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2023-12-09 b22da3d8526a935aa31e086e63f60ff3246cb61c

 kernel/arch/arm/include/uapi/asm/signal.h
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@@ -60,33 +60,12 @@
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 #define SIGSWI		32
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 /*
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- * SA_FLAGS values:
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- *
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- * SA_NOCLDSTOP		flag to turn off SIGCHLD when children stop.
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- * SA_NOCLDWAIT		flag on SIGCHLD to inhibit zombies.
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- * SA_SIGINFO		deliver the signal with SIGINFO structs
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- * SA_THIRTYTWO		delivers the signal in 32-bit mode, even if the task 
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- *			is running in 26-bit.
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- * SA_ONSTACK		allows alternate signal stacks (see sigaltstack(2)).
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- * SA_RESTART		flag to get restarting signals (which were the default long ago)
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- * SA_NODEFER		prevents the current signal from being masked in the handler.
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- * SA_RESETHAND		clears the handler when the signal is delivered.
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- *
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- * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
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- * Unix names RESETHAND and NODEFER respectively.
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+ * SA_THIRTYTWO historically meant deliver the signal in 32-bit mode, even if
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+ * the task is running in 26-bit. But since the kernel no longer supports
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+ * 26-bit mode, the flag has no effect.
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  */
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-#define SA_NOCLDSTOP	0x00000001
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-#define SA_NOCLDWAIT	0x00000002
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-#define SA_SIGINFO	0x00000004
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 #define SA_THIRTYTWO	0x02000000
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 #define SA_RESTORER	0x04000000
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-#define SA_ONSTACK	0x08000000
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-#define SA_RESTART	0x10000000
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-#define SA_NODEFER	0x40000000
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-#define SA_RESETHAND	0x80000000
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-
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-#define SA_NOMASK	SA_NODEFER
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-#define SA_ONESHOT	SA_RESETHAND
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 #define MINSIGSTKSZ	2048
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 #define SIGSTKSZ	8192