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Possible fix for bug #36. 

Also, fixed a lot of misconceptions vis-a-vis the common symbol vs. the
external, and symbol table type definitions. There's still a ways to
go, but now we're on the right track.
This commit is contained in:
Shamus Hammons 2015-11-25 22:39:34 -06:00
parent 5c7a0db5a2
commit ef0a4c2b77
2 changed files with 280 additions and 289 deletions
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@ -52,7 +52,7 @@
#define MAJOR 1 // Major version number
#define MINOR 3 // Minor version number
#define PATCH 6 // Patch release number
#define PATCH 7 // Patch release number
#ifdef WIN32
#define PLATFORM "Win32" // Release platform - Windows
@ -224,26 +224,32 @@ struct HREC
//#define T_COMMON (T_GLOBAL | T_EXTERN)
// Symbol Table - Type Definitions
// N.B.: T_EXT can be ORed with any of T_ABS, T_TEXT, TDATA, or T_BSS!
// N.B.: T_GLBL can be ORed with any of T_ABS, T_TEXT, TDATA, or T_BSS!
// Also, these are really a mashup of a struct, consisting of the
// following items: type (1 byte), other (1 byte), & descr. (2 bytes).
// Also, the type is not enough to distinguish between external &
// common symbols; for this, you need to go to the value field to see
// what's there (0=external, !0=common).
#define T_UNDF 0x00000000 // Undefined Symbol
#define T_EXT 0x01000000 // External Bit, OR'ed In (Global)
#define T_ABS 0x02000000 // Absolute Symbol (Equated)
#define T_TEXT 0x04000000 // TEXT Segment
#define T_DATA 0x06000000 // DATA Segment
#define T_BSS 0x08000000 // BSS Segment
#define T_UNDF 0x00000000 // Undefined symbol
#define T_GLBL 0x01000000 // Scoping bit, OR'ed in (global)
#define T_ABS 0x02000000 // Absolute symbol (equated)
#define T_TEXT 0x04000000 // TEXT segment
#define T_DATA 0x06000000 // DATA segment
#define T_BSS 0x08000000 // BSS segment
#define T_SEG (T_DATA | T_TEXT | T_BSS) // segment bits
// These macros are used with the TYPE field of a SYMBOL.
// They are also mostly WRONG
/*
Absolutes (equates) can't be externals (line 434)
-- they are non-relocatable
*/
#define iscommon(type) (((type) & T_EXT) == 0)
#define islocal(type) (((type) & T_EXT) == 0)
#define isglobal(type) ((type) & T_EXT)
#define isextern(type) ((type) & T_EXT)
#define iscommon(type) (((type) & T_GLBL) == 0)
#define islocal(type) (((type) & T_GLBL) == 0)
#define isglobal(type) ((type) & T_GLBL)
#define isextern(type) ((type) & T_GLBL)
/*
Shamus: