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Merge pull request #142 from greg-king5/disassemble-segment

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da65's segments feature
This commit is contained in:
Oliver Schmidt 2014-12-03 14:07:12 +01:00
commit 83549e2321
10 changed files with 262 additions and 180 deletions
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122
doc/da65.sgml
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@ -2,12 +2,14 @@
<article>
<title>da65 Users Guide
<author><url url="mailto:uz@cc65.org" name="Ullrich von Bassewitz">
<date>2003-08-08
<author>
<url url="mailto:uz@cc65.org" name="Ullrich von Bassewitz">,<newline>
<url url="mailto:greg.king5@verizon.net" name="Greg King">
<date>2014-11-23
<abstract>
da65 is a 6502/65C02 disassembler that is able to read user supplied
information about its input data for better results. The output is ready for
da65 is a 6502/65C02 disassembler that is able to read user-supplied
information about its input data, for better results. The output is ready for
feeding into ca65, the macro assembler supplied with the cc65 C compiler.
</abstract>
@ -23,7 +25,7 @@ the cc65 C compiler and generates output that is suitable for the ca65
macro assembler.
Besides generating output for ca65, one of the design goals was that the user
is able to feed additional information about the code into the disassembler
is able to feed additional information about the code into the disassembler,
for improved results. This information may include the location and size of
tables, and their format.
@ -106,11 +108,16 @@ Here is a description of all the command line options:
<tag><tt>--cpu type</tt></tag>
Set the CPU type. The option takes a parameter, which may be one of
<itemize>
<item>6502
<item>6502x
<item>65sc02
<item>65c02
<item>huc6280
</itemize>
6502, 6502x, 65sc02, 65c02, huc6280
6502x is the NMOS 6502 with illegal opcodes. huc6280 is the CPU of the PC
engine. Support for the 65816 is currently not available.
6502x is for the NMOS 6502 with unofficial opcodes. huc6280 is the CPU of
the PC engine. Support for the 65816 currently is not available.
<label id="option--formfeeds">
@ -125,7 +132,7 @@ Here is a description of all the command line options:
<tag><tt>-g, --debug-info</tt></tag>
This option adds the <tt/.DEBUGINFO/ command to the output file, so the
assembler will generate debug information when reassembling the generated
assembler will generate debug information when re-assembling the generated
output.
@ -241,7 +248,7 @@ unsupported.
The disassembler works by creating an attribute map for the whole address
space ($0000 - $FFFF). Initially, all attributes are cleared. Then, an
external info file (if given) is read. Disassembly is done in several passes.
In all passes with the exception of the last one, information about the
In all passes, with the exception of the last one, information about the
disassembled code is gathered and added to the symbol and attribute maps. The
last pass generates output using the information from the maps.
@ -275,19 +282,19 @@ braces. Attributes have a name followed by a value. The syntax of the value
depends on the type of the attribute. String attributes are places in double
quotes, numeric attributes may be specified as decimal numbers or hexadecimal
with a leading dollar sign. There are also attributes where the attribute
value is a keyword, in this case the keyword is given as is (without quotes or
value is a keyword; in this case, the keyword is given as-is (without quotes or
anything). Each attribute is terminated by a semicolon.
<tscreen><verb>
group-name { attribute1 attribute-value; attribute2 attribute-value; }
group-name { attribute1 attribute-value; attribute2 attribute-value; }
</verb></tscreen>
<sect1>Comments<p>
Comments start with a hash mark (<tt/#/) and extend from the position of
Comments start with a hash mark (<tt/#/); and, extend from the position of
the mark to the end of the current line. Hash marks inside of strings will
of course <em/not/ start a comment.
<em/not/ start a comment, of course.
<sect1>Specifying global options<label id="global-options"><p>
@ -543,18 +550,17 @@ disassembled code. The following attributes are recognized:
<tag><tt>END</tt></tag>
Followed by a numerical value. Specifies the end address of the segment. The
end address is last the address that is part of the segment.
