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binutils-gdb/bfd/libhppa.h
Jeff Law ad240a8289 * libhppa.h (R_HPPA_ESEL): New field selector. 
(e_esel): Similarly.
        * som.c (hppa_som_gen_reloc_type): If we encounter an e_esel,
        then generate R_COMP2 (PUSH_SYM), R_DATA_EXPR fixup stream.
        (som_write_fixups): Handle R_DATA_EXPR just like R_CODE_EXPR.
Making another stab at EH support on the PA.
1996-07-30 20:16:27 +00:00

601 lines
14 KiB
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/* HP PA-RISC SOM object file format: definitions internal to BFD.
Copyright (C) 1990, 91, 92, 93, 94, 95, 1996 Free Software Foundation, Inc.
Contributed by the Center for Software Science at the
University of Utah (pa-gdb-bugs@cs.utah.edu).
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. */
#ifndef _HPPA_H
#define _HPPA_H
#define BYTES_IN_WORD 4
#define PA_PAGESIZE 0x1000
#ifndef INLINE
#ifdef __GNUC__
#define INLINE inline
#else
#define INLINE
#endif /* GNU C? */
#endif /* INLINE */
#if __GNUC__ >= 2 && __GNUC_MINOR__ >= 7
/* Declare the functions with the unused attribute to avoid warnings. */
static INLINE unsigned int assemble_3 (unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_3 (unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned int assemble_12 (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_12 (unsigned int, unsigned int *,
unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long assemble_17 (unsigned int, unsigned int,
unsigned int)
__attribute__ ((__unused__));
static INLINE void dis_assemble_17 (unsigned int, unsigned int *,
unsigned int *, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long assemble_21 (unsigned int)
__attribute ((__unused__));
static INLINE void dis_assemble_21 (unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long sign_extend (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE unsigned int ones (int) __attribute ((__unused__));
static INLINE void sign_unext (unsigned int, unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long low_sign_extend (unsigned int, unsigned int)
__attribute__ ((__unused__));
static INLINE void low_sign_unext (unsigned int, unsigned int, unsigned int *)
__attribute__ ((__unused__));
static INLINE unsigned long hppa_field_adjust (unsigned long, unsigned long,
unsigned short)
__attribute__ ((__unused__));
static INLINE char bfd_hppa_insn2fmt (unsigned long)
__attribute__ ((__unused__));
static INLINE unsigned long hppa_rebuild_insn (bfd *, unsigned long,
unsigned long, unsigned long)
__attribute__ ((__unused__));
#endif /* gcc 2.7 or higher */
/* The PA instruction set variants. */
enum pa_arch {pa10 = 10, pa11 = 11, pa20 = 20};
/* HP PA-RISC relocation types */
enum hppa_reloc_field_selector_type
{
R_HPPA_FSEL = 0x0,
R_HPPA_LSSEL = 0x1,
R_HPPA_RSSEL = 0x2,
R_HPPA_LSEL = 0x3,
R_HPPA_RSEL = 0x4,
R_HPPA_LDSEL = 0x5,
R_HPPA_RDSEL = 0x6,
R_HPPA_LRSEL = 0x7,
R_HPPA_RRSEL = 0x8,
R_HPPA_NSEL = 0x9,
R_HPPA_NLSEL = 0xa,
R_HPPA_NLRSEL = 0xb,
R_HPPA_PSEL = 0xc,
R_HPPA_LPSEL = 0xd,
