c79eac4c4c
NetBSD ld code except for local changes for dlopen() and friends and the hashing on the minor value of the shlibs. We should be binary compatible now with all their libraries. Obtained from: NetBSD
293 lines
9.7 KiB
C
293 lines
9.7 KiB
C
/*
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* Copyright (c) 1993 Paul Kranenburg
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. All advertising materials mentioning features or use of this software
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* must display the following acknowledgement:
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* This product includes software developed by Paul Kranenburg.
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* 4. The name of the author may not be used to endorse or promote products
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* derived from this software without specific prior written permission
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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* $Id: md.h,v 1.6 1994/02/13 20:43:07 jkh Exp $
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*/
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/*
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* SPARC machine dependent definitions
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*/
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#define MAX_ALIGNMENT (sizeof (double))
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#ifdef NetBSD
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#define PAGSIZ __LDPGSZ
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#define N_SET_FLAG(ex,f) N_SETMAGIC(ex,N_GETMAGIC(ex), \
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MID_MACHINE, N_GETFLAG(ex)|(f))
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#define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC))
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/*
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* Should be handled by a.out.h ?
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*/
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#define N_ADJUST(ex) (((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0)
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#define TEXT_START(ex) (N_TXTADDR(ex) + N_ADJUST(ex))
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#define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex))
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#else
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/* Get the SunOS a.out and relocation nomenclature */
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#define EX_DYNAMIC 1
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#define N_IS_DYNAMIC(ex) ((ex).a_dynamic)
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#define N_SET_FLAG(ex, f) { \
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(ex).a_dynamic = ((f) & EX_DYNAMIC); \
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}
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#undef relocation_info
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#define relocation_info reloc_info_sparc
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#define r_symbolnum r_index
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#endif /* NetBSD */
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#define N_BADMID(ex) \
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(N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE && \
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!md_midcompat(&(ex)))
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/* Sparc (Sun 4) macros */
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#define RELOC_ADDRESS(r) ((r)->r_address)
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#define RELOC_EXTERN_P(r) ((r)->r_extern)
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#define RELOC_TYPE(r) ((r)->r_symbolnum)
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#define RELOC_SYMBOL(r) ((r)->r_symbolnum)
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#define RELOC_MEMORY_SUB_P(r) 0
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#ifdef RTLD
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/* XXX - consider this making SUN_COMPAT --> repercussions on rrs.c */
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#define RELOC_MEMORY_ADD_P(r) 1
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#else
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#define RELOC_MEMORY_ADD_P(r) 0
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#endif
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#define RELOC_ADD_EXTRA(r) ((r)->r_addend)
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#define RELOC_PCREL_P(r) \
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(((r)->r_type >= RELOC_DISP8 && (r)->r_type <= RELOC_WDISP22) \
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|| ((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22) \
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|| (r)->r_type == RELOC_JMP_TBL)
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#define RELOC_VALUE_RIGHTSHIFT(r) (reloc_target_rightshift[(r)->r_type])
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#define RELOC_TARGET_SIZE(r) (reloc_target_size[(r)->r_type])
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#define RELOC_TARGET_BITPOS(r) 0
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#define RELOC_TARGET_BITSIZE(r) (reloc_target_bitsize[(r)->r_type])
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#define RELOC_JMPTAB_P(r) ((r)->r_type == RELOC_JMP_TBL)
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#define RELOC_BASEREL_P(r) \
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((r)->r_type >= RELOC_BASE10 && (r)->r_type <= RELOC_BASE22)
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#define RELOC_RELATIVE_P(r) ((r)->r_type == RELOC_RELATIVE)
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#define RELOC_COPY_DAT (RELOC_RELATIVE+1) /*XXX*/
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#define RELOC_COPY_P(r) ((r)->r_type == RELOC_COPY_DAT)
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#define RELOC_LAZY_P(r) ((r)->r_type == RELOC_JMP_SLOT)
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#define RELOC_STATICS_THROUGH_GOT_P(r) (1)
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#define JMPSLOT_NEEDS_RELOC (1)
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/*
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* Define the range of usable Global Offset Table offsets
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* when using sparc 13 bit relocation types (-4096 - 4092).