end address is the last address that is a part of the segment.
<tag><tt>NAME</tt></tag>
The attribute is followed by a string value which gives the name of the
segment.
</descrip>
All attributes are mandatory. Segments may not overlap. Since there is no
explicit "end this segment" pseudo op, the disassembler cannot notify the
assembler that one segment has ended. This may lead to errors if you don't
define your segments carefully. As a rule of thumb, if you're using segments,
your should define segments for all disassembled code.
All attributes are mandatory. Segments must not overlap. The disassembler will
change back to the (default) <tt/.code/ segment after the end of each defined
segment. That might not be what you want. As a rule of thumb, if you're using
segments, you should define segments for all disassembled code.
<sect1>Specifying Assembler Includes<label id="infofile-asminc"><p>
@ -563,8 +569,8 @@ The <tt/ASMINC/ directive is used to give the names of input files containing
symbol assignments in assembler syntax:
<tscreen><verb>
Name = value
Name := value
Name = value
Name := value
</verb></tscreen>
The usual conventions apply for symbol names. Values may be specified as hex
@ -613,48 +619,46 @@ directives explained above:
};
# One segment for the whole stuff
SEGMENT { START $E000; END $FFFF; NAME kernal; };
SEGMENT { START $E000; END $FFFF; NAME "kernal"; };
RANGE { START $E612; END $E631; TYPE Code; };
RANGE { START $E632; END $E640; TYPE ByteTable; };
RANGE { START $EA51; END $EA84; TYPE RtsTable; };
RANGE { START $EC6C; END $ECAB; TYPE RtsTable; };
RANGE { START $ED08; END $ED11; TYPE AddrTable; };
RANGE { START $E612; END $E631; TYPE Code; };
RANGE { START $E632; END $E640; TYPE ByteTable; };
RANGE { START $EA51; END $EA84; TYPE RtsTable; };
RANGE { START $EC6C; END $ECAB; TYPE RtsTable; };
RANGE { START $ED08; END $ED11; TYPE AddrTable; };
# Zero page variables
LABEL { NAME "fnadr"; ADDR $90; SIZE 3; };
LABEL { NAME "sal"; ADDR $93; };
LABEL { NAME "sah"; ADDR $94; };
LABEL { NAME "sas"; ADDR $95; };
# Zero-page variables
LABEL { NAME "fnadr"; ADDR $90; SIZE 3; };
LABEL { NAME "sal"; ADDR $93; };
LABEL { NAME "sah"; ADDR $94; };
LABEL { NAME "sas"; ADDR $95; };
# Stack
LABEL { NAME "stack"; ADDR $100; SIZE 255; };
LABEL { NAME "stack"; ADDR $100; SIZE 255; };
# Indirect vectors
LABEL { NAME "cinv"; ADDR $300; SIZE 2; }; # IRQ
LABEL { NAME "cbinv"; ADDR $302; SIZE 2; }; # BRK
LABEL { NAME "nminv"; ADDR $304; SIZE 2; }; # NMI
LABEL { NAME "cinv"; ADDR $300; SIZE 2; }; # IRQ
LABEL { NAME "cbinv"; ADDR $302; SIZE 2; }; # BRK
LABEL { NAME "nminv"; ADDR $304; SIZE 2; }; # NMI
# Jump table at end of kernal ROM
LABEL { NAME "kscrorg"; ADDR $FFED; };
LABEL { NAME "kplot"; ADDR $FFF0; };
LABEL { NAME "kiobase"; ADDR $FFF3; };
LABEL { NAME "kgbye"; ADDR $FFF6; };
LABEL { NAME "kscrorg"; ADDR $FFED; };
LABEL { NAME "kplot"; ADDR $FFF0; };
LABEL { NAME "kiobase"; ADDR $FFF3; };
LABEL { NAME "kgbye"; ADDR $FFF6; };
# Hardware vectors
LABEL { NAME "hanmi"; ADDR $FFFA; };
LABEL { NAME "hares"; ADDR $FFFC; };
LABEL { NAME "hairq"; ADDR $FFFE; };
LABEL { NAME "hanmi"; ADDR $FFFA; };
LABEL { NAME "hares"; ADDR $FFFC; };
LABEL { NAME "hairq"; ADDR $FFFE; };
</verb></tscreen>
<sect>Copyright<p>
da65 (and all cc65 binutils) are (C) Copyright 1998-2007 Ullrich von
Bassewitz. For usage of the binaries and/or sources the following
da65 (and all cc65 binutils) is (C) Copyright 1998-2011, Ullrich von
Bassewitz. For usage of the binaries and/or sources, the following
conditions do apply:
This software is provided 'as-is', without any expressed or implied
@ -666,20 +670,16 @@ including commercial applications, and to alter it and redistribute it
freely, subject to the following restrictions:
<enum>
<item> The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
<item> Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
<item> This notice may not be removed or altered from any source
distribution.
<item> The origin of this software must not be misrepresented; you must not
claim that you wrote the original software. If you use this software
in a product, an acknowledgment in the product documentation would be
appreciated but is not required.
<item> Altered source versions must be plainly marked as such, and must not
be misrepresented as being the original software.
<item> This notice may not be removed or altered from any source
distribution.
</enum>
</article>

