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Add NT_VMCOREDD, AT_MINSIGSTKSZ from Linux 4.18 to elf.h

Message ID alpine.DEB.2.20.1808151651550.29904@digraph.polyomino.org.uk
State New
Headers show

Commit Message

Joseph Myers Aug. 15, 2018, 4:52 p.m. UTC
This patch adds two new constants from Linux 4.18 to elf.h,
NT_VMCOREDD and AT_MINSIGSTKSZ.

Tested for x86_64.

2018-08-15  Joseph Myers  <joseph@codesourcery.com>

	* elf/elf.c (NT_VMCOREDD): New macro.
	(AT_MINSIGSTKSZ): Likewise.

Comments

Joseph Myers Aug. 20, 2018, 11:27 a.m. UTC | #1
Ping.  This patch 
<https://sourceware.org/ml/libc-alpha/2018-08/msg00315.html> is pending 
review.
Florian Weimer Aug. 20, 2018, 11:39 a.m. UTC | #2
On 08/15/2018 06:52 PM, Joseph Myers wrote:
> 2018-08-15  Joseph Myers<joseph@codesourcery.com>
> 
> 	* elf/elf.c (NT_VMCOREDD): New macro.
> 	(AT_MINSIGSTKSZ): Likewise.

I verified that the constants match the kernel settings.  Looks good to me.

As an aside: AT_MINSIGSTKSZ should really be arch-independent because 
x86 needs it as well (the signal stack usage varies wildly there as well).

Thanks,
Florian
Adhemerval Zanella Aug. 20, 2018, 11:44 a.m. UTC | #3
On 15/08/2018 13:52, Joseph Myers wrote:
> This patch adds two new constants from Linux 4.18 to elf.h,
> NT_VMCOREDD and AT_MINSIGSTKSZ.
> 
> Tested for x86_64.
> 
> 2018-08-15  Joseph Myers  <joseph@codesourcery.com>
> 
> 	* elf/elf.c (NT_VMCOREDD): New macro.
> 	(AT_MINSIGSTKSZ): Likewise.

LGTM thanks.

> 
> diff --git a/elf/elf.h b/elf/elf.h
> index 7e2b072..226e538 100644
> --- a/elf/elf.h
> +++ b/elf/elf.h
> @@ -808,6 +808,7 @@ typedef struct
>  #define NT_ARM_SYSTEM_CALL	0x404	/* ARM system call number */
>  #define NT_ARM_SVE	0x405		/* ARM Scalable Vector Extension
>  					   registers */
> +#define NT_VMCOREDD	0x700		/* Vmcore Device Dump Note.  */
>  
>  /* Legal values for the note segment descriptor types for object files.  */
>  
> @@ -1214,6 +1215,9 @@ typedef struct
>  #define AT_L3_CACHESIZE		46
>  #define AT_L3_CACHEGEOMETRY	47
>  
> +#define AT_MINSIGSTKSZ		51 /* Stack needed for signal delivery
> +				      (AArch64).  */
> +
>  /* Note section contents.  Each entry in the note section begins with
>     a header of a fixed form.  */
>  
>
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Patch

diff --git a/elf/elf.h b/elf/elf.h
index 7e2b072..226e538 100644
--- a/elf/elf.h
+++ b/elf/elf.h
@@ -808,6 +808,7 @@  typedef struct
 #define NT_ARM_SYSTEM_CALL	0x404	/* ARM system call number */
 #define NT_ARM_SVE	0x405		/* ARM Scalable Vector Extension
 					   registers */
+#define NT_VMCOREDD	0x700		/* Vmcore Device Dump Note.  */
 
 /* Legal values for the note segment descriptor types for object files.  */
 
@@ -1214,6 +1215,9 @@  typedef struct
 #define AT_L3_CACHESIZE		46
 #define AT_L3_CACHEGEOMETRY	47
 
+#define AT_MINSIGSTKSZ		51 /* Stack needed for signal delivery
+				      (AArch64).  */
+
 /* Note section contents.  Each entry in the note section begins with
    a header of a fixed form.  */