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authorSteve Chamberlain <sac@cygnus>1991-12-01 00:39:12 +0000
committerSteve Chamberlain <sac@cygnus>1991-12-01 00:39:12 +0000
commit0cda46cff12b3ee596b1d1ac521a3014e92b5492 (patch)
treefee107a1424a5ffc7b6a17b5ba4ca91565fb8cad /bfd/reloc.c
parent93351e91c53c3a4dcc69950f6542c2e7788d7851 (diff)
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New documentation style
Diffstat (limited to 'bfd/reloc.c')
-rw-r--r--bfd/reloc.c671
1 files changed, 374 insertions, 297 deletions
diff --git a/bfd/reloc.c b/bfd/reloc.c
index 4804e84..e22d920 100644
--- a/bfd/reloc.c
+++ b/bfd/reloc.c
@@ -18,162 +18,165 @@ You should have received a copy of the GNU General Public License
along with this program; if not, write to the Free Software
Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA. */
-/*doc*
-@section Relocations
+/*
+SECTION
+ Relocations
-BFD maintains relocations in much the same was as it maintains
-symbols; they are left alone until required, then read in en-mass and
-traslated into an internal form. There is a common routine
-@code{bfd_perform_relocation} which acts upon the canonical form to to
-the actual fixup.
+DESCRIPTION
+ BFD maintains relocations in much the same was as it maintains
+ symbols; they are left alone until required, then read in
+ en-mass and traslated into an internal form. There is a common
+ routine <<bfd_perform_relocation>> which acts upon the
+ canonical form to to the actual fixup.
-Note that relocations are maintained on a per section basis, whilst
-symbols are maintained on a per BFD basis.
+ Note that relocations are maintained on a per section basis,
+ whilst symbols are maintained on a per BFD basis.
-All a back end has to do to fit the BFD interface is to create as many
-@code{struct reloc_cache_entry} as there are relocations in a
-particuar section, and fill in the right bits:
+ All a back end has to do to fit the BFD interface is to create
+ as many <<struct reloc_cache_entry>> as there are relocations
+ in a particuar section, and fill in the right bits:
@menu
* typedef arelent::
-* reloc handling functions::
+* howto manager::
@end menu
*/
-#include "sysdep.h"
#include "bfd.h"
+#include "sysdep.h"
#include "libbfd.h"
-/*doc
-@node typedef arelent, Relocations, reloc handling functions, Relocations
-@section typedef arelent
+/*doc*
+@node typedef arelent, howto manager, Relocations, Relocations
+SUBSECTION
+ typedef arelent
*/
-/*proto* bfd_perform_relocation
-The relocation routine returns as a status an enumerated type:
+/*
+FUNCTION
+ bfd_perform_relocation
-*+++
+DESCRIPTION
+ The relocation routine returns as a status an enumerated type:
-$typedef enum bfd_reloc_status {
-No errors detected
+.typedef enum bfd_reloc_status {
+ No errors detected
-$ bfd_reloc_ok,
+. bfd_reloc_ok,
-The relocation was performed, but there was an overflow.
+ The relocation was performed, but there was an overflow.
-$ bfd_reloc_overflow,
+. bfd_reloc_overflow,
-The address to relocate was not within the section supplied
+ The address to relocate was not within the section supplied
-$ bfd_reloc_outofrange,
+. bfd_reloc_outofrange,
-Used by special functions
+ Used by special functions
-$ bfd_reloc_continue,
+. bfd_reloc_continue,
-Unused
+ Unused
-$ bfd_reloc_notsupported,
+. bfd_reloc_notsupported,
-Unsupported relocation size requested.
+ Unsupported relocation size requested.
-$ bfd_reloc_other,
+. bfd_reloc_other,
-The symbol to relocate against was undefined.
+ The symbol to relocate against was undefined.
-$ bfd_reloc_undefined,
+. bfd_reloc_undefined,
-The relocation was performed, but may not be ok - presently generated
-only when linking i960 coff files with i960 b.out symbols.
