else
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memcpy(data, &child->thread.TS_FPR(fpidx), sizeof(long));
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} else
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*data = child->thread.fp_state.fpscr;
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#else
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*data = 0;
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#endif
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return 0;
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}
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int ptrace_put_fpr(struct task_struct *child, int index, unsigned long data)
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{
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#ifdef CONFIG_PPC_FPU_REGS
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unsigned int fpidx = index - PT_FPR0;
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#endif
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if (index > PT_FPSCR)
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return -EIO;
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#ifdef CONFIG_PPC_FPU_REGS
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flush_fp_to_thread(child);
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if (fpidx < (PT_FPSCR - PT_FPR0)) {
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if (IS_ENABLED(CONFIG_PPC32))
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// On 32-bit the index we are passed refers to 32-bit words
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((u32 *)child->thread.fp_state.fpr)[fpidx] = data;
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else
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memcpy(&child->thread.TS_FPR(fpidx), &data, sizeof(long));
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} else
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child->thread.fp_state.fpscr = data;
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#endif
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return 0;
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}
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