hppa.h

这个是LINUX下的GDB调度工具的源码

/* HPPA ELF support for BFD.
   Copyright 1993, 1994, 1995, 1998, 1999, 2000
   Free Software Foundation, Inc.

This file is part of BFD, the Binary File Descriptor library.

This program is free software; you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation; either version 2 of the License, or
(at your option) any later version.

This program is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
GNU General Public License for more details.

You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.  */

/* This file holds definitions specific to the HPPA ELF ABI.  Note
   that most of this is not actually implemented by BFD.  */

#ifndef _ELF_HPPA_H
#define _ELF_HPPA_H

/* Processor specific flags for the ELF header e_flags field.  */

/* Trap null address dereferences.  */
#define EF_PARISC_TRAPNIL	0x00010000

/* .PARISC.archext section is present.  */
#define EF_PARISC_EXT		0x00020000

/* Program expects little-endian mode.  */
#define EF_PARISC_LSB		0x00040000

/* Program expects wide mode.  */
#define EF_PARISC_WIDE		0x00080000

/* Do not allow kernel-assisted branch prediction.  */
#define EF_PARISC_NO_KABP	0x00100000

/* Allow lazy swap for dynamically allocated program segments.  */
#define EF_PARISC_LAZYSWAP	0x00400000

/* Architecture version */
#define EF_PARISC_ARCH		0x0000ffff

#define EFA_PARISC_1_0			0x020b
#define EFA_PARISC_1_1			0x0210
#define EFA_PARISC_2_0			0x0214

/* Special section indices.  */
/* A symbol that has been declared as a tentative definition in an ANSI C
   compilation.  */
#define SHN_PARISC_ANSI_COMMON 	0xff00

/* A symbol that has been declared as a common block using the
   huge memory model.  */
#define SHN_PARISC_HUGE_COMMON	0xff01

/* Processor specific section types.  */

/* Section contains product specific extension bits.  */
#define SHT_PARISC_EXT		0x70000000

/* Section contains unwind table entries.  */
#define SHT_PARISC_UNWIND	0x70000001

/* Section contains debug information for optimized code.  */
#define SHT_PARISC_DOC		0x70000002

/* Section contains code annotations.  */
#define SHT_PARISC_ANNOT	0x70000003

/* These are strictly for compatibility with the older elf32-hppa
   implementation.  Hopefully we can eliminate them in the future.  */
/* Optional section holding argument location/relocation info.  */
#define SHT_PARISC_SYMEXTN    SHT_LOPROC+8

/* Option section for linker stubs.  */
#define SHT_PARISC_STUBS      SHT_LOPROC+9

/* Processor specific section flags.  */

/* Section contains code compiled for static branch prediction.  */
#define SHF_PARISC_SBP		0x80000000

/* Section should be allocated from from GP.  */
#define SHF_PARISC_HUGE		0x40000000

/* Section should go near GP.  */
#define SHF_PARISC_SHORT	0x20000000


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

/* ELF/HPPA relocation types */

/* Note: PA-ELF is defined to use only RELA relocations.  */
#include "elf/reloc-macros.h"

START_RELOC_NUMBERS (elf_hppa_reloc_type)
RELOC_NUMBER (R_PARISC_NONE,	         0) /* No reloc */

/*		Data / Inst. Format	   Relocation Expression	  */

RELOC_NUMBER (R_PARISC_DIR32,	   	 1)
/*		32-bit word            	   symbol + addend    		  */

RELOC_NUMBER (R_PARISC_DIR21L,	   	 2)
/*		long immediate (7)	   LR(symbol, addend) 		  */

RELOC_NUMBER (R_PARISC_DIR17R,	   	 3)
/*		branch external (19)	   RR(symbol, addend) 		  */

RELOC_NUMBER (R_PARISC_DIR17F,	   	 4)
/*		branch external (19)	   symbol + addend    		  */

RELOC_NUMBER (R_PARISC_DIR14R,	   	 6)
/*		load/store (1)		   RR(symbol, addend) 		  */

RELOC_NUMBER (R_PARISC_DIR14F,	   	 7)
/*		load/store (1)		   symbol, addend 		  */

/* PC-relative relocation types
   Typically used for calls.
   Note PCREL17C and PCREL17F differ only in overflow handling.
   PCREL17C never reports a relocation error.

   When supporting argument relocations, function calls must be
   accompanied by parameter relocation information.  This information is
   carried in the ten high-order bits of the addend field.  The remaining
   22 bits of of the addend field are sign-extended to form the Addend.

   Note the code to build argument relocations depends on the
   addend being zero.  A consequence of this limitation is GAS
   can not perform relocation reductions for function symbols.  */

RELOC_NUMBER (R_PARISC_PCREL12F,  	 8)
/*		op & branch (17)	   symbol - PC - 8 + addend    	  */

RELOC_NUMBER (R_PARISC_PCREL32,   	 9)
/*		32-bit word		   symbol - PC - 8 + addend    	  */

RELOC_NUMBER (R_PARISC_PCREL21L,  	10)
/*		long immediate (7)	   L(symbol - PC - 8 + addend) 	  */

RELOC_NUMBER (R_PARISC_PCREL17R,  	11)
/*		branch external (19)	   R(symbol - PC - 8 + addend) 	  */

RELOC_NUMBER (R_PARISC_PCREL17F,  	12)
/*		branch (20)		   symbol - PC - 8 + addend    	  */