-
-$ bfd_reloc_dangerous
-$ }
-$ bfd_reloc_status_enum_type;
-
-*---
-
-*/
+ The relocation was performed, but may not be ok - presently
+ generated only when linking i960 coff files with i960 b.out symbols.
-/*proto*
+. bfd_reloc_dangerous
+. }
+. bfd_reloc_status_type;
-*+++
-$typedef struct reloc_cache_entry
-${
+.typedef struct reloc_cache_entry
+.{
-A pointer into the canonical table of pointers
+ A pointer into the canonical table of pointers
-$ struct symbol_cache_entry **sym_ptr_ptr;
+. struct symbol_cache_entry **sym_ptr_ptr;
-offset in section
+ offset in section
-$ rawdata_offset address;
+. rawdata_offset address;
-addend for relocation value
+ addend for relocation value
-$ bfd_vma addend;
+. bfd_vma addend;
-if sym is null this is the section
+ if sym is null this is the section
-$ struct sec *section;
+. struct sec *section;
-Pointer to how to perform the required relocation
+ Pointer to how to perform the required relocation
-$ CONST struct reloc_howto_struct *howto;
-$} arelent;
+. CONST struct reloc_howto_struct *howto;
+.} arelent;
-*---
*/
-/*doc*
-@table @code
-@item sym_ptr_ptr
-The symbol table pointer points to a pointer to the symbol associated with the
-relocation request. This would naturally be the pointer into the table
-returned by the back end's get_symtab action. @xref{Symbols}. The
-symbol is referenced through a pointer to a pointer so that tools like
-the linker can fix up all the symbols of the same name by modifying
-only one pointer. The relocation routine looks in the symbol and uses
-the base of the section the symbol is attached to and the value of
-the symbol as the initial relocation offset. If the symbol pointer is
-zero, then the section provided is looked up.
-@item address
-The address field gives the offset in bytes from the base of the
-section data which owns the relocation record to the first byte of
-relocatable information. The actual data relocated will be relative to
-this point - for example, a relocation type which modifies the bottom
-two bytes of a four byte word would not touch the first byte pointed
-to in a big endian world.
-@item addend
-The addend is a value provided by the back end to be added (!) to the
-relocation offset. Its interpretation is dependent upon the howto.
-For example, on the 68k the code:
-
-*+
+/*
+DESCRIPTION
+
+ o sym_ptr_ptr
+ The symbol table pointer points to a pointer to the symbol
+ associated with the relocation request. This would naturally
+ be the pointer into the table returned by the back end's
+ get_symtab action. @xref{Symbols}. The symbol is referenced
+ through a pointer to a pointer so that tools like the linker
+ can fix up all the symbols of the same name by modifying only
+ one pointer. The relocation routine looks in the symbol and
+ uses the base of the section the symbol is attached to and the
+ value of the symbol as the initial relocation offset. If the
+ symbol pointer is zero, then the section provided is looked up.
+
+ o address
+ The address field gives the offset in bytes from the base of
+ the section data which owns the relocation record to the first
+ byte of relocatable information. The actual data relocated
+ will be relative to this point - for example, a relocation
+ type which modifies the bottom two bytes of a four byte word
+ would not touch the first byte pointed to in a big endian
+ world. @item addend The addend is a value provided by the back
+ end to be added (!) to the relocation offset. Its
+ interpretation is dependent upon the howto. For example, on
+ the 68k the code:
+
+EXAMPLE
+
char foo[];
main()
{
return foo[0x12345678];
}
-*-
-Could be compiled into:
-*+
+DESCRIPTION
+ Could be compiled into:
+
+EXAMPLE
linkw fp,#-4
moveb @@#12345678,d0
extbl d0
unlk fp
rts
-*-
-This could create a reloc pointing to foo, but leave the offset in the data
-(something like)
+DESCRIPTION
+
+ This could create a reloc pointing to foo, but leave the
