/* * $OpenBSD: md.h,v 1.6 2000/02/01 21:01:42 espie Exp $*/ /* * Copyright (c) 1993 Paul Kranenburg * All rights reserved. * * Redistribution and use in source and binary forms, with or without * modification, are permitted provided that the following conditions * are met: * 1. Redistributions of source code must retain the above copyright * notice, this list of conditions and the following disclaimer. * 2. Redistributions in binary form must reproduce the above copyright * notice, this list of conditions and the following disclaimer in the * documentation and/or other materials provided with the distribution. * 3. All advertising materials mentioning features or use of this software * must display the following acknowledgement: * This product includes software developed by Paul Kranenburg. * 4. The name of the author may not be used to endorse or promote products * derived from this software without specific prior written permission * * THIS SOFTWARE IS PROVIDED BY THE AUTHOR ``AS IS'' AND ANY EXPRESS OR * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED. * IN NO EVENT SHALL THE AUTHOR BE LIABLE FOR ANY DIRECT, INDIRECT, * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. * */ /* * SPARC machine dependent definitions */ #if defined(CROSS_LINKER) #include #if BYTE_ORDER != BIG_ENDIAN #define NEED_SWAP #endif #undef __LDPGSZ #undef ELF_TARG_DATA #undef ELF_TARG_MACH #undef relocation_info #undef MID_MACHINE #define MID_MACHINE MID_SPARC #include #endif #define MAX_ALIGNMENT (sizeof (double)) #if defined(__NetBSD__) || defined(__OpenBSD__) #define PAGSIZ __LDPGSZ #define N_SET_FLAG(ex,f) N_SETMAGIC(ex,N_GETMAGIC(ex), \ MID_MACHINE, N_GETFLAG(ex)|(f)) #define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC)) /* * Should be handled by a.out.h ? */ #define N_ADJUST(ex) (((ex).a_entry < PAGSIZ) ? -PAGSIZ : 0) #define TEXT_START(ex) (N_TXTADDR(ex) + N_ADJUST(ex)) #define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex)) #else /* Get the SunOS a.out and relocation nomenclature */ #define EX_DYNAMIC 1 #define N_IS_DYNAMIC(ex) ((ex).a_dynamic) #define N_SET_FLAG(ex, f) { \ (ex).a_dynamic = ((f) & EX_DYNAMIC); \ } #undef relocation_info #define relocation_info reloc_info_sparc #define r_symbolnum r_index #endif /* __NetBSD__ || __OpenBSD__ */ #define N_BADMID(ex) \ (N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE && \ !md_midcompat(&(ex))) /* Sparc (Sun 4) macros */ #define RELOC_ADDRESS(r) ((r)->r_address) #define RELOC_EXTERN_P(r) ((r)->r_extern) #define RELOC_TYPE(r) ((r)->r_symbolnum) #define RELOC_SYMBOL(r) ((r)->r_symbolnum) #define RELOC_MEMORY_SUB_P(r) 0 #ifdef RTLD /* XXX - consider this making SUN_COMPAT --> repercussions on rrs.c */ #define RELOC_MEMORY_ADD_P(r) 1 #else #define RELOC_MEMORY_ADD_P(r) 0 #endif #define RELOC_ADD_EXTRA(r) ((r)->r_addend) #define RELOC_PCREL_P(r) \ (((r)->r_type >= RELOC_DISP8 && (r)->r_type <= RELOC_WDISP22) \ || ((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22) \ || (r)->r_type == RELOC_JMP_TBL) #define RELOC_VALUE_RIGHTSHIFT(r) (reloc_target_rightshift[(r)->r_type]) #define RELOC_TARGET_SIZE(r) (reloc_target_size[(r)->r_type]) #define RELOC_TARGET_BITPOS(r) 0 #define RELOC_TARGET_BITSIZE(r) (reloc_target_bitsize[(r)->r_type]) #define