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author | Jim Kingdon <jkingdon@engr.sgi.com> | 1993-07-19 04:53:24 +0000 |
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committer | Jim Kingdon <jkingdon@engr.sgi.com> | 1993-07-19 04:53:24 +0000 |
commit | 3624a4e2affdec33cd6c68c73180772137e612e6 (patch) | |
tree | 746a1901bbd911e312e726b31c1fc3744a6275ee /include/aout | |
parent | ee5fb95969100960fcb42f617821e8708894d100 (diff) | |
download | fsf-binutils-gdb-3624a4e2affdec33cd6c68c73180772137e612e6.zip fsf-binutils-gdb-3624a4e2affdec33cd6c68c73180772137e612e6.tar.gz fsf-binutils-gdb-3624a4e2affdec33cd6c68c73180772137e612e6.tar.bz2 |
* dynix3.h: New, for symmetry running dynix.
Diffstat (limited to 'include/aout')
-rw-r--r-- | include/aout/dynix3.h | 423 |
1 files changed, 423 insertions, 0 deletions
diff --git a/include/aout/dynix3.h b/include/aout/dynix3.h new file mode 100644 index 0000000..f2dd0ce --- /dev/null +++ b/include/aout/dynix3.h @@ -0,0 +1,423 @@ +/* + * a.out specifics for Sequent Symmetry running Dynix 3.x + */ +#ifndef A_OUT_DYNIX3_H +#define A_OUT_DYNIX3_H + +/* struct exec for Dynix 3 + * + * a_gdtbl and a_bootstrap are only for standalone binaries. + * Shared data fields are not supported by the kernel as of Dynix 3.1, + * but are supported by Dynix compiler programs. + */ +struct external_exec { + unsigned char e_info[4]; + unsigned char e_text[4]; + unsigned char e_data[4]; + unsigned char e_bss[4]; + unsigned char e_syms[4]; + unsigned char e_entry[4]; + unsigned char e_trsize[4]; + unsigned char e_drsize[4]; + unsigned char e_g_code[8], e_g_data[8], e_g_desc[8]; + unsigned char e_shdata[4]; + unsigned char e_shbss[4]; + unsigned char e_shdrsize[4]; + unsigned char e_bootstrap[44]; + unsigned char e_reserved[12]; + unsigned char e_version[4]; +}; + +/* + * Register information and structs for Dynix 3, + * culled from various system header files. + */ + +/* + * 80387 structure, from ptrace(2) and in u area + */ +struct fpusave { + unsigned short fpu_control, fpu_rsvd1; /* control word */ + unsigned short fpu_status, fpu_rsvd2; /* status word */ + unsigned short fpu_tag, fpu_rsvd3; /* tag word */ + unsigned long fpu_ip; /* IP offset */ + unsigned short fpu_cs, fpu_rsvd4; /* CS selector */ + unsigned long fpu_data_offset; /* data offset */ + unsigned short fpu_op_sel, fpu_rsvd5; /* operand selector */ + unsigned short fpu_stack[8][5]; /* 8 80-bit temp-reals from FPU stack*/ +}; + +/* + * WTL1167 structure, from ptrace(2) and in u area + */ +#define FPA_NREGS 31 + +struct fpasave { + long fpa_pcr; /* context register */ + long fpa_regs[FPA_NREGS]; /* register contents */ +}; + +/* + * structure used by ptrace(2) XPT_RREGS and XPT_WREGS + */ +struct pt_regset { + int pr_eax; + int pr_ebx; + int pr_ecx; + int pr_edx; + int pr_esi; + int pr_edi; + int pr_ebp; + int pr_esp; + int pr_eip; + int pr_flags; + struct fpusave pr_fpu; + struct fpasave pr_fpa; +}; + +/* + * Register offsets in u area of core file + */ +#define SS (5) +#define ESP (4) +#define FLAGS (3) +#define CS (2) +#define EIP (1) +#define EAX (0) +#define ECX (-1) +#define EDX (-2) +#define EBX (-3) +#define EBP (-5) +#define ESI (-6) +#define EDI (-7) + +/* + * Important offsets into Dynix struct user, for use in examination of a + * core file in a vaguely machine independant way. For lack of + * anything better, we use u_ar0 as a magic number, since it appears + * to have an identical value