Linux-2.6.12-rc2v2.6.12-rc2

Initial git repository build. I'm not bothering with the full history,
even though we have it. We can create a separate "historical" git
archive of that later if we want to, and in the meantime it's about
3.2GB when imported into git - space that would just make the early
git days unnecessarily complicated, when we don't have a lot of good
infrastructure for it.

Let it rip!

1 files changed, 210 insertions, 0 deletions

diff --git a/arch/s390/kernel/binfmt_elf32.c b/arch/s390/kernel/binfmt_elf32.c
new file mode 100644
index 00000000000..03ba5893f17
--- /dev/null
+++ b/arch/s390/kernel/binfmt_elf32.c
@@ -0,0 +1,210 @@
+/*
+ * Support for 32-bit Linux for S390 ELF binaries.
+ *
+ * Copyright (C) 2000 IBM Deutschland Entwicklung GmbH, IBM Corporation
+ * Author(s): Gerhard Tonn (ton@de.ibm.com)
+ *
+ * Heavily inspired by the 32-bit Sparc compat code which is
+ * Copyright (C) 1995, 1996, 1997, 1998 David S. Miller (davem@redhat.com)
+ * Copyright (C) 1995, 1996, 1997, 1998 Jakub Jelinek   (jj@ultra.linux.cz)
+ */
+
+#define __ASMS390_ELF_H
+
+#include <linux/time.h>
+
+/*
+ * These are used to set parameters in the core dumps.
+ */
+#define ELF_CLASS	ELFCLASS32
+#define ELF_DATA	ELFDATA2MSB
+#define ELF_ARCH	EM_S390
+
+/*
+ * This is used to ensure we don't load something for the wrong architecture.
+ */
+#define elf_check_arch(x) \
+	(((x)->e_machine == EM_S390 || (x)->e_machine == EM_S390_OLD) \
+         && (x)->e_ident[EI_CLASS] == ELF_CLASS)
+
+/* ELF register definitions */
+#define NUM_GPRS      16
+#define NUM_FPRS      16
+#define NUM_ACRS      16    
+
+/* For SVR4/S390 the function pointer to be registered with `atexit` is
+   passed in R14. */
+#define ELF_PLAT_INIT(_r, load_addr) \
+	do { \
+		_r->gprs[14] = 0; \
+	} while(0)
+
+#define USE_ELF_CORE_DUMP
+#define ELF_EXEC_PAGESIZE       4096
+
+/* This is the location that an ET_DYN program is loaded if exec'ed.  Typical
+   use of this is to invoke "./ld.so someprog" to test out a new version of
+   the loader.  We need to make sure that it is out of the way of the program
+   that it will "exec", and that there is sufficient room for the brk.  */
+
+#define ELF_ET_DYN_BASE         (TASK_SIZE / 3 * 2)
+
+/* Wow, the "main" arch needs arch dependent functions too.. :) */
+
+/* regs is struct pt_regs, pr_reg is elf_gregset_t (which is
+   now struct_user_regs, they are different) */
+
+#define ELF_CORE_COPY_REGS(pr_reg, regs) dump_regs32(regs, &pr_reg);
+
+#define ELF_CORE_COPY_TASK_REGS(tsk, regs) dump_task_regs32(tsk, regs)
+
+#define ELF_CORE_COPY_FPREGS(tsk, fpregs) dump_task_fpu(tsk, fpregs)
+
+/* This yields a mask that user programs can use to figure out what
+   instruction set this CPU supports. */
+
+#define ELF_HWCAP (0)
+
+/* 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.
+
+   For the moment, we have only optimizations for the Intel generations,
+   but that could change... */
+
+#define ELF_PLATFORM (NULL)
+
+#define SET_PERSONALITY(ex, ibcs2)			\