+ offset in the data (something like)
-*+
+EXAMPLE
RELOCATION RECORDS FOR [.text]:
-OFFSET TYPE VALUE
+offset type value
00000006 32 _foo
00000000 4e56 fffc ; linkw fp,#-4
@@ -181,54 +184,59 @@ OFFSET TYPE VALUE
0000000a 49c0 ; extbl d0
0000000c 4e5e ; unlk fp
0000000e 4e75 ; rts
-*-
-Using coff and an 88k, some instructions don't have enough space in them to
-represent the full address range, and pointers have to be loaded in
-two parts. So you'd get something like:
+DESCRIPTION
-*+
+ Using coff and an 88k, some instructions don't have enough
+ space in them to represent the full address range, and
+ pointers have to be loaded in two parts. So you'd get something like:
+
+EXAMPLE
or.u r13,r0,hi16(_foo+0x12345678)
ld.b r2,r13,lo16(_foo+0x12345678)
jmp r1
-*-
-This whould create two relocs, both pointing to _foo, and with 0x12340000
-in their addend field. The data would consist of:
-*+
+DESCRIPTION
+ This whould create two relocs, both pointing to _foo, and with
+ 0x12340000 in their addend field. The data would consist of:
+EXAMPLE
RELOCATION RECORDS FOR [.text]:
-OFFSET TYPE VALUE
+offset type value
00000002 HVRT16 _foo+0x12340000
00000006 LVRT16 _foo+0x12340000
00000000 5da05678 ; or.u r13,r0,0x5678
00000004 1c4d5678 ; ld.b r2,r13,0x5678
00000008 f400c001 ; jmp r1
-*-
-The relocation routine digs out the value from the data, adds it to
-the addend to get the original offset and then adds the value of _foo.
-Note that all 32 bits have to be kept around somewhere, to cope with
-carry from bit 15 to bit 16.
-
-On further example is the sparc and the a.out format. The sparc has a
-similar problem to the 88k, in that some instructions don't have
-room for an entire offset, but on the sparc the parts are created odd
-sized lumps. The designers of the a.out format chose not to use the
-data within the section for storing part of the offset; all the offset
-is kept within the reloc. Any thing in the data should be ignored.
-
-*+
+
+DESCRIPTION
+ The relocation routine digs out the value from the data, adds
+ it to the addend to get the original offset and then adds the
+ value of _foo. Note that all 32 bits have to be kept around
+ somewhere, to cope with carry from bit 15 to bit 16.
+
+ On further example is the sparc and the a.out format. The
+ sparc has a similar problem to the 88k, in that some
+ instructions don't have room for an entire offset, but on the
+ sparc the parts are created odd sized lumps. The designers of
+ the a.out format chose not to use the data within the section
+ for storing part of the offset; all the offset is kept within
+ the reloc. Any thing in the data should be ignored.
+EXAMPLE
save %sp,-112,%sp
sethi %hi(_foo+0x12345678),%g2
ldsb [%g2+%lo(_foo+0x12345678)],%i0
ret
restore
-*-
-Both relocs contains a pointer to foo, and the offsets would contain junk.
-*+
+DESCRIPTION
+ Both relocs contains a pointer to foo, and the offsets would
+ contain junk.
+
+EXAMPLE
+
RELOCATION RECORDS FOR [.text]:
-OFFSET TYPE VALUE
+offset type value
00000004 HI22 _foo+0x12345678
00000008 LO10 _foo+0x12345678
@@ -237,198 +245,214 @@ OFFSET TYPE VALUE
00000008 f048a000 ; ldsb [%g2+%lo(_foo+0)],%i0
0000000c 81c7e008 ; ret
00000010 81e80000 ; restore
-*-
-@item section
-The section field is only used when the symbol pointer field is null.
-It supplies the section into which the data should be relocated. The
-field's main use comes from assemblers which do most of the symbol fixups
-themselves; an assembler may take an internal reference to a label,
-but since it knows where the label is, it can turn the relocation
-request from a symbol lookup into a section relative relocation - the
-relocation emitted has no symbol, just a section to relocate against.
-
-I'm not sure what it means when both a symbol pointer an a section
-pointer are present. Some formats use this sort of mechanism to
-describe PIC relocations, but BFD can't to that sort of thing yet.
