parisc: Switch to generic COMPAT_BINFMT_ELF

Drop our own compat binfmt implementation in
arch/parisc/kernel/binfmt_elf32.c in favour of the generic
implementation with CONFIG_COMPAT_BINFMT_ELF.

While cleaning up the dependencies, I noticed that ELF_PLATFORM was strangely
defined: On a 32-bit kernel, it was defined to "PARISC", while when running in
compat mode on a 64-bit kernel it was defined to "PARISC32". Since it doesn't
seem to be used in glibc yet, it's now defined in both cases to "PARISC". In
any case, it can be distinguished because it's either a 32-bit or a 64-bit ELF
file.

Signed-off-by: Helge Deller <deller@gmx.de>

1 files changed, 0 insertions, 98 deletions

diff --git a/arch/parisc/kernel/binfmt_elf32.c b/arch/parisc/kernel/binfmt_elf32.c
deleted file mode 100644
index 20dfa081ed0b..000000000000
--- a/arch/parisc/kernel/binfmt_elf32.c
+++ /dev/null
@@ -1,98 +0,0 @@
-// SPDX-License-Identifier: GPL-2.0
-/*
- * Support for 32-bit Linux/Parisc ELF binaries on 64 bit kernels
- *
- * Copyright (C) 2000 John Marvin
- * Copyright (C) 2000 Hewlett Packard Co.
- *
- * Heavily inspired from various other efforts to do the same thing
- * (ia64,sparc64/mips64)
- */
-
-/* Make sure include/asm-parisc/elf.h does the right thing */
-
-#define ELF_CLASS	ELFCLASS32
-
-#define ELF_CORE_COPY_REGS(dst, pt)	\
-	memset(dst, 0, sizeof(dst));	/* don't leak any "random" bits */ \
-	{	int i; \
-		for (i = 0; i < 32; i++) dst[i] = (elf_greg_t) pt->gr[i]; \
-		for (i = 0; i < 8; i++) dst[32 + i] = (elf_greg_t) pt->sr[i]; \
-	} \
-	dst[40] = (elf_greg_t) pt->iaoq[0]; dst[41] = (elf_greg_t) pt->iaoq[1]; \
-	dst[42] = (elf_greg_t) pt->iasq[0]; dst[43] = (elf_greg_t) pt->iasq[1]; \
-	dst[44] = (elf_greg_t) pt->sar;   dst[45] = (elf_greg_t) pt->iir; \
-	dst[46] = (elf_greg_t) pt->isr;   dst[47] = (elf_greg_t) pt->ior; \
-	dst[48] = (elf_greg_t) mfctl(22); dst[49] = (elf_greg_t) mfctl(0); \
-	dst[50] = (elf_greg_t) mfctl(24); dst[51] = (elf_greg_t) mfctl(25); \
-	dst[52] = (elf_greg_t) mfctl(26); dst[53] = (elf_greg_t) mfctl(27); \
-	dst[54] = (elf_greg_t) mfctl(28); dst[55] = (elf_greg_t) mfctl(29); \
-	dst[56] = (elf_greg_t) mfctl(30); dst[57] = (elf_greg_t) mfctl(31); \
-	dst[58] = (elf_greg_t) mfctl( 8); dst[59] = (elf_greg_t) mfctl( 9); \
-	dst[60] = (elf_greg_t) mfctl(12); dst[61] = (elf_greg_t) mfctl(13); \
-	dst[62] = (elf_greg_t) mfctl(10); dst[63] = (elf_greg_t) mfctl(15);
-
-
-typedef unsigned int elf_greg_t;
-
-#include <linux/spinlock.h>
-#include <asm/processor.h>
-#include <linux/module.h>
-#include <linux/elfcore.h>
-#include <linux/compat.h>		/* struct compat_timeval */
-
-#define elf_prstatus elf_prstatus32
-struct elf_prstatus32
-{
-	struct elf_siginfo pr_info;	/* Info associated with signal */
-	short	pr_cursig;		/* Current signal */
-	unsigned int pr_sigpend;	/* Set of pending signals */
-	unsigned int pr_sighold;	/* Set of held signals */
-	pid_t	pr_pid;
-	pid_t	pr_ppid;
-	pid_t	pr_pgrp;
-	pid_t	pr_sid;
-	struct compat_timeval pr_utime;		/* User time */
-	struct compat_timeval pr_stime;		/* System time */
-	struct compat_timeval pr_cutime;	/* Cumulative user time */
-	struct compat_timeval pr_cstime;	/* Cumulative system time */
-	elf_gregset_t pr_reg;	/* GP registers */
-	int pr_fpvalid;		/* True if math co-processor being used.  */
-};
-
-#define elf_prpsinfo elf_prpsinfo32
-struct elf_prpsinfo32
-{
-	char	pr_state;	/* numeric process state */
-	char	pr_sname;	/* char for pr_state */
-	char	pr_zomb;	/* zombie */
-	char	pr_nice;	/* nice val */
-	unsigned int pr_flag;	/* flags */
-	u16	pr_uid;
-	u16	pr_gid;
-	pid_t	pr_pid, pr_ppid, pr_pgrp, pr_sid;
-	/* Lots missing */
-	char	pr_fname[16];	/* filename of executable */
-	char	pr_psargs[ELF_PRARGSZ];	/* initial part of arg list */
-};
-
-#define init_elf_binfmt init_elf32_binfmt
-
-#define ELF_PLATFORM  ("PARISC32\0")
-
-/*
- * We should probably use this macro to set a flag somewhere to indicate
- * this is a 32 on 64 process. We could use PER_LINUX_32BIT, or we
- * could set a processor dependent flag in the thread_struct.
- */
-
-#undef SET_PERSONALITY
-#define SET_PERSONALITY(ex) \
-	set_thread_flag(TIF_32BIT); \
-	current->thread.map_base = DEFAULT_MAP_BASE32; \
-	current->thread.task_size = DEFAULT_TASK_SIZE32 \
-
-#undef ns_to_timeval
-#define ns_to_timeval ns_to_compat_timeval
-
-#include "../../../fs/binfmt_elf.c"