R_HPPA_RPSEL = 0xe,
R_HPPA_TSEL = 0xf,
R_HPPA_LTSEL = 0x10,
R_HPPA_RTSEL = 0x11,
R_HPPA_ESEL = 0xff
};
/* /usr/include/reloc.h defines these to constants. We want to use
them in enums, so #undef them before we start using them. We might
be able to fix this another way by simply managing not to include
/usr/include/reloc.h, but currently GDB picks up these defines
somewhere. */
#undef e_fsel
#undef e_lssel
#undef e_rssel
#undef e_lsel
#undef e_rsel
#undef e_ldsel
#undef e_rdsel
#undef e_lrsel
#undef e_rrsel
#undef e_nsel
#undef e_nlsel
#undef e_nlrsel
#undef e_psel
#undef e_lpsel
#undef e_rpsel
#undef e_tsel
#undef e_ltsel
#undef e_rtsel
#undef e_esel
#undef e_one
#undef e_two
#undef e_pcrel
#undef e_con
#undef e_plabel
#undef e_abs
/* for compatibility */
enum hppa_reloc_field_selector_type_alt
{
e_fsel = R_HPPA_FSEL,
e_lssel = R_HPPA_LSSEL,
e_rssel = R_HPPA_RSSEL,
e_lsel = R_HPPA_LSEL,
e_rsel = R_HPPA_RSEL,
e_ldsel = R_HPPA_LDSEL,
e_rdsel = R_HPPA_RDSEL,
e_lrsel = R_HPPA_LRSEL,
e_rrsel = R_HPPA_RRSEL,
e_nsel = R_HPPA_NSEL,
e_nlsel = R_HPPA_NLSEL,
e_nlrsel = R_HPPA_NLRSEL,
e_psel = R_HPPA_PSEL,
e_lpsel = R_HPPA_LPSEL,
e_rpsel = R_HPPA_RPSEL,
e_tsel = R_HPPA_TSEL,
e_ltsel = R_HPPA_LTSEL,
e_rtsel = R_HPPA_RTSEL,
e_esel = R_HPPA_ESEL
};
enum hppa_reloc_expr_type
{
R_HPPA_E_ONE = 0,
R_HPPA_E_TWO = 1,
R_HPPA_E_PCREL = 2,
R_HPPA_E_CON = 3,
R_HPPA_E_PLABEL = 7,
R_HPPA_E_ABS = 18
};
/* for compatibility */
enum hppa_reloc_expr_type_alt
{
e_one = R_HPPA_E_ONE,
e_two = R_HPPA_E_TWO,
e_pcrel = R_HPPA_E_PCREL,
e_con = R_HPPA_E_CON,
e_plabel = R_HPPA_E_PLABEL,
e_abs = R_HPPA_E_ABS
};
/* Relocations for function calls must be accompanied by parameter
relocation bits. These bits describe exactly where the caller has
placed the function's arguments and where it expects to find a return
value.
Both ELF and SOM encode this information within the addend field
of the call relocation. (Note this could break very badly if one
was to make a call like bl foo + 0x12345678).
The high order 10 bits contain parameter relocation information,
the low order 22 bits contain the constant offset. */
#define HPPA_R_ARG_RELOC(a) (((a) >> 22) & 0x3FF)
#define HPPA_R_CONSTANT(a) ((((int)(a)) << 10) >> 10)
#define HPPA_R_ADDEND(r,c) (((r) << 22) + ((c) & 0x3FFFFF))
/* Some functions to manipulate PA instructions. */
static INLINE unsigned int
assemble_3 (x)
unsigned int x;
{
return (((x & 1) << 2) | ((x & 6) >> 1)) & 7;
}
static INLINE void
dis_assemble_3 (x, r)
unsigned int x;
unsigned int *r;
{
*r = (((x & 4) >> 2) | ((x & 3) << 1)) & 7;
}
static INLINE unsigned int
assemble_12 (x, y)
unsigned int x, y;
{
return (((y & 1) << 11) | ((x & 1) << 10) | ((x & 0x7fe) >> 1)) & 0xfff;
}
static INLINE void
dis_assemble_12 (as12, x, y)
unsigned int as12;
unsigned int *x, *y;
{
*y = (as12 & 0x800) >> 11;
*x = ((as12 & 0x3ff) << 1) | ((as12 & 0x400) >> 10);
}
static INLINE unsigned long
assemble_17 (x, y, z)
unsigned int x, y, z;
{
unsigned long temp;
temp = ((z & 1) << 16) |
((x & 0x1f) << 11) |
((y & 1) << 10) |
((y & 0x7fe) >> 1);
