vasilito
dc68054305
- Restore 29 recipe symlinks (libdrm, qtbase, dbus, sddm, pipewire, etc.) - Restore 33 patches (KDE, libdrm, mesa, pipewire, sddm, wireplumber) - Restore 20+ local/scripts (audit, lint, test, build helpers) - Restore src/cook/scheduler.rs, status.rs, gnu-config/ - Restore scripts/patch-inclusion-gate.sh, run_mini1.sh, validate-collision-log.sh - Recover TLC source from HEAD (was overwritten by 0.2.3 checkout) - Recover 11 local/docs plans from HEAD (were overwritten) - Recover qt6-wayland-smoke symlink from HEAD - Fix MOTD: remove garbled ASCII art, use clean text - Update version: 0.2.0 -> 0.2.4 in os-release, motd, config - Reduce filesystem_size: 1536 -> 512 MiB - Add ABSOLUTE RULE to AGENTS.md: never delete/ignore packages - Reduce pcid scheme log verbosity: info -> debug
50 lines
1.7 KiB
C
50 lines
1.7 KiB
C
/* SPDX-License-Identifier: GPL-2.0 */
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#ifndef _ASM_X86_SIGHANDLING_H
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#define _ASM_X86_SIGHANDLING_H
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#include <linux/compiler.h>
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#include <linux/ptrace.h>
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#include <linux/signal.h>
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#include <asm/processor-flags.h>
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#define FIX_EFLAGS (X86_EFLAGS_AC | X86_EFLAGS_OF | \
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X86_EFLAGS_DF | X86_EFLAGS_TF | X86_EFLAGS_SF | \
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X86_EFLAGS_ZF | X86_EFLAGS_AF | X86_EFLAGS_PF | \
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X86_EFLAGS_CF | X86_EFLAGS_RF)
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void signal_fault(struct pt_regs *regs, void __user *frame, char *where);
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void __user *
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get_sigframe(struct ksignal *ksig, struct pt_regs *regs, size_t frame_size,
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void __user **fpstate);
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int ia32_setup_frame(struct ksignal *ksig, struct pt_regs *regs);
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int ia32_setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs);
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int x64_setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs);
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int x32_setup_rt_frame(struct ksignal *ksig, struct pt_regs *regs);
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/*
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* To prevent immediate repeat of single step trap on return from SIGTRAP
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* handler if the trap flag (TF) is set without an external debugger attached,
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* clear the software event flag in the augmented SS, ensuring no single-step
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* trap is pending upon ERETU completion.
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*
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* Note, this function should be called in sigreturn() before the original
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* state is restored to make sure the TF is read from the entry frame.
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*/
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static __always_inline void prevent_single_step_upon_eretu(struct pt_regs *regs)
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{
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/*
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* If the trap flag (TF) is set, i.e., the sigreturn() SYSCALL instruction
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* is being single-stepped, do not clear the software event flag in the
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* augmented SS, thus a debugger won't skip over the following instruction.
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*/
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#ifdef CONFIG_X86_FRED
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if (!(regs->flags & X86_EFLAGS_TF))
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regs->fred_ss.swevent = 0;
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#endif
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}
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#endif /* _ASM_X86_SIGHANDLING_H */
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