[PATCH v12 3/8] arch: move SA_* definitions to generic headers
Dave Martin
Dave.Martin at arm.com
Mon Nov 2 12:23:45 EST 2020
On Fri, Oct 16, 2020 at 05:12:28PM -0700, Peter Collingbourne wrote:
> Most architectures with the exception of alpha, mips, parisc and
> sparc use the same values for these flags. Move their definitions into
> asm-generic/signal-defs.h and allow the architectures with non-standard
> values to override them. Also, document the non-standard flag values
> in order to make it easier to add new generic flags in the future.
>
> A consequence of this change is that on powerpc and x86, the constants'
> values aside from SA_RESETHAND change signedness from unsigned
> to signed. This is not expected to impact realistic use of these
> constants. In particular the typical use of the constants where they
> are or'ed together and assigned to sa_flags (or another int variable)
> would not be affected.
>
> Signed-off-by: Peter Collingbourne <pcc at google.com>
> Acked-by: Geert Uytterhoeven <geert at linux-m68k.org>
I haven't checked exhaustively that all the constant values definitely
match up, or that every arch to which this change is applicable has
been patched, but where I have looked, it checks out.
But otherwise, this looks reasonable to me.
Reviewed-by: Dave Martin <Dave.Martin at arm.com>
> Link: https://linux-review.googlesource.com/id/Ia3849f18b8009bf41faca374e701cdca36974528
> ---
> v11:
> - tweak the commit message to point out the change from unsigned
> to signed
>
> v10:
> - move the comments around and add one for SA_SIGINFO
>
> arch/alpha/include/uapi/asm/signal.h | 14 --------
> arch/arm/include/uapi/asm/signal.h | 28 ++-------------
> arch/h8300/include/uapi/asm/signal.h | 24 -------------
> arch/ia64/include/uapi/asm/signal.h | 24 -------------
> arch/m68k/include/uapi/asm/signal.h | 24 -------------
> arch/mips/include/uapi/asm/signal.h | 12 -------
> arch/parisc/include/uapi/asm/signal.h | 13 -------
> arch/powerpc/include/uapi/asm/signal.h | 24 -------------
> arch/s390/include/uapi/asm/signal.h | 24 -------------
> arch/sparc/include/uapi/asm/signal.h | 4 +--
> arch/x86/include/uapi/asm/signal.h | 24 -------------
> arch/xtensa/include/uapi/asm/signal.h | 24 -------------
> include/uapi/asm-generic/signal-defs.h | 47 ++++++++++++++++++++++++++
> include/uapi/asm-generic/signal.h | 29 ----------------
> 14 files changed, 51 insertions(+), 264 deletions(-)
>
> diff --git a/arch/alpha/include/uapi/asm/signal.h b/arch/alpha/include/uapi/asm/signal.h
> index 74c750bf1c1a..a69dd8d080a8 100644
> --- a/arch/alpha/include/uapi/asm/signal.h
> +++ b/arch/alpha/include/uapi/asm/signal.h
> @@ -60,20 +60,6 @@ typedef unsigned long sigset_t;
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -
> #define SA_ONSTACK 0x00000001
> #define SA_RESTART 0x00000002
> #define SA_NOCLDSTOP 0x00000004
> diff --git a/arch/arm/include/uapi/asm/signal.h b/arch/arm/include/uapi/asm/signal.h
> index 9b4185ba4f8a..7727f0984d26 100644
> --- a/arch/arm/include/uapi/asm/signal.h
> +++ b/arch/arm/include/uapi/asm/signal.h
> @@ -60,33 +60,11 @@ typedef unsigned long sigset_t;
> #define SIGSWI 32
>
> /*
> - * SA_FLAGS values:
> - *
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_SIGINFO deliver the signal with SIGINFO structs
> - * SA_THIRTYTWO delivers the signal in 32-bit mode, even if the task
> - * is running in 26-bit.
> - * SA_ONSTACK allows alternate signal stacks (see sigaltstack(2)).
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> + * SA_THIRTYTWO historically meant deliver the signal in 32-bit mode, even if
> + * the task is running in 26-bit. But since the kernel no longer supports
> + * 26-bit mode, the flag has no effect.