-@item howto
-The howto field can be imagined as a relocation instruction. It is a
-pointer to a struct which contains information on what to do with all
-the other information in the reloc record and data section. A back end
-would normally have a relocation instruction set and turn relocations
-into pointers to the correct structure on input - but it would be
-possible to create each howto field on demand.
-@end table
+
+DESCRIPTION
+
+ o section
+ The section field is only used when the symbol pointer field
+ is null. It supplies the section into which the data should be
+ relocated. The field's main use comes from assemblers which do
+ most of the symbol fixups themselves; an assembler may take an
+ internal reference to a label, but since it knows where the
+ label is, it can turn the relocation request from a symbol
+ lookup into a section relative relocation - the relocation
+ emitted has no symbol, just a section to relocate against. I'm
+ not sure what it means when both a symbol pointer an a section
+ pointer are present. Some formats use this sort of mechanism
+ to describe PIC relocations, but BFD can't to that sort of
+ thing yet. @item howto The howto field can be imagined as a
+ relocation instruction. It is a pointer to a struct which
+ contains information on what to do with all the other
+ information in the reloc record and data section. A back end
+ would normally have a relocation instruction set and turn
+ relocations into pointers to the correct structure on input -
+ but it would be possible to create each howto field on demand.
+
*/
-/*proto* reloc_howto_type
-The @code{reloc_howto_type} is a structure which contains all the
-information that BFD needs to know to tie up a back end's data.
+/*
+SUBSUBSECTION
+ <<reloc_howto_type>>
-*+++
+DESCRIPTION
+ The <<reloc_howto_type>> is a structure which contains all the
+ information that BFD needs to know to tie up a back end's data.
-$typedef CONST struct reloc_howto_struct
-${
-The type field has mainly a documetary use - the back end can to what
-it wants with it, though the normally the back end's external idea of
-what a reloc number would be would be stored in this field. For
-example, the a PC relative word relocation in a coff environment would
-have the type 023 - because that's what the outside world calls a
-R_PCRWORD reloc.
+.typedef CONST struct reloc_howto_struct
+.{
+ The type field has mainly a documetary use - the back end can
+ to what it wants with it, though the normally the back end's
+ external idea of what a reloc number would be would be stored
+ in this field. For example, the a PC relative word relocation
+ in a coff environment would have the type 023 - because that's
+ what the outside world calls a R_PCRWORD reloc.
-$ unsigned int type;
+. unsigned int type;
-The value the final relocation is shifted right by. This drops
-unwanted data from the relocation.
+ The value the final relocation is shifted right by. This drops
+ unwanted data from the relocation.
-$ unsigned int rightshift;
+. unsigned int rightshift;
-The size of the item to be relocated - 0, is one byte, 1 is 2 bytes, 3
-is four bytes.
+ The size of the item to be relocated - 0, is one byte, 1 is 2
+ bytes, 3 is four bytes.
-$ unsigned int size;
+. unsigned int size;
-Now obsolete
+ Now obsolete
-$ unsigned int bitsize;
+. unsigned int bitsize;
-Notes that the relocation is relative to the location in the data
-section of the addend. The relocation function will subtract from the
-relocation value the address of the location being relocated.
+ Notes that the relocation is relative to the location in the
+ data section of the addend. The relocation function will
+ subtract from the relocation value the address of the location
+ being relocated.
-$ boolean pc_relative;
+. boolean pc_relative;
-Now obsolete
+ Now obsolete
-$ unsigned int bitpos;
+. unsigned int bitpos;
-Now obsolete
+ Now obsolete
-$ boolean absolute;
+. boolean absolute;
-Causes the relocation routine to return an error if overflow is
-detected when relocating.
+ Causes the relocation routine to return an error if overflow
+ is detected when relocating.
-$ boolean complain_on_overflow;
+. boolean complain_on_overflow;
-If this field is non null, then the supplied function is called rather
-than the normal function. This allows really strange relocation
-methods to be accomodated (eg, i960 callj instructions).
+ If this field is non null, then the supplied function is
+ called rather than the normal function. This allows really
+ strange relocation methods to be accomodated (eg, i960 callj
+ instructions).