RELOC_JMPTAB_P(r) ((r)->r_type == RELOC_JMP_TBL) #define RELOC_BASEREL_P(r) \ ((r)->r_type >= RELOC_BASE10 && (r)->r_type <= RELOC_BASE22) #define RELOC_RELATIVE_P(r) ((r)->r_type == RELOC_RELATIVE) #define RELOC_COPY_DAT (RELOC_RELATIVE+1) /*XXX*/ #define RELOC_COPY_P(r) ((r)->r_type == RELOC_COPY_DAT) #define RELOC_LAZY_P(r) ((r)->r_type == RELOC_JMP_SLOT) #define RELOC_STATICS_THROUGH_GOT_P(r) (1) #define JMPSLOT_NEEDS_RELOC (1) /* * Define the range of usable Global Offset Table offsets * when using sparc 13 bit relocation types (-4096 - 4092); * this is the case if the object files are compiles with `-fpic'. * IF a "large" model is used (i.e. `-fPIC'), pairs of * relocations are used which establish * 32-bit addressability of the GOT table. */ #define MAX_GOTOFF(t) ((t)==PIC_TYPE_SMALL?4092:LONG_MAX) #define MIN_GOTOFF(t) ((t)==PIC_TYPE_SMALL?-4096:LONG_MIN) #define RELOC_PIC_TYPE(r) ( \ ((r)->r_type == RELOC_BASE10 || (r)->r_type == RELOC_BASE22) \ ? PIC_TYPE_LARGE \ : ((r)->r_type==RELOC_BASE13 ? \ PIC_TYPE_SMALL : \ PIC_TYPE_NONE) ) #define ALLOW_SPARC_MIX #define CHECK_GOT_RELOC(r) \ ((r)->r_type == RELOC_PC10 || (r)->r_type == RELOC_PC22) #define md_got_reloc(r) (-(r)->r_address) #define RELOC_INIT_SEGMENT_RELOC(r) ((r)->r_type = RELOC_32) #ifdef SUN_COMPAT /* * Sun plays games with `r_addend' */ #define md_get_rt_segment_addend(r,a) (0) #endif /* Width of a Global Offset Table entry */ typedef long got_t; typedef struct jmpslot { u_long opcode1; u_long opcode2; u_long reloc_index; #define JMPSLOT_RELOC_MASK (0x003fffff) /* 22 bits */ } jmpslot_t; #define SAVE 0x9de3bfa0 /* Build stack frame (opcode1) */ #define SETHI 0x03000000 /* %hi(addr) -> %g1 (opcode1) */ #define CALL 0x40000000 /* Call instruction (opcode2) */ #define JMP 0x81c06000 /* Jump %g1 instruction (opcode2) */ #define NOP 0x01000000 /* Delay slot NOP for (reloc_index) */ #define TRAP 0x91d02001 /* ta 0x1 */ /* * Byte swap defs for cross linking */ #if !defined(NEED_SWAP) #define md_swapin_exec_hdr(h) #define md_swapout_exec_hdr(h) #define md_swapin_symbols(s,n) #define md_swapout_symbols(s,n) #define md_swapin_zsymbols(s,n) #define md_swapout_zsymbols(s,n) #define md_swapin_reloc(r,n) #define md_swapout_reloc(r,n) #define md_swapin__dynamic(l) #define md_swapout__dynamic(l) #define md_swapin_section_dispatch_table(l) #define md_swapout_section_dispatch_table(l) #define md_swapin_so_debug(d) #define md_swapout_so_debug(d) #define md_swapin_rrs_hash(f,n) #define md_swapout_rrs_hash(f,n) #define md_swapin_sod(l,n) #define md_swapout_sod(l,n) #define md_swapout_jmpslot(j,n) #define md_swapout_got(g,n) #define md_swapin_ranlib_hdr(h,n) #define md_swapout_ranlib_hdr(h,n) #endif /* NEED_SWAP */ #ifdef CROSS_LINKER #ifdef NEED_SWAP /* Define IO byte swapping routines */ void md_swapin_exec_hdr __P((struct exec *)); void md_swapout_exec_hdr __P((struct exec *)); void md_swapin_reloc __P((struct relocation_info *, int)); void md_swapout_reloc __P((struct relocation_info *, int)); void md_swapout_jmpslot __P((jmpslot_t *, int)); #define md_swapin_symbols(s,n) swap_symbols(s,n) #define md_swapout_symbols(s,n) swap_symbols(s,n) #define md_swapin_zsymbols(s,n) swap_zsymbols(s,n) #define