> */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002
> -#define SA_SIGINFO 0x00000004
> #define SA_THIRTYTWO 0x02000000
> -#define SA_RESTORER 0x04000000
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
>
> #define MINSIGSTKSZ 2048
> #define SIGSTKSZ 8192
> diff --git a/arch/h8300/include/uapi/asm/signal.h b/arch/h8300/include/uapi/asm/signal.h
> index e15521037348..2cd0dce2b6a6 100644
> --- a/arch/h8300/include/uapi/asm/signal.h
> +++ b/arch/h8300/include/uapi/asm/signal.h
> @@ -57,30 +57,6 @@ typedef unsigned long sigset_t;
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002 /* not supported yet */
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000
>
> #define MINSIGSTKSZ 2048
> diff --git a/arch/ia64/include/uapi/asm/signal.h b/arch/ia64/include/uapi/asm/signal.h
> index aa98ff1b9e22..38166a88e4c9 100644
> --- a/arch/ia64/include/uapi/asm/signal.h
> +++ b/arch/ia64/include/uapi/asm/signal.h
> @@ -53,30 +53,6 @@
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000
>
> /*
> diff --git a/arch/m68k/include/uapi/asm/signal.h b/arch/m68k/include/uapi/asm/signal.h
> index 915cc755a184..4619291df601 100644
> --- a/arch/m68k/include/uapi/asm/signal.h
> +++ b/arch/m68k/include/uapi/asm/signal.h
> @@ -57,30 +57,6 @@ typedef unsigned long sigset_t;
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define MINSIGSTKSZ 2048
> #define SIGSTKSZ 8192
>
> diff --git a/arch/mips/include/uapi/asm/signal.h b/arch/mips/include/uapi/asm/signal.h
> index 53104b10aae2..e6c78a15cb2f 100644
> --- a/arch/mips/include/uapi/asm/signal.h
> +++ b/arch/mips/include/uapi/asm/signal.h
> @@ -62,18 +62,6 @@ typedef unsigned long old_sigset_t; /* at least 32 bits */
> #define SIGRTMAX _NSIG
>
> /*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - *
> * SA_RESTORER used to be defined as 0x04000000 but only the O32 ABI ever
> * supported its use and no libc was using it, so the entire sa-restorer
> * functionality was removed with lmo commit 39bffc12c3580ab for 2.5.48
> diff --git a/arch/parisc/include/uapi/asm/signal.h b/arch/parisc/include/uapi/asm/signal.h
> index 9e6f87bc8a73..e5a2657477ac 100644
> --- a/arch/parisc/include/uapi/asm/signal.h
> +++ b/arch/parisc/include/uapi/asm/signal.h
> @@ -41,19 +41,6 @@
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> #define SA_ONSTACK 0x00000001
> #define SA_RESETHAND 0x00000004
> #define SA_NOCLDSTOP 0x00000008
> diff --git a/arch/powerpc/include/uapi/asm/signal.h b/arch/powerpc/include/uapi/asm/signal.h
> index 85b0a7aa43e7..04873dd311c2 100644
> --- a/arch/powerpc/include/uapi/asm/signal.h
> +++ b/arch/powerpc/include/uapi/asm/signal.h
> @@ -60,30 +60,6 @@ typedef struct {
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK is not currently supported, but will allow sigaltstack(2).
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001U
> -#define SA_NOCLDWAIT 0x00000002U
> -#define SA_SIGINFO 0x00000004U
> -#define SA_ONSTACK 0x08000000U
> -#define SA_RESTART 0x10000000U
> -#define SA_NODEFER 0x40000000U
> -#define SA_RESETHAND 0x80000000U
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000U
>
> #define MINSIGSTKSZ 2048
> diff --git a/arch/s390/include/uapi/asm/signal.h b/arch/s390/include/uapi/asm/signal.h
> index 9a14a611ed82..0189f326aac5 100644
> --- a/arch/s390/include/uapi/asm/signal.h
> +++ b/arch/s390/include/uapi/asm/signal.h
> @@ -65,30 +65,6 @@ typedef unsigned long sigset_t;
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000
>
> #define MINSIGSTKSZ 2048
> diff --git a/arch/sparc/include/uapi/asm/signal.h b/arch/sparc/include/uapi/asm/signal.h
> index ff9505923b9a..53758d53ac0e 100644
> --- a/arch/sparc/include/uapi/asm/signal.h
> +++ b/arch/sparc/include/uapi/asm/signal.h
> @@ -137,13 +137,11 @@ struct sigstack {
> #define SA_STACK _SV_SSTACK
> #define SA_ONSTACK _SV_SSTACK
> #define SA_RESTART _SV_INTR
> -#define SA_ONESHOT _SV_RESET
> +#define SA_RESETHAND _SV_RESET
> #define SA_NODEFER 0x20u
> #define SA_NOCLDWAIT 0x100u
> #define SA_SIGINFO 0x200u
>
> -#define SA_NOMASK SA_NODEFER
> -
> #define SIG_BLOCK 0x01 /* for blocking signals */
> #define SIG_UNBLOCK 0x02 /* for unblocking signals */
> #define SIG_SETMASK 0x04 /* for setting the signal mask */
> diff --git a/arch/x86/include/uapi/asm/signal.h b/arch/x86/include/uapi/asm/signal.h
> index e5745d593dc7..164a22a72984 100644
> --- a/arch/x86/include/uapi/asm/signal.h
> +++ b/arch/x86/include/uapi/asm/signal.h
> @@ -62,30 +62,6 @@ typedef unsigned long sigset_t;
> #define SIGRTMIN 32
> #define SIGRTMAX _NSIG
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001u
> -#define SA_NOCLDWAIT 0x00000002u
> -#define SA_SIGINFO 0x00000004u
> -#define SA_ONSTACK 0x08000000u
> -#define SA_RESTART 0x10000000u
> -#define SA_NODEFER 0x40000000u
> -#define SA_RESETHAND 0x80000000u
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000
>
> #define MINSIGSTKSZ 2048
> diff --git a/arch/xtensa/include/uapi/asm/signal.h b/arch/xtensa/include/uapi/asm/signal.h
> index 005dec5bfde4..79ddabaa4e5d 100644
> --- a/arch/xtensa/include/uapi/asm/signal.h
> +++ b/arch/xtensa/include/uapi/asm/signal.h
> @@ -72,30 +72,6 @@ typedef struct {
> #define SIGRTMIN 32
> #define SIGRTMAX (_NSIG-1)
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002 /* not supported yet */
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> #define SA_RESTORER 0x04000000
>
> #define MINSIGSTKSZ 2048
> diff --git a/include/uapi/asm-generic/signal-defs.h b/include/uapi/asm-generic/signal-defs.h
> index e9304c95ceea..493953fe319b 100644
> --- a/include/uapi/asm-generic/signal-defs.h
> +++ b/include/uapi/asm-generic/signal-defs.h
> @@ -4,6 +4,53 @@
>
> #include <linux/compiler.h>
>
> +/*
> + * SA_FLAGS values:
> + *
> + * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> + * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> + * SA_SIGINFO delivers the signal with SIGINFO structs.
