7542c0f275
* configure.in (vax-*-netbsdelf*, vax-*-netbsdaout*) (vax-*-netbsd*): New targets. * configure: Regenerate. * config/aout_gnu.h (enum machine_type): Add M_VAX4K_NETBSD. * config/tc-vax.c: Add support for ELF and PIC. (flag_want_pic): New flag. (float_cons): Fix prototype. (md_apply_fix3): Adjust for BFD_ASSEMBLER. (md_assemble): Introduce a new is_absolute local, and use it rather than repeating the test. Make fatal errors actually fatal by using as_fatal as appropriate. Adjust for BFD_ASSEMBLER. Add support for ELF. Add support for PIC. (md_convert_frag): Adjust for BFD_ASSEMBLER. (tc_aout_fix_to_chars): Only include if OBJ_AOUT and not BFD_ASSEMBLER. (vax_reg_parse): Make the % register prefix mandatory for ELF, optional for a.out, and not allowed for VMS. Adjust all callers. (md_create_short_jump): Add ATTRIBUTE_UNUSED to unused arguments. (md_create_long_jump): Likewise. (md_undefined_symbol): Likewise. (md_section_align): Likewise. (md_shortopts): Allow -k and -K for ELF. (md_parse_option): Set flag_want_pic if -k or -K. (tc_headers_hook): New function if OBJ_AOUT and not BFD_ASSEMBLER. (tc_gen_reloc): New function if BFD_ASSEMBLER. * config/tc-vax.h (tc_headers_hook): Remove. (TARGET_FORMAT): Set according to object format and target environment. (BFD_ARCH, TARGET_ARCH): Define. (NO_RELOC): Adjust for BFD_ASSEMBLER. (TC_RELOC_RTSYM_LOC_FIXUP, TC_FIX_ADJUSTABLE) (tc_fix_adjustable): Define if BFD_ASSEMBLER. * config/vax-inst.h (VAX_JSB, VAX_CALLS, VAX_CALLG): Define.
79 lines
3.6 KiB
C
79 lines
3.6 KiB
C
/* vax-inst.h - GNU - Part of vax.c
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Copyright 1987, 1992, 1995, 2000 Free Software Foundation, Inc.
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This file is part of GAS, the GNU Assembler.
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GAS is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2, or (at your option)
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any later version.
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GAS is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with GAS; see the file COPYING. If not, write to
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the Free Software Foundation, 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. */
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/*
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* This is part of vax-ins-parse.c & friends.
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* We want to parse a vax instruction text into a tree defined here.
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*/
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#define VIT_MAX_OPERANDS (6) /* maximum number of operands in one */
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/* single vax instruction */
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struct vop /* vax instruction operand */
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{
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short int vop_ndx; /* -1, or index register. eg 7=[R7] */
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short int vop_reg; /* -1, or register number. eg @I^#=0xF */
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/* Helps distinguish "abs" from "abs(PC)". */
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short int vop_mode; /* addressing mode 4 bits. eg I^#=0x9 */
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char vop_short; /* operand displacement length as written */
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/* ' '=none, "bilsw"=B^I^L^S^W^. */
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char vop_access; /* 'b'branch ' 'no-instruction 'amrvw'norm */
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char vop_width; /* Operand width, one of "bdfghloqw" */
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const char *vop_warn; /* warning message of this operand, if any */
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const char *vop_error; /* say if operand is inappropriate */
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char *vop_expr_begin; /* Unparsed expression, 1st char ... */
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char *vop_expr_end; /* ... last char. */
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unsigned char vop_nbytes; /* number of bytes in datum */
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};
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typedef long vax_opcodeT; /* For initialising array of opcodes */
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/* Some synthetic opcodes > 16 bits! */
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#define VIT_OPCODE_SYNTHETIC 0x80000000 /* Not real hardware instruction. */
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#define VIT_OPCODE_SPECIAL 0x40000000 /* Not normal branch optimising. */
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/* Never set without ..._SYNTHETIC */
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#define VAX_WIDTH_UNCONDITIONAL_JUMP '-' /* These are encoded into */
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#define VAX_WIDTH_CONDITIONAL_JUMP '?' /* vop_width when vop_access=='b' */
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#define VAX_WIDTH_WORD_JUMP '!' /* and VIT_OPCODE_SYNTHETIC set. */
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#define VAX_WIDTH_BYTE_JUMP ':' /* */
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#define VAX_JSB (0x16) /* Jump to subroutine */
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#define VAX_JMP (0x17) /* Useful for branch optimising. Jump instr*/
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#define VAX_PC_RELATIVE_MODE (0xef) /* Use it after VAX_JMP */
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#define VAX_ABSOLUTE_MODE (0x9F)/* Use as @#... */
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#define VAX_BRB (0x11) /* Canonical branch. */
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#define VAX_BRW (0x31) /* Another canonical branch */
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#define VAX_CALLS (0xFB) /* Call with arg list on stack */
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#define VAX_CALLG (0xFA) /* Call with arg list in memory */
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#define VAX_WIDEN_WORD (0x20) /* Add this to byte branch to get word br. */
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#define VAX_WIDEN_LONG (0x6) /* Add this to byte branch to get long jmp.*/
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/* Needs VAX_PC_RELATIVE_MODE byte after it*/
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struct vit /* vax instruction tree */
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{
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/* vit_opcode is char[] for portability. */
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char vit_opcode[sizeof (vax_opcodeT)];
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unsigned char vit_opcode_nbytes; /* How long is _opcode? (chars) */
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unsigned char vit_operands; /* */
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struct vop vit_operand[VIT_MAX_OPERANDS]; /* operands */
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const char *vit_error; /* "" or error text */
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};
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/* end of vax-inst.h */
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