under all versions of Dynix 3. + */ +#define U_AR0_OFFSET 0x8 +#define U_AR0_VALUE 0x7fffffe8 +#define U_TSIZE_OFFSET 0x60 +#define U_DSIZE_OFFSET 0x64 +#define U_SSIZE_OFFSET 0x68 +#define U_FPUSAVE_OFFSET 0x3ff +#define U_FPASAVE_OFFSET 0x3b0 + +#define EXEC_BYTES_SIZE (4 + BYTES_IN_WORD * 7) + +#define OMAGIC 0x12eb /* .o */ +#define ZMAGIC 0x22eb /* zero @ 0, demand load */ +#define XMAGIC 0x32eb /* invalid @ 0, demand load */ +#define SMAGIC 0x42eb /* standalone, not supported here */ + +#define N_BADMAG(x) ((OMAGIC != N_MAGIC(x)) && \ + (ZMAGIC != N_MAGIC(x)) && \ + (XMAGIC != N_MAGIC(x)) && \ + (SMAGIC != N_MAGIC(x))) + +#define TEXT_START_ADDR 0x1000 + +#define PAGE_SIZE 0x1000 +#define SEGMENT_SIZE PAGE_SIZE + +#define STACK_END_ADDR (0x40000000 - PAGE_SIZE) + +#define N_SET_MACHTYPE(exec, machtype) \ +((exec).a_info = \ + ((exec).a_info&0xff00ffff) | ((((int)(machtype))&0xff) << 16)) + +#define N_SET_FLAGS(exec, flags) \ +((exec).a_info = \ + ((exec).a_info&0x00ffffff) | (((flags) & 0xff) << 24)) + +#define N_SET_MAGIC(exec, magic) \ +((exec).a_info = (((exec).a_info & 0xffff0000) | ((magic) & 0xffff))) + +#define N_MACHTYPE(exec) ((enum machine_type)(((exec).a_info >> 16) & 0xff)) +#define N_MAGIC(x) ((x).a_info & 0xffff) + +#define N_MAGIC_EXTERNAL(x) ((x).a_magic) + +#define N_ADDRADJ(x) ((ZMAGIC == N_MAGIC(x) || XMAGIC == N_MAGIC(x)) ? 0x1000 : 0) + +#if 0 +/* Ignore shared segments for now... */ +#define N_TXTOFF(x) ((OMAGIC == N_MAGIC(x)) ? sizeof(struct exec) : 0) +#define N_DATAOFF(x) (N_TXTOFF(x) + (x).a_text - N_ADDRADJ(x)) +#define N_SHDATAOFF(x) (N_DATAOFF(x) + (x).a_data) +#define N_TROFF(x) (N_SHDATAOFF(x) + (x).a_shdata) +#define N_DROFF(x) (N_TROFF(x) + (x).a_trsize) +#define N_SHDROFF(x) (N_DROFF(x) + (x).a_drsize) +#define N_SYMOFF(x) (N_SHDROFF(x) + (x).a_shdrsize) +#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) +#endif + +#define N_TXTOFF(x) ((OMAGIC == N_MAGIC(x)) ? sizeof(x) : 0) +#define N_DATOFF(x) (N_TXTOFF(x) + (x).a_text - N_ADDRADJ(x)) +#define N_TRELOFF(x) (N_DATOFF(x) + (x).a_data) +#define N_DRELOFF(x) (N_TRELOFF(x) + (x).a_trsize) +#define N_SYMOFF(x) (N_DRELOFF(x) + (x).a_drsize) +#define N_STROFF(x) (N_SYMOFF(x) + (x).a_syms) + +#define N_TXTADDR(x) \ + (((OMAGIC == N_MAGIC(x)) || (SMAGIC == N_MAGIC(x))) ? 0 \ + : TEXT_START_ADDR) + +#define N_DATADDR(x) \ + (OMAGIC == N_MAGIC(x) ? (N_TXTADDR(x) + (x).a_text) \ + : (SEGMENT_SIZE + ((N_TXTADDR(x) + (x).a_text - 1) & \ + ~(SEGMENT_SIZE - 1)))) + +#define N_BSSADDR(x) (N_DATADDR(x) + (x).a_data) + +/* This may not be quite right */ +#define N_TXTSIZE(x) ((x).a_text) +/* relocation stuff */ + + +/* Relocations + + There are two types of relocation flavours for a.out systems, + standard and extended. The standard form is used on systems where + the instruction has room for all the bits of an offset to the operand, whilst the + extended form is used when an address operand has to be split over n + instructions. Eg, on the 68k, each move instruction can reference + the target with a displacement of 16 or 32 bits. On the sparc, move + instructions use an offset of 14 bits, so the offset is stored in + the reloc field, and the data in the section is ignored. +*/ + +/* This structure describes a single relocation to be performed. + The text-relocation section of the file is a vector of these structures, + all of which apply to the text section. + Likewise, the data-relocation section applies to