-$ bfd_reloc_status_enum_type (*special_function)();
+. bfd_reloc_status_type (*special_function)();
-The textual name of the relocation type.
+ The textual name of the relocation type.
-$ char *name;
+. char *name;
-When performing a partial link, some formats must modify the
-relocations rather than the data - this flag signals this.
+ When performing a partial link, some formats must modify the
+ relocations rather than the data - this flag signals this.
-$ boolean partial_inplace;
+. boolean partial_inplace;
-The src_mask is used to select what parts of the read in data are to
-be used in the relocation sum. Eg, if this was an 8 bit bit of data
-which we read and relocated, this would be 0x000000ff. When we have
-relocs which have an addend, such as sun4 extended relocs, the value
-in the offset part of a relocating field is garbage so we never use
-it. In this case the mask would be 0x00000000.
+ The src_mask is used to select what parts of the read in data
+ are to be used in the relocation sum. Eg, if this was an 8 bit
+ bit of data which we read and relocated, this would be
+ 0x000000ff. When we have relocs which have an addend, such as
+ sun4 extended relocs, the value in the offset part of a
+ relocating field is garbage so we never use it. In this case
+ the mask would be 0x00000000.
+. bfd_word src_mask;
-$ bfd_word src_mask;
-The dst_mask is what parts of the instruction are replaced into the
-instruction. In most cases src_mask == dst_mask, except in the above
-special case, where dst_mask would be 0x000000ff, and src_mask would
-be 0x00000000.
+ The dst_mask is what parts of the instruction are replaced
+ into the instruction. In most cases src_mask == dst_mask,
+ except in the above special case, where dst_mask would be
+ 0x000000ff, and src_mask would be 0x00000000.
+. bfd_word dst_mask;
-$ bfd_word dst_mask;
+ When some formats create PC relative instructions, they leave
+ the value of the pc of the place being relocated in the offset
+ slot of the instruction, so that a PC relative relocation can
+ be made just by adding in an ordinary offset (eg sun3 a.out).
+ Some formats leave the displacement part of an instruction
+ empty (eg m88k bcs), this flag signals the fact.
+. boolean pcrel_offset;
+.} reloc_howto_type;
-When some formats create PC relative instructions, they leave the
-value of the pc of the place being relocated in the offset slot of the
-instruction, so that a PC relative relocation can be made just by
-adding in an ordinary offset (eg sun3 a.out). Some formats leave the
-displacement part of an instruction empty (eg m88k bcs), this flag
-signals the fact.
+*/
-$ boolean pcrel_offset;
-$} reloc_howto_type;
-*---
+/*
+FUNCTION
+ HOWTO
+DESCRIPTION
+ The HOWTO define is horrible and will go away.
+
+
+.#define HOWTO(C, R,S,B, P, BI, ABS, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
+. {(unsigned)C,R,S,B, P, BI, ABS,O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
+
+DESCRIPTION
+ And will be replaced with the totally magic way. But for the
+ moment, we are compatible, so do it this way..
+
+
+.#define NEWHOWTO( FUNCTION, NAME,SIZE,REL,IN) HOWTO(0,0,SIZE,0,REL,0,false,false,FUNCTION, NAME,false,0,0,IN)
+.
+DESCRIPTION
+ Helper routine to turn a symbol into a relocation value.
+
+.#define HOWTO_PREPARE(relocation, symbol) \
+. { \
+. if (symbol != (asymbol *)NULL) { \
+. if (symbol->flags & BSF_FORT_COMM) { \
+. relocation = 0; \
+. } \
+. else { \
+. relocation = symbol->value; \
+. } \
+. } \
+. if (symbol->section != (asection *)NULL) { \
+. relocation += symbol->section->output_section->vma + \
+. symbol->section->output_offset; \
+. } \
+.}
*/
-/*proto* HOWTO
-The HOWTO define is horrible and will go away.
-*+
-#define HOWTO(C, R,S,B, P, BI, ABS, O, SF, NAME, INPLACE, MASKSRC, MASKDST, PC) \
- {(unsigned)C,R,S,B, P, BI, ABS,O,SF,NAME,INPLACE,MASKSRC,MASKDST,PC}
-*-
-
-And will be replaced with the totally magic way. But for the moment,
-we are compatible, so do it this way..