return temp & 0x1ffff;
}
static INLINE void
dis_assemble_17 (as17, x, y, z)
unsigned int as17;
unsigned int *x, *y, *z;
{
*z = (as17 & 0x10000) >> 16;
*x = (as17 & 0x0f800) >> 11;
*y = (((as17 & 0x00400) >> 10) | ((as17 & 0x3ff) << 1)) & 0x7ff;
}
static INLINE unsigned long
assemble_21 (x)
unsigned int x;
{
unsigned long temp;
temp = ((x & 1) << 20) |
((x & 0xffe) << 8) |
((x & 0xc000) >> 7) |
((x & 0x1f0000) >> 14) |
((x & 0x003000) >> 12);
return temp & 0x1fffff;
}
static INLINE void
dis_assemble_21 (as21, x)
unsigned int as21, *x;
{
unsigned long temp;
temp = (as21 & 0x100000) >> 20;
temp |= (as21 & 0x0ffe00) >> 8;
temp |= (as21 & 0x000180) << 7;
temp |= (as21 & 0x00007c) << 14;
temp |= (as21 & 0x000003) << 12;
*x = temp;
}
static INLINE unsigned long
sign_extend (x, len)
unsigned int x, len;
{
return (int)(x >> (len - 1) ? (-1 << len) | x : x);
}
static INLINE unsigned int
ones (n)
int n;
{
unsigned int len_ones;
int i;
i = 0;
len_ones = 0;
while (i < n)
{
len_ones = (len_ones << 1) | 1;
i++;
}
return len_ones;
}
static INLINE void
sign_unext (x, len, result)
unsigned int x, len;
unsigned int *result;
{
unsigned int len_ones;
len_ones = ones (len);
*result = x & len_ones;
}
static INLINE unsigned long
low_sign_extend (x, len)
unsigned int x, len;
{
return (int)((x & 0x1 ? (-1 << (len - 1)) : 0) | x >> 1);
}
static INLINE void
low_sign_unext (x, len, result)
unsigned int x, len;
unsigned int *result;
{
unsigned int temp;
unsigned int sign;
unsigned int rest;
unsigned int one_bit_at_len;
unsigned int len_ones;
len_ones = ones (len);
one_bit_at_len = 1 << (len - 1);
sign_unext (x, len, &temp);
sign = temp & one_bit_at_len;
sign >>= (len - 1);
rest = temp & (len_ones ^ one_bit_at_len);
rest <<= 1;
*result = rest | sign;
}
/* Handle field selectors for PA instructions. */
static INLINE unsigned long
hppa_field_adjust (value, constant_value, r_field)
unsigned long value;
unsigned long constant_value;
unsigned short r_field;
{
switch (r_field)
{
case e_fsel: /* F : no change */
case e_nsel: /* N : no change */
value += constant_value;
break;
case e_lssel: /* LS : if (bit 21) then add 0x800
arithmetic shift right 11 bits */
value += constant_value;
if (value & 0x00000400)
value += 0x800;
value = (value & 0xfffff800) >> 11;
break;
case e_rssel: /* RS : Sign extend from bit 21 */
value += constant_value;
if (value & 0x00000400)
value |= 0xfffff800;
else
value &= 0x7ff;
break;
case e_lsel: /* L : Arithmetic shift right 11 bits */
case e_nlsel: /* NL : Arithmetic shift right 11 bits */
value += constant_value;
value = (value & 0xfffff800) >> 11;
break;
case e_rsel: /* R : Set bits 0-20 to zero */
value += constant_value;
value = value & 0x7ff;
break;
case e_ldsel: /* LD : Add 0x800, arithmetic shift
right 11 bits */
value += constant_value;
value += 0x800;
value = (value & 0xfffff800) >> 11;
break;
case e_rdsel: /* RD : Set bits 0-20 to one */
value += constant_value;
value |= 0xfffff800;
break;
case e_lrsel: /* LR : L with "rounded" constant */
case e_nlrsel: /* NLR : NL with "rounded" constant */
