root/sys/arch/hppa/include/exec.h
/*      $OpenBSD: exec.h,v 1.15 2022/02/21 12:22:21 jsg Exp $   */

/* 
 * Copyright (c) 1994, The University of Utah and
 * the Computer Systems Laboratory at the University of Utah (CSL).
 * All rights reserved.
 *
 * Permission to use, copy, modify and distribute this software is hereby
 * granted provided that (1) source code retains these copyright, permission,
 * and disclaimer notices, and (2) redistributions including binaries
 * reproduce the notices in supporting documentation, and (3) all advertising
 * materials mentioning features or use of this software display the following
 * acknowledgement: ``This product includes software developed by the
 * Computer Systems Laboratory at the University of Utah.''
 *
 * THE UNIVERSITY OF UTAH AND CSL ALLOW FREE USE OF THIS SOFTWARE IN ITS "AS
 * IS" CONDITION.  THE UNIVERSITY OF UTAH AND CSL DISCLAIM ANY LIABILITY OF
 * ANY KIND FOR ANY DAMAGES WHATSOEVER RESULTING FROM THE USE OF THIS SOFTWARE.
 *
 * CSL requests users of this software to return to csl-dist@cs.utah.edu any
 * improvements that they make and grant CSL redistribution rights.
 *
 *      Utah $Hdr: exec.h 1.3 94/12/16$
 */

#ifndef _MACHINE_EXEC_H_
#define _MACHINE_EXEC_H_

/* Size of a page in an object file. */
#define __LDPGSZ        4096

#define ARCH_ELFSIZE            32

#define ELF_TARG_CLASS          ELFCLASS32
#define ELF_TARG_DATA           ELFDATA2MSB
#define ELF_TARG_MACH           EM_PARISC   

/*
 * the following MD ELF values definitions are from the:
 * "Processor-Specific ELF Supplement for PA-RISC.
 *  Including HP and HP-UX Extensions. Version 1.43. October 6, 1997"
 *      http://devrsrc1.external.hp.com/STK/partner/elf-pa.pdf
 *
 */

/* parisc-specific elf flags */
#define EF_PARISC_TRAPNIL       0x00010000      /* trap on NULL derefs */
#define EF_PARISC_EXT           0x00020000      /* program uses arch exts */
#define EF_PARISC_LSB           0x00040000      /* program expects LSB mode */
#define EF_PARISC_WIDE          0x00080000      /* program expects wide mode */
#define EF_PARISC_NO_KABP       0x00100000      /* don't allow kernel assisted
                                                   branch prediction */
#define EF_PARISC_LAZYSWAP      0x00200000      /* allow lazy swap allocation
                                                   for dynamically allocated
                                                   program segments */
#define EF_PARISC_ARCH          0x0000ffff      /* architecture version */
#define         EFA_PARISC_1_0  0x020B
#define         EFA_PARISC_1_1  0x0210
#define         EFA_PARISC_2_0  0x0214

/* legend: 0 - pa7000, 1 - pa7100, 2 - pa7200, 3 - pa7100LC, 4 - pa8000 */
#define PARISC_AE_QWSI  0x00000001      /* 0  : enable quadword stores */
#define PARISC_AE_FPLSU 0x00000002      /*   1: fp load/store to I/O space */
#define PARISC_AE_RSQRT 0x00000004      /* 0  : reciprocal sqrt */
#define PARISC_AE_FDCG  0x00000008      /* 0,1: fdc includes graph flushes */
#define PARISC_AE_HPAR  0x00000010      /* 3,4: half-word add/sub/av */
#define PARISC_AE_BSW   0x00000020      /* 3,4: half-word shift-add */
#define PARISC_AE_HPSA  0x00000040      /* 3  : byte-swapping stores */
#define PARISC_AE_DPR0  0x00000080      /* 2,4: data prefetch via ld to r0 */

#define SHN_PARISC_ANSI_COMMON  0xff00
#define SHN_PARISC_HUGE_COMMON  0xff01

/* sh_type */
#define SHT_PARISC_EXT          0x70000000      /* contains product-specific
                                                   extension bits */
#define SHT_PARISC_UNWIND       0x70000001      /* contains unwind table entries
                                                   sh_info contains index of
                                                   the code section to which
                                                   unwind entries apply */
#define SHT_PARISC_DOC          0x70000002      /* contains debug info for -O */
#define SHT_PARISC_ANNOT        0x70000003      /* contains code annotations */

/* sh_flags */
#define SHF_PARISC_SBP  0x80000000      /* contains code compiled for
                                           static branch prediction */
#define SHF_PARISC_HUGE 0x40000000      /* should be allocated far from gp */
#define SHF_PARISC_SHORT 0x20000000     /* should be allocated near from gp */

#define ELF_PARISC_ARCHEXT      ".PARISC.archext"
#define ELF_PARISC_MILLI        ".PARISC.milli"
#define ELF_PARISC_UNWIND       ".PARISC.unwind"
#define ELF_PARISC_UNWIND_INFO  ".PARISC.unwind_info"
#define ELF_PARISC_SDATA        ".sdata"
#define ELF_PARISC_NOBITS       ".sbss"

#define STT_PARISC_MILLI        13      /* entry point of a millicode routine */

#define PT_PARISC_ARCHEXT       0x70000000      /* segment contains
                                                   .PARISC.archext section */
#define PT_PARISC_UNWIND        0x70000001      /* segment contains
                                                   .unwind section */

#define PF_PARISC_SBP           0x08000000      /* segment contains code
                                        compiled for static branch prediction */

#endif  /* _MACHINE_EXEC_H_ */