-
-*+
-#define NEWHOWTO( FUNCTION, NAME,SIZE,REL,IN) HOWTO(0,0,SIZE,0,REL,0,false,false,FUNCTION, NAME,false,0,0,IN)
-*-
-
-Helper routine to turn a symbol into a relocation value.
-
-*+
-
-
-#define HOWTO_PREPARE(relocation, symbol) \
- { \
- if (symbol != (asymbol *)NULL) { \
- if (symbol->flags & BSF_FORT_COMM) { \
- relocation = 0; \
- } \
- else { \
- relocation = symbol->value; \
- } \
- } \
- if (symbol->section != (asection *)NULL) { \
- relocation += symbol->section->output_section->vma + \
- symbol->section->output_offset; \
- } \
-}
-*-
-*/
+/*
+TYPEDEF
+ reloc_chain
-/*proto* reloc_chain
-*+
-typedef unsigned char bfd_byte;
+DESCRIPTION
-typedef struct relent_chain {
- arelent relent;
- struct relent_chain *next;
-} arelent_chain;
+ How relocs are tied together
-*-
+.typedef unsigned char bfd_byte;
+.
+.typedef struct relent_chain {
+. arelent relent;
+. struct relent_chain *next;
+.} arelent_chain;
*/
-/*proto*
-If an output_bfd is supplied to this function the generated image
-will be relocatable, the relocations are copied to the output file
-after they have been changed to reflect the new state of the world.
-There are two ways of reflecting the results of partial linkage in an
-output file; by modifying the output data in place, and by modifying
-the relocation record. Some native formats (eg basic a.out and basic
-coff) have no way of specifying an addend in the relocation type, so
-the addend has to go in the output data. This is no big deal since in
-these formats the output data slot will always be big enough for the
-addend. Complex reloc types with addends were invented to solve just
-this problem.
-*; PROTO(bfd_reloc_status_enum_type,
- bfd_perform_relocation,
+/*
+FUNCTION
+ bfd_perform_relocation
+
+DESCRIPTION
+ If an output_bfd is supplied to this function the generated
+ image will be relocatable, the relocations are copied to the
+ output file after they have been changed to reflect the new
+ state of the world. There are two ways of reflecting the
+ results of partial linkage in an output file; by modifying the
+ output data in place, and by modifying the relocation record.
+ Some native formats (eg basic a.out and basic coff) have no
+ way of specifying an addend in the relocation type, so the
+ addend has to go in the output data. This is no big deal
+ since in these formats the output data slot will always be big
+ enough for the addend. Complex reloc types with addends were
+ invented to solve just this problem.
+
+SYNOPSIS
+ bfd_reloc_status_type
+ bfd_perform_relocation
(bfd * abfd,
arelent *reloc_entry,
PTR data,
asection *input_section,
- bfd *output_bfd));
+ bfd *output_bfd);
*/
-bfd_reloc_status_enum_type
+bfd_reloc_status_type
DEFUN(bfd_perform_relocation,(abfd,
reloc_entry,
data,
@@ -441,7 +465,7 @@ DEFUN(bfd_perform_relocation,(abfd,
bfd *output_bfd)
{
bfd_vma relocation;
- bfd_reloc_status_enum_type flag = bfd_reloc_ok;
+ bfd_reloc_status_type flag = bfd_reloc_ok;
bfd_vma addr = reloc_entry->address ;
bfd_vma output_base = 0;
reloc_howto_type *howto = reloc_entry->howto;
@@ -460,7 +484,7 @@ DEFUN(bfd_perform_relocation,(abfd,
}
if (howto->special_function){
- bfd_reloc_status_enum_type cont;
+ bfd_reloc_status_type cont;
cont = howto->special_function(abfd,
reloc_entry,
symbol,
@@ -671,67 +695,120 @@ DEFUN(bfd_perform_relocation,(abfd,
-/*doc*
+/*
+@node howto manager, , typedef arelent, Relocations
+SECTION
+ The howto manager
-@section The howto manager
+DESCRIPTION
+ When an application wants to create a relocation, but doesn't
+ know what the target machine might call it, it can find out by
+ using this bit of code.