> + * SA_ONSTACK indicates that a registered stack_t will be used.
> + * SA_RESTART flag to get restarting signals (which were the default long ago)
> + * SA_NODEFER prevents the current signal from being masked in the handler.
> + * SA_RESETHAND clears the handler when the signal is delivered.
> + *
> + * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> + * Unix names RESETHAND and NODEFER respectively.
> + *
> + * The following bits are used in architecture-specific SA_* definitions and
> + * should be avoided for new generic flags: 3, 4, 5, 6, 7, 8, 9, 16, 24, 25, 26.
> + */
> +#ifndef SA_NOCLDSTOP
> +#define SA_NOCLDSTOP 0x00000001
> +#endif
> +#ifndef SA_NOCLDWAIT
> +#define SA_NOCLDWAIT 0x00000002
> +#endif
> +#ifndef SA_SIGINFO
> +#define SA_SIGINFO 0x00000004
> +#endif
> +#ifndef SA_ONSTACK
> +#define SA_ONSTACK 0x08000000
> +#endif
> +#ifndef SA_RESTART
> +#define SA_RESTART 0x10000000
> +#endif
> +#ifndef SA_NODEFER
> +#define SA_NODEFER 0x40000000
> +#endif
> +#ifndef SA_RESETHAND
> +#define SA_RESETHAND 0x80000000
> +#endif
> +
> +#define SA_NOMASK SA_NODEFER
> +#define SA_ONESHOT SA_RESETHAND
> +
> +/*
> + * New architectures should not define the obsolete
> + * SA_RESTORER 0x04000000
> + */
> +
> #ifndef SIG_BLOCK
> #define SIG_BLOCK 0 /* for blocking signals */
> #endif
> diff --git a/include/uapi/asm-generic/signal.h b/include/uapi/asm-generic/signal.h
> index 5c716a952cbe..f634822906e4 100644
> --- a/include/uapi/asm-generic/signal.h
> +++ b/include/uapi/asm-generic/signal.h
> @@ -52,35 +52,6 @@
> #define SIGRTMAX _NSIG
> #endif
>
> -/*
> - * SA_FLAGS values:
> - *
> - * SA_ONSTACK indicates that a registered stack_t will be used.
> - * SA_RESTART flag to get restarting signals (which were the default long ago)
> - * SA_NOCLDSTOP flag to turn off SIGCHLD when children stop.
> - * SA_RESETHAND clears the handler when the signal is delivered.
> - * SA_NOCLDWAIT flag on SIGCHLD to inhibit zombies.
> - * SA_NODEFER prevents the current signal from being masked in the handler.
> - *
> - * SA_ONESHOT and SA_NOMASK are the historical Linux names for the Single
> - * Unix names RESETHAND and NODEFER respectively.
> - */
> -#define SA_NOCLDSTOP 0x00000001
> -#define SA_NOCLDWAIT 0x00000002
> -#define SA_SIGINFO 0x00000004
> -#define SA_ONSTACK 0x08000000
> -#define SA_RESTART 0x10000000
> -#define SA_NODEFER 0x40000000
> -#define SA_RESETHAND 0x80000000
> -
> -#define SA_NOMASK SA_NODEFER
> -#define SA_ONESHOT SA_RESETHAND
> -
> -/*
> - * New architectures should not define the obsolete
> - * SA_RESTORER 0x04000000
> - */
> -
> #if !defined MINSIGSTKSZ || !defined SIGSTKSZ
> #define MINSIGSTKSZ 2048
> #define SIGSTKSZ 8192
> --
> 2.29.0.rc1.297.gfa9743e501-goog
>
>
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