Added floating point support to expression evaluator, introduced FLOAT token, fixup...
[rmac] / sect.h
diff --git a/sect.h b/sect.h
index 3cfbf6acee00501820814fbbe328e1d8f2ee264b..f2aee8da27ac65d4fe504a08ac4449d9a1a9f859 100644 (file)
--- a/sect.h
+++ b/sect.h
                                                sloc += 4; ch_size += 4; if(orgactive) orgaddr += 4;}
 #define D_rword(w)     {*chptr++=(uint8_t)(w); *chptr++=(uint8_t)((w)>>8); \
                                                sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;}
+#define D_single(w) {chcheck(4);*chptr++ = ((char *)&w)[3]; \
+                                               *chptr++ = ((char *)&w)[2]; \
+                                               *chptr++ = ((char *)&w)[1]; \
+                                               *chptr++=((char *)&w)[0]; \
+                                               sloc+=4; ch_size += 4; if(orgactive) orgaddr += 4;}
+#define D_double(w) {chcheck(8);*chptr++=(char)((*(unsigned long long *)&w)); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>8); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>16); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>24); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>32); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>40); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>48); \
+                                               *chptr++=(char)((*(unsigned long long *)&w)>>56); \
+                                               sloc+=8; ch_size += 8; if(orgactive) orgaddr += 8;}
+#ifdef _MSC_VER
+#define D_extend(w) {chcheck(12); *chptr++ = (char)((*(unsigned long long *)&w) >> 56); \
+*chptr++ = (char)(((*(unsigned long long *)&w) >> (52)) & 0xf); \
+*chptr++ = (char)(0); \
+*chptr++ = (char)(0); \
+*chptr++ = (char)(((*(unsigned long long *)&w) >> (48 - 3))|0x80 /* assume that the number is normalised */); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (40 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (32 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (24 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (16 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w) >> (8 - 3)); \
+*chptr++ = (char)((*(unsigned long long *)&w << 3)); \
+*chptr++=(char)(0); \
+       sloc+=12; ch_size += 12; if(orgactive) orgaddr += 12;}
+#elif defined(LITTLE_ENDIAN)
+#define D_extend(w) {chcheck(12);*chptr++=((char *)&w)[0]; \
+                                               *chptr++=((char *)&w)[1]; \
+                                               *chptr++=((char *)&w)[2]; \
+                                               *chptr++=((char *)&w)[3]; \
+                                               *chptr++=((char *)&w)[4]; \
+                                               *chptr++=((char *)&w)[5]; \
+                                               *chptr++=((char *)&w)[6]; \
+                                               *chptr++=((char *)&w)[7]; \
+                                               *chptr++=((char *)&w)[8]; \
+                                               *chptr++=((char *)&w)[9]; \
+                                               *chptr++=((char *)&w)[10]; \
+                                               *chptr++=((char *)&w)[11]; \
+                                               sloc+=12; ch_size += 12; if(orgactive) orgaddr += 12;}
+
+#else
+
+#error Please implement a non-byte swapped D_extend!
+
+#endif
 // Fill n bytes with zeroes
 #define D_ZEROFILL(n)  {memset(chptr, 0, n); chptr+=n; sloc+=n; ch_size+=n;\
                                                if (orgactive) orgaddr+=n;}
 #define FU_LBRA      0x4000            // Long branch, for short branch detect
 #define FU_DONE      0x8000            // Fixup has been done
 
+// FPU fixups
+// TODO: these are obviously bogus for now!
+#define FU_FLOATSING 0x0D0B            // Fixup 32-bit float
+#define FU_FLOATDOUB 0x0E0B            // Fixup 64-bit float
+#define FU_FLOATEXT  0x0F0B            // Fixup 96-bit float
+
 // Chunks are used to hold generated code and fixup records
 #define CHUNK  struct _chunk
 CHUNK {