48
src/da65/attrtab.c
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@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2000-2006 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -66,6 +66,18 @@ void AddrCheck (unsigned Addr)
attr_t GetAttr (unsigned Addr)
/* Return the attribute for the given address */
{
/* Check the given address */
AddrCheck (Addr);
/* Return the attribute */
return AttrTab[Addr];
}
int SegmentDefined (unsigned Start, unsigned End)
/* Return true if the atSegment bit is set somewhere in the given range */
{
@ -79,14 +91,18 @@ int SegmentDefined (unsigned Start, unsigned End)
int HaveSegmentChange (unsigned Addr)
/* Return true if the segment change attribute is set for the given address */
int IsSegmentEnd (unsigned Addr)
/* Return true if a segment ends at the given address */
{
/* Check the given address */
AddrCheck (Addr);
return (GetAttr (Addr) & atSegmentEnd) != 0x0000;
}
/* Return the attribute */
return (AttrTab[Addr] & atSegmentChange) != 0;
int IsSegmentStart (unsigned Addr)
/* Return true if a segment starts at the given address */
{
return (GetAttr (Addr) & atSegmentStart) != 0x0000;
}
@ -145,18 +161,6 @@ void MarkAddr (unsigned Addr, attr_t Attr)
attr_t GetAttr (unsigned Addr)
/* Return the attribute for the given address */
{
/* Check the given address */
AddrCheck (Addr);
/* Return the attribute */
return AttrTab[Addr];
}
attr_t GetStyleAttr (unsigned Addr)
/* Return the style attribute for the given address */
{

