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/* * $OpenBSD: md.h,v 1.6 2002/07/17 20:33:29 marc Exp $*/
/*
* - m88k dependent definitions
*/
#if defined(CROSS_LINKER)
#include <sys/endian.h>
#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_M88K
#include <mvme88k/exec.h>
#endif
#define MAX_ALIGNMENT (sizeof (double))
#define PAGSIZ 0x1000
#undef __LDPGSZ
#define __LDPGSZ 0x1000
#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))
#define N_BADMID(ex) \
(N_GETMID(ex) != 0 && N_GETMID(ex) != MID_MACHINE && \
!md_midcompat(&(ex)))
/*
* 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 TEXT_START(ex) (N_TXTADDR(ex))
#define DATA_START(ex) (N_DATADDR(ex) + N_ADJUST(ex))
#define RELOC_STATICS_THROUGH_GOT_P(r) (1)
#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;
#if 1 /* NOT REALLY */
#define NOP 0x4e71
#define BSRL 0x61ff /* BSR opcode with long offset */
#define BRAL 0x60ff /* BRA opcode with long offset */
#define BPT 0x4e42 /* breakpoint trap: trap #2 */
#endif
/* m88k */
enum reloc_type {
RELOC_LO16, /* lo16(sym) */
RELOC_HI16, /* hi16(sym) */
RELOC_PC16, /* bb0, bb1, bcnd */
RELOC_PC26, /* br, bsr */
RELOC_32, /* jump tables, etc */
RELOC_IW16, /* global access through linker regs 28 */
NO_RELOC,
RELOC_GLOB_DAT,
RELOC_JMP_SLOT,
RELOC_RELATIVE
};
#if 0
struct relocation_info_m88k {
unsigned int r_address; /* offset in text or data segment */
unsigned int r_symbolnum : 24, /* ordinal number of add symbol */
r_extern : 1, /* 1 if need to add symbol to value */
r_baserel : 1,
r_pcrel : 1,
r_jmptable : 1,
r_type : 4;
int r_addend;
};
#endif
struct r_relocation_info_m88k {
unsigned int r_address; /* offset in text or data segment */
unsigned int r_type : 4,
r_jmptable : 1,
r_pcrel : 1,
r_baserel : 1,
r_extern : 1, /* 1 if need to add symbol to value */
r_symbolnum : 24; /* ordinal number of add symbol */
int r_addend;
};
#undef relocation_info
#define relocation_info relocation_info_m88k
/*
* 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) md_in_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
#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); }
#define put_b26(p, v) { ((unsigned char *)(p))[0] = \
((((unsigned long)(v)) >> 24) & 0x03 | \
((unsigned char *)(p))[0] & 0xfc); \
((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); }
#ifdef NEED_SWAP
/* Define IO byte swapping routines */
void md_swapin_exec_hdr(struct exec *);
void md_swapout_exec_hdr(struct exec *);
void md_swapin_reloc(struct relocation_info *, int);
void md_swapout_reloc(struct relocation_info *, int);
void md_swapout_jmpslot(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))
#else /* We need not swap, but must pay attention to alignment: */
#define md_swap_short(x) (x)
#define md_swap_long(x) (x)
#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))
#define put_b26(where, what) (*(long *)(where) = ((*(long *)(where))\
& ~0x03ffffff) | ((what) & 0x03ffffff))
#endif /* CROSS_LINKER */
#if 0
#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
#define RELOC_MEMORY_ADD_P(r) 1
#undef RELOC_ADD_EXTRA
#define RELOC_PCREL_P(r) ((r)->r_pcrel)
#define RELOC_VALUE_RIGHTSHIFT(r) 0
#if defined(RTLD) && defined(SUN_COMPAT)
#define RELOC_TARGET_SIZE(r) (2) /* !!!!! Sun BUG compatible */
#else
#define RELOC_TARGET_SIZE(r) ((r)->r_length)
#endif
#define RELOC_TARGET_BITPOS(r) 0
#define RELOC_TARGET_BITSIZE(r) 32
#define RELOC_JMPTAB_P(r) ((r)->r_jmptable)
#define RELOC_BASEREL_P(r) ((r)->r_baserel)
#define RELOC_RELATIVE_P(r) ((r)->r_relative)
#define RELOC_COPY_P(r) ((r)->r_copy)
#define RELOC_LAZY_P(r) ((r)->r_jmptable)
#define CHECK_GOT_RELOC(r) (0)
#endif
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