value = value + ((constant_value + 0x1000) & 0xffffe000);
value = (value & 0xfffff800) >> 11;
break;
case e_rrsel: /* RR : R with "rounded" constant */
value = value + ((constant_value + 0x1000) & 0xffffe000);
value = (value & 0x7ff) + constant_value - ((constant_value + 0x1000) & 0xffffe000);
break;
default:
abort ();
}
return value;
}
/* PA-RISC OPCODES */
#define get_opcode(insn) ((insn) & 0xfc000000) >> 26
/* FIXME: this list is incomplete. It should also be an enumerated
type rather than #defines. */
#define LDO 0x0d
#define LDB 0x10
#define LDH 0x11
#define LDW 0x12
#define LDWM 0x13
#define STB 0x18
#define STH 0x19
#define STW 0x1a
#define STWM 0x1b
#define COMICLR 0x24
#define SUBI 0x25
#define SUBIO 0x25
#define ADDIT 0x2c
#define ADDITO 0x2c
#define ADDI 0x2d
#define ADDIO 0x2d
#define LDIL 0x08
#define ADDIL 0x0a
#define MOVB 0x32
#define MOVIB 0x33
#define COMBT 0x20
#define COMBF 0x22
#define COMIBT 0x21
#define COMIBF 0x23
#define ADDBT 0x28
#define ADDBF 0x2a
#define ADDIBT 0x29
#define ADDIBF 0x2b
#define BVB 0x30
#define BB 0x31
#define BL 0x3a
#define BLE 0x39
#define BE 0x38
/* Given a machine instruction, return its format.
FIXME: opcodes which do not map to a known format
should return an error of some sort. */
static INLINE char
bfd_hppa_insn2fmt (insn)
unsigned long insn;
{
char fmt = -1;
unsigned char op = get_opcode (insn);
switch (op)
{
case ADDI:
case ADDIT:
case SUBI:
fmt = 11;
break;
case MOVB:
case MOVIB:
case COMBT:
case COMBF:
case COMIBT:
case COMIBF:
case ADDBT:
case ADDBF:
case ADDIBT:
case ADDIBF:
case BVB:
case BB:
fmt = 12;
break;
case LDO:
case LDB:
case LDH:
case LDW:
case LDWM:
case STB:
case STH:
case STW:
case STWM:
fmt = 14;
break;
case BL:
case BE:
case BLE:
fmt = 17;
break;
case LDIL:
case ADDIL:
fmt = 21;
break;
default:
fmt = 32;
break;
}
return fmt;
}
/* Insert VALUE into INSN using R_FORMAT to determine exactly what
bits to change. */
static INLINE unsigned long
hppa_rebuild_insn (abfd, insn, value, r_format)
bfd *abfd;
unsigned long insn;
unsigned long value;
unsigned long r_format;
{
unsigned long const_part;
unsigned long rebuilt_part;
switch (r_format)
{
case 11:
{
unsigned w1, w;
const_part = insn & 0xffffe002;
dis_assemble_12 (value, &w1, &w);
rebuilt_part = (w1 << 2) | w;
return const_part | rebuilt_part;
}
case 12:
{
unsigned w1, w;
const_part = insn & 0xffffe002;
dis_assemble_12 (value, &w1, &w);
rebuilt_part = (w1 << 2) | w;
return const_part | rebuilt_part;
}
case 14:
{
unsigned int ext;
const_part = insn & 0xffffc000;
low_sign_unext (value, 14, &ext);
return const_part | ext;
}
case 17:
{
unsigned w1, w2, w;
const_part = insn & 0xffe0e002;
dis_assemble_17 (value, &w1, &w2, &w);
rebuilt_part = (w2 << 2) | (w1 << 16) | w;
return const_part | rebuilt_part;
}
case 21:
{
unsigned int w;
const_part = insn & 0xffe00000;
dis_assemble_21 (value, &w);
return const_part | w;
}
case 32:
const_part = 0;
return value;
default:
abort ();
}
return insn;
}
#endif /* _HPPA_H */
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