summaryrefslogtreecommitdiff
path: root/arch/alpha/include/asm/a.out.h
diff options
context:
space:
mode:
Diffstat (limited to 'arch/alpha/include/asm/a.out.h')
-rw-r--r--arch/alpha/include/asm/a.out.h102
1 files changed, 102 insertions, 0 deletions
diff --git a/arch/alpha/include/asm/a.out.h b/arch/alpha/include/asm/a.out.h
new file mode 100644
index 000000000000..02ce8473870a
--- /dev/null
+++ b/arch/alpha/include/asm/a.out.h
@@ -0,0 +1,102 @@
+#ifndef __ALPHA_A_OUT_H__
+#define __ALPHA_A_OUT_H__
+
+#include <linux/types.h>
+
+/*
+ * OSF/1 ECOFF header structs. ECOFF files consist of:
+ * - a file header (struct filehdr),
+ * - an a.out header (struct aouthdr),
+ * - one or more section headers (struct scnhdr).
+ * The filhdr's "f_nscns" field contains the
+ * number of section headers.
+ */
+
+struct filehdr
+{
+ /* OSF/1 "file" header */
+ __u16 f_magic, f_nscns;
+ __u32 f_timdat;
+ __u64 f_symptr;
+ __u32 f_nsyms;
+ __u16 f_opthdr, f_flags;
+};
+
+struct aouthdr
+{
+ __u64 info; /* after that it looks quite normal.. */
+ __u64 tsize;
+ __u64 dsize;
+ __u64 bsize;
+ __u64 entry;
+ __u64 text_start; /* with a few additions that actually make sense */
+ __u64 data_start;
+ __u64 bss_start;
+ __u32 gprmask, fprmask; /* bitmask of general & floating point regs used in binary */
+ __u64 gpvalue;
+};
+
+struct scnhdr
+{
+ char s_name[8];
+ __u64 s_paddr;
+ __u64 s_vaddr;
+ __u64 s_size;
+ __u64 s_scnptr;
+ __u64 s_relptr;
+ __u64 s_lnnoptr;
+ __u16 s_nreloc;
+ __u16 s_nlnno;
+ __u32 s_flags;
+};
+
+struct exec
+{
+ /* OSF/1 "file" header */
+ struct filehdr fh;
+ struct aouthdr ah;
+};
+
+/*
+ * Define's so that the kernel exec code can access the a.out header
+ * fields...
+ */
+#define a_info ah.info
+#define a_text ah.tsize
+#define a_data ah.dsize
+#define a_bss ah.bsize
+#define a_entry ah.entry
+#define a_textstart ah.text_start
+#define a_datastart ah.data_start
+#define a_bssstart ah.bss_start
+#define a_gprmask ah.gprmask
+#define a_fprmask ah.fprmask
+#define a_gpvalue ah.gpvalue
+
+#define N_TXTADDR(x) ((x).a_textstart)
+#define N_DATADDR(x) ((x).a_datastart)
+#define N_BSSADDR(x) ((x).a_bssstart)
+#define N_DRSIZE(x) 0
+#define N_TRSIZE(x) 0
+#define N_SYMSIZE(x) 0
+
+#define AOUTHSZ sizeof(struct aouthdr)
+#define SCNHSZ sizeof(struct scnhdr)
+#define SCNROUND 16
+
+#define N_TXTOFF(x) \
+ ((long) N_MAGIC(x) == ZMAGIC ? 0 : \
+ (sizeof(struct exec) + (x).fh.f_nscns*SCNHSZ + SCNROUND - 1) & ~(SCNROUND - 1))
+
+#ifdef __KERNEL__
+
+/* Assume that start addresses below 4G belong to a TASO application.
+ Unfortunately, there is no proper bit in the exec header to check.
+ Worse, we have to notice the start address before swapping to use
+ /sbin/loader, which of course is _not_ a TASO application. */
+#define SET_AOUT_PERSONALITY(BFPM, EX) \
+ set_personality (((BFPM->sh_bang || EX.ah.entry < 0x100000000L \
+ ? ADDR_LIMIT_32BIT : 0) | PER_OSF4))
+
+#endif /* __KERNEL__ */
+#endif /* __A_OUT_GNU_H__ */