65
src/da65/attrtab.h
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@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2000-2006 Ullrich von Bassewitz */
/* Römerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -47,33 +47,34 @@
typedef enum attr_t {
/* Styles */
atDefault = 0x0000, /* Default style */
atCode = 0x0001,
atIllegal = 0x0002,
atByteTab = 0x0003, /* Same as illegal */
atDByteTab = 0x0004,
atWordTab = 0x0005,
atDWordTab = 0x0006,
atAddrTab = 0x0007,
atRtsTab = 0x0008,
atTextTab = 0x0009,
atSkip = 0x000A, /* Skip code completely */
atDefault = 0x0000, /* Default style */
atCode = 0x0001,
atIllegal = 0x0002,
atByteTab = 0x0003, /* Same as illegal */
atDByteTab = 0x0004,
atWordTab = 0x0005,
atDWordTab = 0x0006,
atAddrTab = 0x0007,
atRtsTab = 0x0008,
atTextTab = 0x0009,
atSkip = 0x000A, /* Skip code completely */
/* Label flags */
atNoLabel = 0x0000, /* No label for this address */
atExtLabel = 0x0010, /* External label */
atIntLabel = 0x0020, /* Internally generated label */
atDepLabel = 0x0040, /* Dependent label */
atUnnamedLabel = 0x0080, /* Unnamed label */
atNoLabel = 0x0000, /* No label for this address */
atExtLabel = 0x0010, /* External label */
atIntLabel = 0x0020, /* Internally generated label */
atDepLabel = 0x0040, /* Dependent label */
atUnnamedLabel = 0x0080, /* Unnamed label */
atLabelDefined = 0x0100, /* True if we defined the label */
atLabelDefined = 0x0100, /* True if we defined the label */
atStyleMask = 0x000F, /* Output style */
atLabelMask = 0x00F0, /* Label information */
atStyleMask = 0x000F, /* Output style */
atLabelMask = 0x00F0, /* Label information */
/* Segment */
atSegment = 0x0100, /* Code is in a segment */
atSegmentChange = 0x0200, /* Either segment start or segment end */
atSegment = 0x0100, /* Code is in a segment */
atSegmentEnd = 0x0200, /* Segment end */
atSegmentStart = 0x0400, /* Segment start */
} attr_t;
@ -87,11 +88,17 @@ typedef enum attr_t {
void AddrCheck (unsigned Addr);
/* Check if the given address has a valid range */
attr_t GetAttr (unsigned Addr);
/* Return the attribute for the given address */
int SegmentDefined (unsigned Start, unsigned End);
/* Return true if the atSegment bit is set somewhere in the given range */
int HaveSegmentChange (unsigned Addr);
/* Return true if the segment change attribute is set for the given address */
int IsSegmentEnd (unsigned Addr);
/* Return true if a segment ends at the given address */
int IsSegmentStart (unsigned Addr);
/* Return true if a segment starts at the given address */
unsigned GetGranularity (attr_t Style);
/* Get the granularity for the given style */
@ -102,9 +109,6 @@ void MarkRange (unsigned Start, unsigned End, attr_t Attr);
void MarkAddr (unsigned Addr, attr_t Attr);
/* Mark an address with an attribute */
attr_t GetAttr (unsigned Addr);
/* Return the attribute for the given address */
attr_t GetStyleAttr (unsigned Addr);
/* Return the style attribute for the given address */
@ -114,5 +118,4 @@ attr_t GetLabelAttr (unsigned Addr);
/* End of attrtab.h */
#endif

12
src/da65/data.c
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@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2000-2007 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -65,12 +65,12 @@ static unsigned GetSpan (attr_t Style)
attr_t Attr;
if (MustDefLabel(PC+Count)) {
break;
}
}
Attr = GetAttr (PC+Count);
if ((Attr & atStyleMask) != Style) {
break;
}
if ((Attr & atSegmentChange)) {
if ((Attr & (atSegmentStart | atSegmentEnd))) {
break;
}
++Count;

7
src/da65/infofile.c
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@ -6,7 +6,7 @@
/* */
/* */
/* */
/* (C) 2000-2011, Ullrich von Bassewitz */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
@ -748,16 +748,13 @@ static void SegmentSection (void)
if (Start < 0) {
InfoError ("Start address is missing");
}
if (Start == End) {
InfoError ("Segment is empty");
}
if (Start > End) {
InfoError ("Start address of segment is greater than end address");
}
/* Check that segments do not overlap */
if (SegmentDefined ((unsigned) Start, (unsigned) End)) {
InfoError ("Segments cannot overlap");
InfoError ("Segments must not overlap");
}
/* Remember the segment data */

