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author | Paul Richards <paul@FreeBSD.org> | 1993-11-03 23:41:59 +0000 |
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committer | Paul Richards <paul@FreeBSD.org> | 1993-11-03 23:41:59 +0000 |
commit | b9ae52e32a22d27416486dd65ba51ac1052384f4 (patch) | |
tree | ae9c655d7f7352058dd703d580c1f70430c1e5f7 /libexec/rtld-aout/i386/md.h | |
parent | 19bcb5e4a2321c910f9903d39de2957643afeadd (diff) | |
download | src-b9ae52e32a22d27416486dd65ba51ac1052384f4.tar.gz src-b9ae52e32a22d27416486dd65ba51ac1052384f4.zip |
Imported NetBSD's ld for shared libs.
Notes
Notes:
svn path=/head/; revision=696
Diffstat (limited to 'libexec/rtld-aout/i386/md.h')
-rw-r--r-- | libexec/rtld-aout/i386/md.h | 198 |
1 files changed, 198 insertions, 0 deletions
diff --git a/libexec/rtld-aout/i386/md.h b/libexec/rtld-aout/i386/md.h new file mode 100644 index 000000000000..ecd18159c214 --- /dev/null +++ b/libexec/rtld-aout/i386/md.h @@ -0,0 +1,198 @@ +/* + * $Id: md.h,v 1.3 1993/10/24 00:52:40 pk Exp $ - I386 dependent definitions + */ + + +#if defined(CROSS_LINKER) && defined(XHOST) && XHOST==sparc + +#define NEED_SWAP + +#endif + +#define MAX_ALIGNMENT (sizeof (long)) + +#ifdef NetBSD +#define PAGSIZ __LDPGSZ +#else +#define PAGSIZ 4096 +#endif + +#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)) + +#define RELOC_STATICS_THROUGH_GOT_P(r) (0) +#define JMPSLOT_NEEDS_RELOC (0) + +#define md_got_reloc(r) (0) + +#define md_get_rt_segment_addend(r,a) md_get_addend(r,a) + +/* Width of a Global Offset Table entry */ +#define GOT_ENTRY_SIZE 4 +typedef long got_t; + +typedef struct jmpslot { + u_short opcode; + u_short addr[2]; + u_short reloc_index; +#define JMPSLOT_RELOC_MASK 0xffff +} jmpslot_t; + +#define NOP 0x90 +#define CALL 0xe890 /* NOP + CALL opcode */ +#define JUMP 0xe990 /* NOP + JMP opcode */ +#define TRAP 0xcc /* INT 3 */ + +/* + * 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_link_dynamic(l) +#define md_swapout_link_dynamic(l) +#define md_swapin_link_dynamic_2(l) +#define md_swapout_link_dynamic_2(l) +#define md_swapin_ld_debug(d) +#define md_swapout_ld_debug(d) +#define md_swapin_rrs_hash(f,n) +#define md_swapout_rrs_hash(f,n) +#define md_swapin_link_object(l,n) +#define md_swapout_link_object(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_link_dynamic(l) swap_link_dynamic(l) +#define md_swapout_link_dynamic(l) swap_link_dynamic(l) +#define md_swapin_link_dynamic_2(l) swap_link_dynamic_2(l) +#define md_swapout_link_dynamic_2(l) swap_link_dynamic_2(l) +#define md_swapin_ld_debug(d) swap_ld_debug(d) +#define md_swapout_ld_debug(d) swap_ld_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_link_object(l,n) swapin_link_object(l,n) +#define md_swapout_link_object(l,n) swapout_link_object(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 */ + |