142 lines
4.1 KiB
C
142 lines
4.1 KiB
C
/* $NetBSD: md.h,v 1.4 1997/07/09 19:32:51 matthias Exp $ */
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/*
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* - ns32k dependent definitions
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*/
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#if defined(CROSS_LINKER) && defined(XHOST) && (XHOST==m68k || XHOST==sparc)
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#define NEED_SWAP
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#endif
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#define MAX_ALIGNMENT (sizeof (long))
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#define PAGSIZ __LDPGSZ
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#define N_SET_FLAG(ex,f) N_SETMAGIC(ex,N_GETMAGIC(ex), MID_MACHINE, \
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N_GETFLAG(ex)|(f))
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#define N_IS_DYNAMIC(ex) ((N_GETFLAG(ex) & EX_DYNAMIC))
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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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/*
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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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#define RELOC_STATICS_THROUGH_GOT_P(r) (1)
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#define JMPSLOT_NEEDS_RELOC (0)
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#define RELOC_INIT_SEGMENT_RELOC(r) ((r)->r_disp = 2)
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#define md_got_reloc(r) (0)
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#define md_get_rt_segment_addend(r,a) md_get_addend(r,a)
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/* Width of a Global Offset Table entry */
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#define GOT_ENTRY_SIZE 4
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typedef long got_t;
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typedef struct jmpslot {
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u_char code[6];
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u_short reloc_index;
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#define JMPSLOT_RELOC_MASK 0xffff
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} jmpslot_t;
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#define NOP 0xa2 /* NOP opcode */
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#define BSR 0x02a2 /* NOP BSR opcode */
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#define BR 0xeaa2 /* NOP BR opcode */
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#define BPT 0xf2 /* BPT opcode */
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static inline void _cachectl __P((void *, unsigned int));
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static inline void
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_cachectl(addr, bytes)
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void *addr;
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unsigned int bytes;
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{
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vm_offset_t start;
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for(start = (vm_offset_t) addr & 0xfffffff0;
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start < (vm_offset_t) addr + bytes; start += 0x10)
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cinv(start);
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}
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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_link_object(l,n)
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# define md_swapout_sod(l,n) swapout_link_object(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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# 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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# 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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#endif /* CROSS_LINKER */
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