RELOC_NUMBER (R_PARISC_PCREL17C,  	13)
/*		branch (20)		   symbol - PC - 8 + addend    	  */

RELOC_NUMBER (R_PARISC_PCREL14R,  	14)
/*		load/store (1)		   R(symbol - PC - 8 + addend) 	  */

RELOC_NUMBER (R_PARISC_PCREL14F,  	15)
/*		load/store (1)             symbol - PC - 8 + addend    	  */


/* DP-relative relocation types.  */
RELOC_NUMBER (R_PARISC_DPREL21L,  	18)
/*		long immediate (7)         LR(symbol - GP, addend)  	  */

RELOC_NUMBER (R_PARISC_DPREL14WR, 	19)
/*		load/store mod. comp. (2)  RR(symbol - GP, addend)  	  */

RELOC_NUMBER (R_PARISC_DPREL14DR, 	20)
/*		load/store doubleword (3)  RR(symbol - GP, addend)  	  */

RELOC_NUMBER (R_PARISC_DPREL14R,  	22)
/*		load/store (1)             RR(symbol - GP, addend)  	  */

RELOC_NUMBER (R_PARISC_DPREL14F,  	23)
/*		load/store (1)             symbol - GP + addend     	  */


/* Data linkage table (DLT) relocation types

   SOM DLT_REL fixup requests are used to for static data references
   from position-independent code within shared libraries.  They are
   similar to the GOT relocation types in some SVR4 implementations.  */

RELOC_NUMBER (R_PARISC_DLTREL21L,     	26)
/*		long immediate (7)         LR(symbol - GP, addend) 	  */

RELOC_NUMBER (R_PARISC_DLTREL14R,     	30)
/*		load/store (1)             RR(symbol - GP, addend) 	  */

RELOC_NUMBER (R_PARISC_DLTREL14F,     	31)
/*		load/store (1)             symbol - GP + addend    	  */


/* DLT indirect relocation types  */
RELOC_NUMBER (R_PARISC_DLTIND21L,     	34)
/*		long immediate (7)         L(ltoff(symbol + addend)) 	  */

RELOC_NUMBER (R_PARISC_DLTIND14R,     	38)
/*		load/store (1)             R(ltoff(symbol + addend)) 	  */

RELOC_NUMBER (R_PARISC_DLTIND14F,     	39)
/*		load/store (1)             ltoff(symbol + addend)    	  */


/* Base relative relocation types.  Ugh.  These imply lots of state */
RELOC_NUMBER (R_PARISC_SETBASE,       	40)
/*		none                       no reloc; base := sym     	  */

RELOC_NUMBER (R_PARISC_SECREL32,      	41)
/*		32-bit word                symbol - SECT + addend    	  */

RELOC_NUMBER (R_PARISC_BASEREL21L,    	42)
/*		long immediate (7)         LR(symbol - base, addend) 	  */

RELOC_NUMBER (R_PARISC_BASEREL17R,    	43)
/*		branch external (19)       RR(symbol - base, addend) 	  */

RELOC_NUMBER (R_PARISC_BASEREL17F,    	44)
/*		branch external (19)       symbol - base + addend    	  */

RELOC_NUMBER (R_PARISC_BASEREL14R,    	46)
/*		load/store (1)             RR(symbol - base, addend) 	  */

RELOC_NUMBER (R_PARISC_BASEREL14F,    	47)
/*		load/store (1)             symbol - base, addend     	  */


/* Segment relative relocation types.  */
RELOC_NUMBER (R_PARISC_SEGBASE,       	48)
/*		none                       no relocation; SB := sym  	  */

RELOC_NUMBER (R_PARISC_SEGREL32,      	49)
/*		32-bit word                symbol - SB + addend 	  */
  

/* Offsets from the PLT.  */  
RELOC_NUMBER (R_PARISC_PLTOFF21L,     	50)
/*		long immediate (7)         LR(pltoff(symbol), addend) 	  */

RELOC_NUMBER (R_PARISC_PLTOFF14R,     	54)
/*		load/store (1)             RR(pltoff(symbol), addend) 	  */

RELOC_NUMBER (R_PARISC_PLTOFF14F,     	55)
/*		load/store (1)             pltoff(symbol) + addend    	  */


RELOC_NUMBER (R_PARISC_LTOFF_FPTR32,  	57)
/*		32-bit word                ltoff(fptr(symbol+addend))     */

RELOC_NUMBER (R_PARISC_LTOFF_FPTR21L, 	58)
/*		long immediate (7)         L(ltoff(fptr(symbol+addend)))  */

RELOC_NUMBER (R_PARISC_LTOFF_FPTR14R, 	62)
/*		load/store (1)             R(ltoff(fptr(symbol+addend)))  */


RELOC_NUMBER (R_PARISC_FPTR64,        	64)
/*		64-bit doubleword          fptr(symbol+addend) 		  */


/* Plabel relocation types.  */	 
RELOC_NUMBER (R_PARISC_PLABEL32,      	65)
/*		32-bit word	  	   fptr(symbol) 		  */

RELOC_NUMBER (R_PARISC_PLABEL21L,     	66)
/*		long immediate (7)         L(fptr(symbol))		  */

RELOC_NUMBER (R_PARISC_PLABEL14R,     	70)
/*		load/store (1)             R(fptr(symbol))		  */