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Fix MIPS n32 pr_sigpend, pr_sighold, pr_flag type (bug 23656).

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As discussed at
<https://sourceware.org/ml/libc-alpha/2018-09/msg00191.html> and
followup discussions, the MIPS n32 definitions of pr_sigpend and
pr_sighold in struct elf_prstatus, and pr_flag in struct elf_prpsinfo,
are wrong to use unsigned long long int; actual n32 core dumps use a
32-bit type there, so userspace unsigned long int is correct for all
MIPS ABIs.  This patch removes the conditionals (also thereby aligning
the structures with other architectures and so facilitating future
unification of different versions of this header).

Tested with build-many-glibcs.py for its MIPS configurations.

	[BZ #23656]
	* sysdeps/unix/sysv/linux/mips/sys/procfs.h (struct elf_prstatus):
	Remove [_MIPS_SIM = _ABIN32] conditional case.
	(struct elf_prpsinfo): Likewise.
This commit is contained in:
Joseph Myers 2018-09-14 16:02:57 +00:00
parent d59f3e5e0f
commit 3f7f1d180d
3 changed files with 11 additions and 9 deletions
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5
ChangeLog
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@ -1,5 +1,10 @@
2018-09-14 Joseph Myers <joseph@codesourcery.com>
[BZ #23656]
* sysdeps/unix/sysv/linux/mips/sys/procfs.h (struct elf_prstatus):
Remove [_MIPS_SIM = _ABIN32] conditional case.
(struct elf_prpsinfo): Likewise.
[BZ #23649]
* sysdeps/unix/sysv/linux/microblaze/sys/procfs.h (struct
elf_prpsinfo): Use unsigned int for pr_uid and pr_gid.

6
NEWS
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@ -31,6 +31,12 @@ Deprecated and removed features, and other changes affecting compatibility:
the Linux kernel. This affects the size and layout of that structure on
MicroBlaze, MIPS (n64 ABI only), Nios II and RISC-V.
* For the MIPS n32 ABI, the type of the pr_sigpend and pr_sighold members of
struct elf_prstatus, and the pr_flag member of struct elf_prpsinfo,
defined in <sys/procfs.h>, has been corrected to match the type actually
used by the Linux kernel. This affects the size and layout of those
structures.
Changes to build and runtime requirements:
[Add changes to build and runtime requirements here]

9
sysdeps/unix/sysv/linux/mips/sys/procfs.h
View File

@ -64,13 +64,8 @@ struct elf_prstatus
{
struct elf_siginfo pr_info; /* Info associated with signal. */
short int pr_cursig; /* Current signal. */
#if _MIPS_SIM == _ABIN32
__extension__ unsigned long long int pr_sigpend;
__extension__ unsigned long long int pr_sighold;
#else
unsigned long int pr_sigpend; /* Set of pending signals. */
unsigned long int pr_sighold; /* Set of held signals. */
#endif
__pid_t pr_pid;
__pid_t pr_ppid;
__pid_t pr_pgrp;
@ -92,11 +87,7 @@ struct elf_prpsinfo
char pr_sname; /* Char for pr_state. */
char pr_zomb; /* Zombie. */
char pr_nice; /* Nice val. */
#if _MIPS_SIM == _ABIN32
__extension__ unsigned long long int pr_flag;
#else
unsigned long int pr_flag; /* Flags. */
#endif
unsigned int pr_uid;
unsigned int pr_gid;
int pr_pid, pr_ppid, pr_pgrp, pr_sid;