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*/
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#define MAX_GOTSIZE (8192)
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#define MAX_GOTOFF (4092)
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#define MIN_GOTOFF (-4096)
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#define CHECK_GOT_RELOC(r) \
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((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22)
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#define md_got_reloc(r) (-(r)->r_address)
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#define RELOC_INIT_SEGMENT_RELOC(r) ((r)->r_type = RELOC_32)
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#ifdef SUN_COMPAT
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/*
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* Sun plays games with `r_addend'
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*/
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#define md_get_rt_segment_addend(r,a) (0)
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#endif
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/* Width of a Global Offset Table entry */
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typedef long got_t;
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typedef struct jmpslot {
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u_long opcode1;
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u_long opcode2;
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u_long reloc_index;
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#define JMPSLOT_RELOC_MASK (0x003fffff) /* 22 bits */
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} jmpslot_t;
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#define SAVE 0x9de3bfa0 /* Build stack frame (opcode1) */
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#define SETHI 0x03000000 /* %hi(addr) -> %g1 (opcode1) */
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#define CALL 0x40000000 /* Call instruction (opcode2) */
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#define JMP 0x81c06000 /* Jump %g1 instruction (opcode2) */
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#define NOP 0x01000000 /* Delay slot NOP for (reloc_index) */
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#define TRAP 0x91d02001 /* ta 0x1 */
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/*
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* Byte swap defs for cross linking
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*/
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#if !defined(NEED_SWAP)
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#define md_swapin_exec_hdr(h)
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#define md_swapout_exec_hdr(h)
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#define md_swapin_symbols(s,n)
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#define md_swapout_symbols(s,n)
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#define md_swapin_zsymbols(s,n)
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#define md_swapout_zsymbols(s,n)
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#define md_swapin_reloc(r,n)
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#define md_swapout_reloc(r,n)
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#define md_swapin__dynamic(l)
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#define md_swapout__dynamic(l)
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#define md_swapin_section_dispatch_table(l)
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#define md_swapout_section_dispatch_table(l)
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#define md_swapin_so_debug(d)
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#define md_swapout_so_debug(d)
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#define md_swapin_rrs_hash(f,n)
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#define md_swapout_rrs_hash(f,n)
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#define md_swapin_sod(l,n)
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#define md_swapout_sod(l,n)
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#define md_swapout_jmpslot(j,n)
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#define md_swapout_got(g,n)
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#define md_swapin_ranlib_hdr(h,n)
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#define md_swapout_ranlib_hdr(h,n)
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#endif /* NEED_SWAP */
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#ifdef CROSS_LINKER
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#ifdef NEED_SWAP
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/* Define IO byte swapping routines */
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void md_swapin_exec_hdr __P((struct exec *));
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void md_swapout_exec_hdr __P((struct exec *));
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void md_swapin_reloc __P((struct relocation_info *, int));
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void md_swapout_reloc __P((struct relocation_info *, int));
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void md_swapout_jmpslot __P((jmpslot_t *, int));
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#define md_swapin_symbols(s,n) swap_symbols(s,n)
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#define md_swapout_symbols(s,n) swap_symbols(s,n)
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#define md_swapin_zsymbols(s,n) swap_zsymbols(s,n)
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#define md_swapout_zsymbols(s,n) swap_zsymbols(s,n)
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#define md_swapin__dynamic(l) swap__dynamic(l)
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#define md_swapout__dynamic(l) swap__dynamic(l)
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#define md_swapin_section_dispatch_table(l) swap_section_dispatch_table(l)
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#define md_swapout_section_dispatch_table(l) swap_section_dispatch_table(l)
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#define md_swapin_so_debug(d) swap_so_debug(d)
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#define md_swapout_so_debug(d) swap_so_debug(d)
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#define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n)
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#define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n)
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#define md_swapin_sod(l,n) swapin_sod(l,n)
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#define md_swapout_sod(l,n) swapout_sod(l,n)
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#define md_swapout_got(g,n) swap_longs((long*)(g),n)
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#define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
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#define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n)
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#define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) )
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#define md_swap_long(x) ( (((x) >> 24) & 0xff ) | (((x) >> 8 ) & 0xff00 ) | \
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(((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000))
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#define get_byte(p) ( ((unsigned char *)(p))[0] )
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#define get_short(p) ( ( ((unsigned char *)(p))[1] << 8) | \
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( ((unsigned char *)(p))[0] ) \
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)
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#define get_long(p) ( ( ((unsigned char *)(p))[3] << 24) | \
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( ((unsigned char *)(p))[2] << 16) | \
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( ((unsigned char *)(p))[1] << 8 ) | \
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( ((unsigned char *)(p))[0] ) \
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)
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#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
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#define put_short(p, v) { ((unsigned char *)(p))[1] = \
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((((unsigned long)(v)) >> 8) & 0xff); \
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((unsigned char *)(p))[0] = \
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((((unsigned long)(v)) ) & 0xff); }
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#define put_long(p, v) { ((unsigned char *)(p))[3] = \
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((((unsigned long)(v)) >> 24) & 0xff); \
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((unsigned char *)(p))[2] = \
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((((unsigned long)(v)) >> 16) & 0xff); \
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((unsigned char *)(p))[1] = \
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((((unsigned long)(v)) >> 8) & 0xff); \
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((unsigned char *)(p))[0] = \
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((((unsigned long)(v)) ) & 0xff); }
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#else /* We need not swap, but must pay attention to alignment: */
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#define md_swap_short(x) (x)
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#define md_swap_long(x) (x)
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#define get_byte(p) ( ((unsigned char *)(p))[0] )
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#define get_short(p) ( ( ((unsigned char *)(p))[0] << 8) | \
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( ((unsigned char *)(p))[1] ) \
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)
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#define get_long(p) ( ( ((unsigned char *)(p))[0] << 24) | \
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( ((unsigned char *)(p))[1] << 16) | \
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( ((unsigned char *)(p))[2] << 8 ) | \
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( ((unsigned char *)(p))[3] ) \
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)
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#define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); }
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#define put_short(p, v) { ((unsigned char *)(p))[0] = \
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((((unsigned long)(v)) >> 8) & 0xff); \
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((unsigned char *)(p))[1] = \
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((((unsigned long)(v)) ) & 0xff); }
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#define put_long(p, v) { ((unsigned char *)(p))[0] = \
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((((unsigned long)(v)) >> 24) & 0xff); \
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((unsigned char *)(p))[1] = \
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((((unsigned long)(v)) >> 16) & 0xff); \
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((unsigned char *)(p))[2] = \
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((((unsigned long)(v)) >> 8) & 0xff); \
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((unsigned char *)(p))[3] = \
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((((unsigned long)(v)) ) & 0xff); }
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#endif /* NEED_SWAP */
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#else /* Not a cross linker: use native */
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#define md_swap_short(x) (x)
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#define md_swap_long(x) (x)
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#define get_byte(where) (*(char *)(where))
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#define get_short(where) (*(short *)(where))
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#define get_long(where) (*(long *)(where))
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#define put_byte(where,what) (*(char *)(where) = (what))
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#define put_short(where,what) (*(short *)(where) = (what))
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#define put_long(where,what) (*(long *)(where) = (what))
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#endif /* CROSS_LINKER */
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