38
src/da65/main.c
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@ -6,7 +6,7 @@
/* */
/* */
/* */
/* (C) 1998-2011, Ullrich von Bassewitz */
/* (C) 1998-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
@ -60,6 +60,7 @@
#include "opctable.h"
#include "output.h"
#include "scanner.h"
#include "segment.h"
@ -347,6 +348,8 @@ static void OptVersion (const char* Opt attribute ((unused)),
static void OneOpcode (unsigned RemainingBytes)
/* Disassemble one opcode */
{
unsigned I;
/* Get the opcode from the current address */
unsigned char OPC = GetCodeByte (PC);
@ -356,6 +359,14 @@ static void OneOpcode (unsigned RemainingBytes)
/* Get the output style for the current PC */
attr_t Style = GetStyleAttr (PC);
/* If a segment begins here, then name that segment.
** Note that the segment is named even if its code is being skipped,
** because some of its later code might not be skipped.
*/
if (IsSegmentStart (PC)) {
StartSegment (GetSegmentStartName (PC), GetSegmentAddrSize (PC));
}
/* If we have a label at this address, output the label and an attached
** comment, provided that we aren't in a skip area.
*/
@ -371,7 +382,8 @@ static void OneOpcode (unsigned RemainingBytes)
** - ...if we have enough bytes remaining for the code at this address.
** - ...if the current instruction is valid for the given CPU.
** - ...if there is no label somewhere between the instruction bytes.
** If any of these conditions is false, switch to data mode.
** - ...if there is no segment change between the instruction bytes.
** If any one of those conditions is false, switch to data mode.
*/
if (Style == atDefault) {
if (D->Size > RemainingBytes) {
@ -381,9 +393,15 @@ static void OneOpcode (unsigned RemainingBytes)
Style = atIllegal;
MarkAddr (PC, Style);
} else {
unsigned I;
for (I = 1; I < D->Size; ++I) {
if (HaveLabel (PC+I) || HaveSegmentChange (PC+I)) {
for (I = PC + D->Size; --I > PC; ) {
if (HaveLabel (I) || IsSegmentStart (I)) {
Style = atIllegal;
MarkAddr (PC, Style);
break;
}
}
for (I = 0; I < D->Size - 1u; ++I) {
if (IsSegmentEnd (PC + I)) {
Style = atIllegal;
MarkAddr (PC, Style);
break;
@ -406,7 +424,6 @@ static void OneOpcode (unsigned RemainingBytes)
*/
if (D->Size <= RemainingBytes) {
/* Output labels within the next insn */
unsigned I;
for (I = 1; I < D->Size; ++I) {
ForwardLabel (I);
}
@ -453,7 +470,16 @@ static void OneOpcode (unsigned RemainingBytes)
DataByteLine (1);
++PC;
break;
}
/* Change back to the default CODE segment if
** a named segment stops at the current address.
*/
for (I = D->Size; I >= 1; --I) {
if (IsSegmentEnd (PC - I)) {
EndSegment ();
break;
}
}
}

54
src/da65/output.c
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@ -6,7 +6,7 @@
/* */
/* */
/* */
/* (C) 2000-2009, Ullrich von Bassewitz */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
@ -63,6 +63,8 @@ static unsigned Col = 1; /* Current column */
static unsigned Line = 0; /* Current line on page */
static unsigned Page = 1; /* Current output page */
static const char* SegmentName = 0; /* Name of current segment */
/*****************************************************************************/
@ -223,23 +225,6 @@ void DefConst (const char* Name, const char* Comment, unsigned Addr)
void StartSegment (const char* Name, unsigned AddrSize)
/* Start a segment */
{
if (Pass == PassCount) {
Output (".segment");
Indent (ACol);
if (AddrSize == ADDR_SIZE_DEFAULT) {
Output ("\"%s\"", Name);
} else {
Output ("\"%s\": %s", Name, AddrSizeToStr (AddrSize));
}
LineFeed ();
}
}
void DataByteLine (unsigned ByteCount)
/* Output a line with bytes */
{
@ -335,6 +320,39 @@ void SeparatorLine (void)
void StartSegment (const char* Name, unsigned AddrSize)
/* Start a segment */
{
if (Pass == PassCount) {
LineFeed ();
Output (".segment");
Indent (ACol);
SegmentName = Name;
Output ("\"%s\"", Name);
if (AddrSize != ADDR_SIZE_DEFAULT) {
Output (": %s", AddrSizeToStr (AddrSize));
}
LineFeed ();
LineFeed ();
}
}
void EndSegment (void)
/* End a segment */
{
LineFeed ();
Output ("; End of \"%s\" segment", SegmentName);
LineFeed ();
SeparatorLine ();
Output (".code");
LineFeed ();
LineFeed ();
}
void UserComment (const char* Comment)
/* Output a comment line */
{

