Initial import

1 files changed, 104 insertions, 0 deletions

diff --git a/arch/parisc/kernel/binfmt_elf32.c b/arch/parisc/kernel/binfmt_elf32.c
new file mode 100644
index 000000000..00dc66f9c
--- /dev/null
+++ b/arch/parisc/kernel/binfmt_elf32.c
@@ -0,0 +1,104 @@
+/*
+ * 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 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)
+{
+	unsigned long jiffies = cputime_to_jiffies(cputime);
+	value->tv_usec = (jiffies % HZ) * (1000000L / HZ);
+	value->tv_sec = jiffies / HZ;
+}
+
+#include "../../../fs/binfmt_elf.c"