the data section. */ + +struct reloc_std_external { + bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */ + bfd_byte r_index[3]; /* symbol table index of symbol */ + bfd_byte r_type[1]; /* relocation type */ +}; + +#define RELOC_STD_BITS_PCREL_BIG 0x80 +#define RELOC_STD_BITS_PCREL_LITTLE 0x01 + +#define RELOC_STD_BITS_LENGTH_BIG 0x60 +#define RELOC_STD_BITS_LENGTH_SH_BIG 5 /* To shift to units place */ +#define RELOC_STD_BITS_LENGTH_LITTLE 0x06 +#define RELOC_STD_BITS_LENGTH_SH_LITTLE 1 + +#define RELOC_STD_BITS_EXTERN_BIG 0x10 +#define RELOC_STD_BITS_EXTERN_LITTLE 0x08 + +#define RELOC_STD_BITS_BASEREL_BIG 0x08 +#define RELOC_STD_BITS_BASEREL_LITTLE 0x08 + +#define RELOC_STD_BITS_JMPTABLE_BIG 0x04 +#define RELOC_STD_BITS_JMPTABLE_LITTLE 0x04 + +#define RELOC_STD_BITS_RELATIVE_BIG 0x02 +#define RELOC_STD_BITS_RELATIVE_LITTLE 0x02 + +#define RELOC_STD_SIZE (BYTES_IN_WORD + 3 + 1) /* Bytes per relocation entry */ + +struct reloc_std_internal +{ + bfd_vma r_address; /* Address (within segment) to be relocated. */ + /* The meaning of r_symbolnum depends on r_extern. */ + unsigned int r_symbolnum:24; + /* Nonzero means value is a pc-relative offset + and it should be relocated for changes in its own address + as well as for changes in the symbol or section specified. */ + unsigned int r_pcrel:1; + /* Length (as exponent of 2) of the field to be relocated. + Thus, a value of 2 indicates 1<<2 bytes. */ + unsigned int r_length:2; + /* 1 => relocate with value of symbol. + r_symbolnum is the index of the symbol + in files the symbol table. + 0 => relocate with the address of a segment. + r_symbolnum is N_TEXT, N_DATA, N_BSS or N_ABS + (the N_EXT bit may be set also, but signifies nothing). */ + unsigned int r_extern:1; + /* The next three bits are for SunOS shared libraries, and seem to + be undocumented. */ + unsigned int r_baserel:1; /* Linkage table relative */ + unsigned int r_jmptable:1; /* pc-relative to jump table */ + unsigned int r_relative:1; /* "relative relocation" */ + /* unused */ + unsigned int r_pad:1; /* Padding -- set to zero */ +}; + + +/* EXTENDED RELOCS */ + +struct reloc_ext_external { + bfd_byte r_address[BYTES_IN_WORD]; /* offset of of data to relocate */ + bfd_byte r_index[3]; /* symbol table index of symbol */ + bfd_byte r_type[1]; /* relocation type */ + bfd_byte r_addend[BYTES_IN_WORD]; /* datum addend */ +}; + +#define RELOC_EXT_BITS_EXTERN_BIG 0x80 +#define RELOC_EXT_BITS_EXTERN_LITTLE 0x01 + +#define RELOC_EXT_BITS_TYPE_BIG 0x1F +#define RELOC_EXT_BITS_TYPE_SH_BIG 0 +#define RELOC_EXT_BITS_TYPE_LITTLE 0xF8 +#define RELOC_EXT_BITS_TYPE_SH_LITTLE 3 + +#define RELOC_EXT_SIZE (BYTES_IN_WORD + 3 + 1 + BYTES_IN_WORD) /* Bytes per relocation entry */ + +enum reloc_type +{ + + + + + + /* simple relocations */ + RELOC_8, /* data[0:7] = addend + sv */ + RELOC_16, /* data[0:15] = addend + sv */ + RELOC_32, /* data[0:31] = addend + sv */ + /* pc-rel displacement */ + RELOC_DISP8, /* data[0:7] = addend - pc + sv */ + RELOC_DISP16, /* data[0:15] = addend - pc + sv */ + RELOC_DISP32, /* data[0:31] = addend - pc + sv */ + /* Special */ + RELOC_WDISP30, /* data[0:29] = (addend + sv - pc)>>2 */ + RELOC_WDISP22, /* data[0:21] = (addend + sv - pc)>>2 */ + RELOC_HI22, /* data[0:21] = (addend + sv)>>10 */ + RELOC_22, /* data[0:21] = (addend + sv) */ + RELOC_13, /* data[0:12] = (addend + sv) */ + RELOC_LO10, /* data[0:9] = (addend + sv) */ + RELOC_SFA_BASE, + RELOC_SFA_OFF13, + /* P.I.C. (base-relative) */ + RELOC_BASE10, /* Not sure - maybe we can do this the */ + RELOC_BASE13, /* right way now */ + RELOC_BASE22, + /* for some sort of pc-rel P.I.C. (?) */ + RELOC_PC10, + RELOC_PC22, + /* P.I.C. jump table */ + RELOC_JMP_TBL, + /* reputedly for shared libraries somehow */ + RELOC_SEGOFF16, + RELOC_GLOB_DAT, + RELOC_JMP_SLOT, + RELOC_RELATIVE, + + RELOC_11, + RELOC_WDISP2_14, + RELOC_WDISP19, + RELOC_HHI22, /* data[0:21] = (addend + sv) >> 42 */ + RELOC_HLO10, /* data[0:9] = (addend + sv) >> 32 */ + + /* 29K relocation types */ + RELOC_JUMPTARG, + RELOC_CONST, + RELOC_CONSTH, + + + /* Q . + What are the other ones, + Since this is a clean slate, can we throw away the ones we dont + understand ? Should we sort the values ? What about using a + microcode format like the 68k ? + */ + NO_RELOC + }; + + +struct reloc_internal { + bfd_vma r_address; /* offset of of data to relocate */ + long r_index; /* symbol table index of symbol */ + enum reloc_type r_type; /* relocation type */ + bfd_vma r_addend; /* datum addend */ +}; + +/* Q. + Should the length of the string table be 4 bytes or 8 bytes ? + + Q. + What about archive indexes ? + + */ + +#define EXTERNAL_NLIST_SIZE (BYTES_IN_WORD+4+BYTES_IN_WORD) + +/* + * All executables under Dynix are demand paged with read-only text, + * Thus no NMAGIC. + * + * ZMAGIC has a page of 0s at virtual 0, + * XMAGIC has an invalid page at virtual 0 + */ + +#define WRITE_HEADERS(abfd, execp) \ + { \ + if (abfd->flags & D_PAGED) \ + { \ + execp->a_text = obj_textsec (abfd)->_raw_size; \ + /* Kludge to distinguish old- and new-style ZMAGIC. \ + The latter includes the exec header in the text size. */ \ + if (obj_textsec(abfd)->filepos == EXEC_BYTES_SIZE) \ + execp->a_text += EXEC_BYTES_SIZE; \ + N_SET_MAGIC (*execp, ZMAGIC); \ + } \ + else \ + { \ + execp->a_text = obj_textsec (abfd)->_raw_size; \ + if (abfd->flags & WP_TEXT) \ + { N_SET_MAGIC (*execp, ZMAGIC); } \ + else \ + { N_SET_MAGIC(*execp, OMAGIC); } \ + } \ + if (abfd->flags & D_PAGED) \ + { \ + data_pad = BFD_ALIGN(obj_datasec(abfd)->_raw_size, PAGE_SIZE) \ + - obj_datasec(abfd)->_raw_size; \ + \ + if (data_pad > obj_bsssec(abfd)->_raw_size) \ + execp->a_bss = 0; \ + else \ + execp->a_bss = obj_bsssec(abfd)->_raw_size - data_pad; \ + execp->a_data = obj_datasec(abfd)->_raw_size + data_pad; \ + } \ + else \ + { \ + execp->a_data = obj_datasec (abfd)->_raw_size; \ + execp->a_bss = obj_bsssec (abfd)->_raw_size; \ + } \ + \ + execp->a_syms = bfd_get_symcount (abfd) * EXTERNAL_NLIST_SIZE; \ + execp->a_entry = bfd_get_start_address (abfd); \ + \ + execp->a_trsize = ((obj_textsec (abfd)->reloc_count) * \ + obj_reloc_entry_size (abfd)); \ + execp->a_drsize = ((obj_datasec (abfd)->reloc_count) * \ + obj_reloc_entry_size (abfd)); \ + NAME(aout,swap_exec_header_out) (abfd, execp, &exec_bytes); \ + \ + bfd_seek (abfd, 0L, false); \ + bfd_write ((PTR) &exec_bytes, 1, EXEC_BYTES_SIZE, abfd); \ + /* Now write out reloc info, followed by syms and strings */ \ + \ + if (bfd_get_symcount (abfd) != 0) \ + { \ + bfd_seek (abfd, \ + (long)(N_SYMOFF(*execp)), false); \ + \ + NAME(aout,write_syms)(abfd); \ + \ + bfd_seek (abfd, (long)(N_TRELOFF(*execp)), false); \ + \ + if (!NAME(aout,squirt_out_relocs) (abfd, obj_textsec (abfd))) return false; \ + bfd_seek (abfd, (long)(N_DRELOFF(*execp)), false); \ + \ + if (!NAME(aout,squirt_out_relocs)(abfd, obj_datasec (abfd))) return false; \ + } \ + } +#endif |