+do {							\
+	if (ibcs2)                                      \
+		set_personality(PER_SVR4);              \
+	else if (current->personality != PER_LINUX32)   \
+		set_personality(PER_LINUX);             \
+	set_thread_flag(TIF_31BIT);			\
+} while (0)
+
+#include "compat_linux.h"
+
+typedef _s390_fp_regs32 elf_fpregset_t;
+
+typedef struct
+{
+	
+	_psw_t32	psw;
+	__u32		gprs[__NUM_GPRS]; 
+	__u32		acrs[__NUM_ACRS]; 
+	__u32		orig_gpr2;
+} s390_regs32;
+typedef s390_regs32 elf_gregset_t;
+
+static inline int dump_regs32(struct pt_regs *ptregs, elf_gregset_t *regs)
+{
+	int i;
+
+	memcpy(&regs->psw.mask, &ptregs->psw.mask, 4);
+	memcpy(&regs->psw.addr, (char *)&ptregs->psw.addr + 4, 4);
+	for (i = 0; i < NUM_GPRS; i++)
+		regs->gprs[i] = ptregs->gprs[i];
+	save_access_regs(regs->acrs);
+	regs->orig_gpr2 = ptregs->orig_gpr2;
+	return 1;
+}
+
+static inline int dump_task_regs32(struct task_struct *tsk, elf_gregset_t *regs)
+{
+	struct pt_regs *ptregs = __KSTK_PTREGS(tsk);
+	int i;
+
+	memcpy(&regs->psw.mask, &ptregs->psw.mask, 4);
+	memcpy(&regs->psw.addr, (char *)&ptregs->psw.addr + 4, 4);
+	for (i = 0; i < NUM_GPRS; i++)
+		regs->gprs[i] = ptregs->gprs[i];
+	memcpy(regs->acrs, tsk->thread.acrs, sizeof(regs->acrs));
+	regs->orig_gpr2 = ptregs->orig_gpr2;
+	return 1;
+}
+
+static inline int dump_task_fpu(struct task_struct *tsk, elf_fpregset_t *fpregs)
+{
+	if (tsk == current)
+		save_fp_regs((s390_fp_regs *) fpregs);
+	else
+		memcpy(fpregs, &tsk->thread.fp_regs, sizeof(elf_fpregset_t));
+	return 1;
+}
+
+#include <asm/processor.h>
+#include <linux/module.h>
+#include <linux/config.h>
+#include <linux/elfcore.h>
+#include <linux/binfmts.h>
+#include <linux/compat.h>
+
+#define elf_prstatus elf_prstatus32
+struct elf_prstatus32
+{
+	struct elf_siginfo pr_info;	/* Info associated with signal */
+	short	pr_cursig;		/* Current signal */
+	u32	pr_sigpend;	/* Set of pending signals */
+	u32	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 */
+	u32	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 */
+};
+
+#include <linux/highuid.h>
+
+#undef NEW_TO_OLD_UID
+#undef NEW_TO_OLD_GID
+#define NEW_TO_OLD_UID(uid) ((uid) > 65535) ? (u16)overflowuid : (u16)(uid)
+#define NEW_TO_OLD_GID(gid) ((gid) > 65535) ? (u16)overflowgid : (u16)(gid) 
+
+#define elf_addr_t	u32
+/*
+#define init_elf_binfmt init_elf32_binfmt
+*/
+
+#undef start_thread
+#define start_thread                    start_thread31 
+
+MODULE_DESCRIPTION("Binary format loader for compatibility with 32bit Linux for S390 binaries,"
+                   " Copyright 2000 IBM Corporation"); 
+MODULE_AUTHOR("Gerhard Tonn <ton@de.ibm.com>");
+
+#undef MODULE_DESCRIPTION
+#undef MODULE_AUTHOR
+
+#undef cputime_to_timeval
+#define cputime_to_timeval cputime_to_compat_timeval
+static __inline__ void
+cputime_to_compat_timeval(const cputime_t cputime, struct compat_timeval *value)
+{
+	value->tv_usec = cputime % 1000000;
+	value->tv_sec = cputime / 1000000;
+}
+
+#include "../../../fs/binfmt_elf.c"
+