+*/
-When an application wants to create a relocation, but doesn't know
-what the target machine might call it, it can find out by using this
-bit of code.
+/*
+TYPEDEF
+ bfd_reloc_code_type
-*/
+DESCRIPTION
+ The insides of a reloc code
+
+.typedef enum bfd_reloc_code_real {
+
+ 16 bits wide, simple reloc
-/*proto* bfd_reloc_code_enum_type
+. BFD_RELOC_16,
-*+++
+ 8 bits wide, but used to form an address like 0xffnn
-$typedef enum
-${
+. BFD_RELOC_8_FFnn,
-16 bits wide, simple reloc
+ 8 bits wide, simple
-$ BFD_RELOC_16,
+. BFD_RELOC_8,
-8 bits wide, but used to form an address like 0xffnn
+ 8 bits wide, pc relative
-$ BFD_RELOC_8_FFnn,
+. BFD_RELOC_8_PCREL,
-8 bits wide, simple
+ The type of reloc used to build a contructor table - at the
+ moment probably a 32 bit wide abs address, but the cpu can
+ choose.
-$ BFD_RELOC_8,
+. BFD_RELOC_CTOR
-8 bits wide, pc relative
+. } bfd_reloc_code_real_type;
-$ BFD_RELOC_8_PCREL
-$ } bfd_reloc_code_enum_real_type;
-*---
*/
-/*proto* bfd_reloc_type_lookup
-This routine returns a pointer to a howto struct which when invoked,
-will perform the supplied relocation on data from the architecture
-noted.
+/*
+SECTION
+ bfd_reloc_type_lookup
-[Note] This function will go away.
+DESCRIPTION
+ This routine returns a pointer to a howto struct which when
+ invoked, will perform the supplied relocation on data from the
+ architecture noted.
-*; PROTO(CONST struct reloc_howto_struct *,
- bfd_reloc_type_lookup,
- (CONST bfd_arch_info_struct_type *arch, bfd_reloc_code_enum_type code));
+SYNOPSIS
+ CONST struct reloc_howto_struct *
+ bfd_reloc_type_lookup
+ (CONST bfd_arch_info_type *arch, bfd_reloc_code_type code);
*/
CONST struct reloc_howto_struct *
DEFUN(bfd_reloc_type_lookup,(arch, code),
- CONST bfd_arch_info_struct_type *arch AND
- bfd_reloc_code_enum_type code)
+ CONST bfd_arch_info_type *arch AND
+ bfd_reloc_code_type code)
{
return arch->reloc_type_lookup(arch, code);
}
+static reloc_howto_type bfd_howto_32 =
+ HOWTO(0, 00,2,32,false,0,false,true,0,"VRT32", false,0xffffffff,0xffffffff,true);
+/*
+INTERNAL FUNCTION
+ bfd_default_reloc_type_lookup
+
+DESCRIPTION
+ Provides a default relocation lookuperer for any architectue
+
+SYNOPSIS
+ CONST struct reloc_howto_struct *bfd_default_reloc_type_lookup
+ (CONST struct bfd_arch_info *,
+ bfd_reloc_code_type code);
+
+*/
+CONST struct reloc_howto_struct *
+DEFUN(bfd_default_reloc_type_lookup,(arch, code),
+ CONST struct bfd_arch_info *arch AND
+ bfd_reloc_code_type code)
+{
+ switch (code)
+ {
+ case BFD_RELOC_CTOR:
+ /* The type of reloc used in a ctor, which will be as wide as the
+ address - so either a 64, 32, or 16 bitter.. */
+ switch (arch->bits_per_address) {
+ case 64:
+ BFD_FAIL();
+ case 32:
+ return &bfd_howto_32;
+ case 16:
+ BFD_FAIL();
+ default:
+ BFD_FAIL();
+ }
+ default:
+ BFD_FAIL();
+ }
+return (struct reloc_howto_struct *)NULL;
+}