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Merge branch 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux

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Pull parisc updates from Helge Deller:

 - fix panic when halting system via "shutdown -h now"

 - drop own coding in favour of generic CONFIG_COMPAT_BINFMT_ELF
   implementation

 - add FPE_CONDTRAP constant: last outstanding parisc-specific cleanup
   for Eric Biedermans siginfo patches

 - move some functions to .init and some to .text.hot linker sections

* 'parisc-4.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
  parisc: Prevent panic at system halt
  parisc: Switch to generic COMPAT_BINFMT_ELF
  parisc: Move cache flush functions into .text.hot section
  parisc/signal: Add FPE_CONDTRAP for conditional trap handling
This commit is contained in:
Linus Torvalds
2018-04-12 17:07:04 -07:00
parent 80aa76bcd3 6769828703
commit 681857ef0d
11 changed files with 60 additions and 157 deletions
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6
arch/parisc/include/asm/compat.h
View File

@@ -192,6 +192,12 @@ struct compat_shmid64_ds {
compat_ulong_t __unused6;
};
/*
* The type of struct elf_prstatus.pr_reg in compatible core dumps.
*/
#define COMPAT_ELF_NGREG 80
typedef compat_ulong_t compat_elf_gregset_t[COMPAT_ELF_NGREG];
/*
* A pointer passed in from user mode. This should not
* be used for syscall parameters, just declare them

69
arch/parisc/include/asm/elf.h
View File

@@ -6,7 +6,7 @@
* ELF register definitions..
*/
#include <asm/ptrace.h>
#include <linux/types.h>
#define EM_PARISC 15
@@ -169,16 +169,12 @@ typedef struct elf64_fdesc {
__u64 gp;
} Elf64_Fdesc;
#ifdef __KERNEL__
#ifdef CONFIG_64BIT
#define Elf_Fdesc Elf64_Fdesc
#else
#define Elf_Fdesc Elf32_Fdesc
#endif /*CONFIG_64BIT*/
#endif /*__KERNEL__*/
/* Legal values for p_type field of Elf32_Phdr/Elf64_Phdr. */
#define PT_HP_TLS (PT_LOOS + 0x0)
@@ -212,45 +208,45 @@ typedef struct elf64_fdesc {
#define PF_HP_LAZYSWAP 0x04000000
#define PF_HP_SBP 0x08000000
/*
* This yields a string that ld.so will use to load implementation
* specific libraries for optimization. This is more specific in
* intent than poking at uname or /proc/cpuinfo.
*/
#define ELF_PLATFORM ("PARISC")
/*
* The following definitions are those for 32-bit ELF binaries on a 32-bit
* kernel and for 64-bit binaries on a 64-bit kernel. To run 32-bit binaries
* on a 64-bit kernel, arch/parisc/kernel/binfmt_elf32.c defines these
* macros appropriately and then #includes binfmt_elf.c, which then includes
* this file.
* on a 64-bit kernel, fs/compat_binfmt_elf.c defines ELF_CLASS and then
* #includes binfmt_elf.c, which then includes this file.
*/
#ifndef ELF_CLASS
/*
* This is used to ensure we don't load something for the wrong architecture.
*
* Note that this header file is used by default in fs/binfmt_elf.c. So
* the following macros are for the default case. However, for the 64
* bit kernel we also support 32 bit parisc binaries. To do that
* arch/parisc/kernel/binfmt_elf32.c defines its own set of these
* macros, and then it includes fs/binfmt_elf.c to provide an alternate
* elf binary handler for 32 bit binaries (on the 64 bit kernel).
*/
#ifdef CONFIG_64BIT
#define ELF_CLASS ELFCLASS64
#define ELF_CLASS ELFCLASS64
#else
#define ELF_CLASS ELFCLASS32
#endif
typedef unsigned long elf_greg_t;
/*
* This yields a string that ld.so will use to load implementation
* specific libraries for optimization. This is more specific in
* intent than poking at uname or /proc/cpuinfo.
*/
#define ELF_PLATFORM ("PARISC\0")
#define SET_PERSONALITY(ex) \
({ \
set_personality((current->personality & ~PER_MASK) | PER_LINUX); \
current->thread.map_base = DEFAULT_MAP_BASE; \
current->thread.task_size = DEFAULT_TASK_SIZE \
current->thread.task_size = DEFAULT_TASK_SIZE; \
})
#endif /* ! ELF_CLASS */
#define COMPAT_SET_PERSONALITY(ex) \
({ \
set_thread_flag(TIF_32BIT); \
current->thread.map_base = DEFAULT_MAP_BASE32; \
current->thread.task_size = DEFAULT_TASK_SIZE32; \
})
/*
* Fill in general registers in a core dump. This saves pretty
@@ -277,10 +273,12 @@ typedef unsigned long elf_greg_t;
#define ELF_CORE_COPY_REGS(dst, pt) \
memset(dst, 0, sizeof(dst)); /* don't leak any "random" bits */ \
memcpy(dst + 0, pt->gr, 32 * sizeof(elf_greg_t)); \
memcpy(dst + 32, pt->sr, 8 * sizeof(elf_greg_t)); \
memcpy(dst + 40, pt->iaoq, 2 * sizeof(elf_greg_t)); \
memcpy(dst + 42, pt->iasq, 2 * sizeof(elf_greg_t)); \
{ int i; \
for (i = 0; i < 32; i++) dst[i] = pt->gr[i]; \
for (i = 0; i < 8; i++) dst[32 + i] = pt->sr[i]; \
} \
dst[40] = pt->iaoq[0]; dst[41] = pt->iaoq[1]; \
dst[42] = pt->iasq[0]; dst[43] = pt->iasq[1]; \
dst[44] = pt->sar; dst[45] = pt->iir; \
dst[46] = pt->isr; dst[47] = pt->ior; \
dst[48] = mfctl(22); dst[49] = mfctl(0); \
@@ -292,7 +290,7 @@ typedef unsigned long elf_greg_t;
dst[60] = mfctl(12); dst[61] = mfctl(13); \
dst[62] = mfctl(10); dst[63] = mfctl(15);
#endif /* ! ELF_CLASS */
#define CORE_DUMP_USE_REGSET
#define ELF_NGREG 80 /* We only need 64 at present, but leave space
for expansion. */
@@ -310,7 +308,10 @@ extern int dump_task_fpu (struct task_struct *, elf_fpregset_t *);
struct pt_regs; /* forward declaration... */
#define elf_check_arch(x) ((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELF_CLASS)
#define elf_check_arch(x) \
((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELF_CLASS)
#define compat_elf_check_arch(x) \
((x)->e_machine == EM_PARISC && (x)->e_ident[EI_CLASS] == ELFCLASS32)
/*
* These are used to set parameters in the core dumps.