21
src/da65/output.h
View File

@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2000-2007 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2000-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -74,12 +74,6 @@ void DefForward (const char* Name, const char* Comment, unsigned Offs);
void DefConst (const char* Name, const char* Comment, unsigned Addr);
/* Define an address constant */
void StartSegment (const char* Name, unsigned AddrSize);
/* Start a segment */
void EndSegment (void);
/* End a segment */
void OneDataByte (void);
/* Output a .byte line with the current code byte */
@ -99,6 +93,12 @@ void DataDWordLine (unsigned ByteCount);
void SeparatorLine (void);
/* Print a separator line */
void StartSegment (const char* Name, unsigned AddrSize);
/* Start a segment */
void EndSegment (void);
/* End a segment */
void UserComment (const char* Comment);
/* Output a comment line */
@ -111,5 +111,4 @@ void OutputSettings (void);
/* End of output.h */
#endif

60
src/da65/segment.c
View File

@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2007 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2007-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -58,18 +58,15 @@
typedef struct Segment Segment;
struct Segment {
Segment* NextStart; /* Pointer to next segment */
Segment* NextEnd; /* Pointer to next segment */
unsigned long Start;
unsigned long End;
unsigned AddrSize;
char Name[1]; /* Name, dynamically allocated */
};
/* Tables containing the segments. A segment is inserted using it's hash
** value. Collision is done by single linked lists.
/* Table containing the segments. A segment is inserted using its hash
** value. Collisions are handled by single-linked lists.
*/
static Segment* StartTab[HASH_SIZE]; /* Table containing segment starts */
static Segment* EndTab[HASH_SIZE]; /* Table containing segment ends */
@ -90,20 +87,53 @@ void AddAbsSegment (unsigned Start, unsigned End, const char* Name)
/* Fill in the data */
S->Start = Start;
S->End = End;
S->AddrSize = ADDR_SIZE_ABS;
memcpy (S->Name, Name, Len + 1);
/* Insert the segment into the hash tables */
/* Insert the segment into the hash table */
S->NextStart = StartTab[Start % HASH_SIZE];
StartTab[Start % HASH_SIZE] = S;
S->NextEnd = EndTab[End % HASH_SIZE];
EndTab[End % HASH_SIZE] = S;
/* Mark start and end of the segment */
MarkAddr (Start, atSegmentChange);
MarkAddr (End, atSegmentChange);
MarkAddr (Start, atSegmentStart);
MarkAddr (End, atSegmentEnd);
/* Mark the addresses within the segment */
MarkRange (Start, End, atSegment);
}
char* GetSegmentStartName (unsigned Addr)
/* Return the name of the segment which starts at the given address */
{
Segment* S = StartTab[Addr % HASH_SIZE];
/* Search the collision list for the exact address */
while (S != 0) {
if (S->Start == Addr) {
return S->Name;
}
S = S->NextStart;
}
return 0;
}
unsigned GetSegmentAddrSize (unsigned Addr)
/* Return the address size of the segment which starts at the given address */
{
Segment* S = StartTab[Addr % HASH_SIZE];
/* Search the collision list for the exact address */
while (S != 0) {
if (S->Start == Addr) {
return S->AddrSize;
}
S = S->NextStart;
}
return 0;
}

15
src/da65/segment.h
View File

@ -6,10 +6,10 @@
/* */
/* */
/* */
/* (C) 2007 Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* (C) 2007-2014, Ullrich von Bassewitz */
/* Roemerstrasse 52 */
/* D-70794 Filderstadt */
/* EMail: uz@cc65.org */
/* */
/* */
/* This software is provided 'as-is', without any expressed or implied */
@ -47,8 +47,13 @@
void AddAbsSegment (unsigned Start, unsigned End, const char* Name);
/* Add an absolute segment to the segment table */
char* GetSegmentStartName (unsigned Addr);
/* Return the name of the segment which starts at the given address */
unsigned GetSegmentAddrSize (unsigned Addr);
/* Return the address size of the segment which starts at the given address */
/* End of segment.h */
#endif