md_swapout_zsymbols(s,n) swap_zsymbols(s,n) #define md_swapin__dynamic(l) swap__dynamic(l) #define md_swapout__dynamic(l) swap__dynamic(l) #define md_swapin_section_dispatch_table(l) swap_section_dispatch_table(l) #define md_swapout_section_dispatch_table(l) swap_section_dispatch_table(l) #define md_swapin_so_debug(d) swap_so_debug(d) #define md_swapout_so_debug(d) swap_so_debug(d) #define md_swapin_rrs_hash(f,n) swap_rrs_hash(f,n) #define md_swapout_rrs_hash(f,n) swap_rrs_hash(f,n) #define md_swapin_sod(l,n) swapin_sod(l,n) #define md_swapout_sod(l,n) swapout_sod(l,n) #define md_swapout_got(g,n) swap_longs((long*)(g),n) #define md_swapin_ranlib_hdr(h,n) swap_ranlib_hdr(h,n) #define md_swapout_ranlib_hdr(h,n) swap_ranlib_hdr(h,n) #define md_swap_short(x) ( (((x) >> 8) & 0xff) | (((x) & 0xff) << 8) ) #define md_swap_long(x) ( (((x) >> 24) & 0xff ) | (((x) >> 8 ) & 0xff00 ) | \ (((x) << 8 ) & 0xff0000) | (((x) << 24) & 0xff000000)) #define get_byte(p) ( ((unsigned char *)(p))[0] ) #define get_short(p) ( ( ((unsigned char *)(p))[1] << 8) | \ ( ((unsigned char *)(p))[0] ) \ ) #define get_long(p) ( ( ((unsigned char *)(p))[3] << 24) | \ ( ((unsigned char *)(p))[2] << 16) | \ ( ((unsigned char *)(p))[1] << 8 ) | \ ( ((unsigned char *)(p))[0] ) \ ) #define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); } #define put_short(p, v) { ((unsigned char *)(p))[1] = \ ((((unsigned long)(v)) >> 8) & 0xff); \ ((unsigned char *)(p))[0] = \ ((((unsigned long)(v)) ) & 0xff); } #define put_long(p, v) { ((unsigned char *)(p))[3] = \ ((((unsigned long)(v)) >> 24) & 0xff); \ ((unsigned char *)(p))[2] = \ ((((unsigned long)(v)) >> 16) & 0xff); \ ((unsigned char *)(p))[1] = \ ((((unsigned long)(v)) >> 8) & 0xff); \ ((unsigned char *)(p))[0] = \ ((((unsigned long)(v)) ) & 0xff); } #else /* We need not swap, but must pay attention to alignment: */ #define md_swap_short(x) (x) #define md_swap_long(x) (x) #define get_byte(p) ( ((unsigned char *)(p))[0] ) #define get_short(p) ( ( ((unsigned char *)(p))[0] << 8) | \ ( ((unsigned char *)(p))[1] ) \ ) #define get_long(p) ( ( ((unsigned char *)(p))[0] << 24) | \ ( ((unsigned char *)(p))[1] << 16) | \ ( ((unsigned char *)(p))[2] << 8 ) | \ ( ((unsigned char *)(p))[3] ) \ ) #define put_byte(p, v) { ((unsigned char *)(p))[0] = ((unsigned long)(v)); } #define put_short(p, v) { ((unsigned char *)(p))[0] = \ ((((unsigned long)(v)) >> 8) & 0xff); \ ((unsigned char *)(p))[1] = \ ((((unsigned long)(v)) ) & 0xff); } #define put_long(p, v) { ((unsigned char *)(p))[0] = \ ((((unsigned long)(v)) >> 24) & 0xff); \ ((unsigned char *)(p))[1] = \ ((((unsigned long)(v)) >> 16) & 0xff); \ ((unsigned char *)(p))[2] = \ ((((unsigned long)(v)) >> 8) & 0xff); \ ((unsigned char *)(p))[3] = \ ((((unsigned long)(v)) ) & 0xff); } #endif /* NEED_SWAP */ #else /* Not a cross linker: use native */ #define md_swap_short(x) (x) #define md_swap_long(x) (x) #define get_byte(where) (*(char *)(where)) #define get_short(where) (*(short *)(where)) #define get_long(where) (*(long *)(where)) #define put_byte(where,what) (*(char *)(where) = (what)) #define put_short(where,what) (*(short *)(where) = (what)) #define put_long(where,what) (*(long *)(where) = (what)) #endif /* CROSS_LINKER */