FPU instructions debugged and stricter checks enforced

[rmac] / sect.h

diff --git a/sect.h b/sect.h
index ccb81b1c0ec7a785fe218eda3bfe83468c863341..3f6f28edfc55f1d7348935927fe8df2debeb0fae 100644 (file)
--- a/sect.h
+++ b/sect.h
@@ -1,9 +1,9 @@
 //
-// RMAC - Reboot's Macro Assembler for the Atari Jaguar Console System
+// RMAC - Reboot's Macro Assembler for all Atari computers
 // SECT.H - Code Generation, Fixups and Section Management
-// Copyright (C) 199x Landon Dyer, 2017 Reboot and Friends
+// Copyright (C) 199x Landon Dyer, 2011-2017 Reboot and Friends
 // RMAC derived from MADMAC v1.07 Written by Landon Dyer, 1986
-// Source utilised with the kind permission of Landon Dyer
+// Source utilized with the kind permission of Landon Dyer
 //
 
 #ifndef __SECT_H__
@@ -11,9 +11,8 @@
 
 #include "rmac.h"
 
-// Macros to deposit code in the current section
+// Macros to deposit code in the current section (in Big Endian)
 // D_rword deposits a "6502" format (low, high) word (01).
-// D_rlong deposits a MWC "canonical byte order" longword (2301).
 #define D_byte(b)      {*chptr++=(uint8_t)(b); sloc++; ch_size++; \
                                                if(orgactive) orgaddr++;}
 #define D_word(w)      {chcheck(2);*chptr++=(uint8_t)((w)>>8); \
@@ -24,11 +23,22 @@
                                                *chptr++=(uint8_t)((lw)>>8); \
                                                *chptr++=(uint8_t)(lw); \
                                                sloc += 4; ch_size += 4; if(orgactive) orgaddr += 4;}
-#define D_rword(w)     {*chptr++=(uint8_t)w; *chptr++=(uint8_t)(w>>8); \
+#define D_quad(qw)     {*chptr++=(uint8_t)((qw)>>56); \
+                                               *chptr++=(uint8_t)((qw)>>48);\
+                                               *chptr++=(uint8_t)((qw)>>40);\
+                                               *chptr++=(uint8_t)((qw)>>32);\
+                                               *chptr++=(uint8_t)((qw)>>24);\
+                                               *chptr++=(uint8_t)((qw)>>16);\
+                                               *chptr++=(uint8_t)((qw)>>8); \
+                                               *chptr++=(uint8_t)(qw); \
+                                               sloc += 8; ch_size += 8; if(orgactive) orgaddr += 8;}
+#define D_rword(w)     {*chptr++=(uint8_t)(w); *chptr++=(uint8_t)((w)>>8); \
                                                sloc+=2; ch_size+=2;if(orgactive) orgaddr += 2;}
-//#define D_rlong(lw)  {*chptr++=(uint8_t)(lw>>16);*chptr++=(uint8_t)(lw>>24);\
-//                                             *chptr++=(uint8_t)lw;*chptr++=(uint8_t)(lw>>8); \
-//                                             sloc+=4; ch_size += 4;if(orgactive) orgaddr += 4;}
+// This macro expects to get an array of uint8_ts with the hi bits in a[0] and
+// the low bits in a[11] (Big Endian).
+#define D_extend(a) {memcpy(chptr, a, 12); chptr+=12; sloc+=12, ch_size+=12;\
+                                       if (orgactive) orgaddr+=12;}
+
 // Fill n bytes with zeroes
 #define D_ZEROFILL(n)  {memset(chptr, 0, n); chptr+=n; sloc+=n; ch_size+=n;\
                                                if (orgactive) orgaddr+=n;}
@@ -90,6 +100,12 @@
 #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 {
@@ -113,6 +129,31 @@ SECT {
        CHUNK * sfix;                           // Last fixup chunk
 };
 
+// 680x0 defines
+#define CPU_68000 1
+#define CPU_68020 2
+#define CPU_68030 4
+#define CPU_68040 8
+#define CPU_68060 16
+#define FPU_NONE  0
+#define FPU_68881 1
+#define FPU_68882 2
+#define FPU_68040 4
+#define FPU_68060 8
+
+// Helper macros to test for active CPU
+#define CHECK00 if (activecpu == CPU_68000) return error(unsupport)
+#define CHECK20 if (activecpu == CPU_68020) return error(unsupport)
+#define CHECK30 if (activecpu == CPU_68030) return error(unsupport)
+#define CHECK40 if (activecpu == CPU_68040) return error(unsupport)
+#define CHECK60 if (activecpu == CPU_68060) return error(unsupport)
+#define CHECKNO00 if (activecpu != CPU_68000) return error(unsupport)
+#define CHECKNO20 if (activecpu != CPU_68020) return error(unsupport)
+#define CHECKNO30 if (activecpu != CPU_68030) return error(unsupport)
+#define CHECKNO40 if (activecpu != CPU_68040) return error(unsupport)
+#define CHECKNO60 if (activecpu != CPU_68060) return error(unsupport)
+#define CHECKNOFPU if (!activefpu) return error(unsupport)
+
 // Globals, external etc
 extern uint32_t sloc;
 extern uint16_t scattr;