Require little-endian host

[riscv-isa-sim.git] / riscv / decode.h

diff --git a/riscv/decode.h b/riscv/decode.h
index f4d6b6ccddb8737a40cbcf64ec8445e5b3a45c83..061b5b6249271152537fc2a4d299e17b5523c8a0 100644 (file)
--- a/riscv/decode.h
+++ b/riscv/decode.h
@@ -7,6 +7,10 @@
 # error spike requires a two''s-complement c++ implementation
 #endif
 
+#ifdef WORDS_BIGENDIAN
+# error spike requires a little-endian host
+#endif
+
 #include <cstdint>
 #include <string.h>
 #include <strings.h>
@@ -184,7 +188,10 @@ private:
 #define require_fp require((STATE.mstatus & MSTATUS_FS) != 0)
 #define require_accelerator require((STATE.mstatus & MSTATUS_XS) != 0)
 
-#define set_fp_exceptions ({ STATE.fflags |= softfloat_exceptionFlags; \
+#define set_fp_exceptions ({ if (softfloat_exceptionFlags) { \
+                               dirty_fp_state; \
+                               STATE.fflags |= softfloat_exceptionFlags; \
+                             } \
                              softfloat_exceptionFlags = 0; })
 
 #define sext32(x) ((sreg_t)(int32_t)(x))
@@ -199,9 +206,10 @@ private:
      } while(0)
 
 #define set_pc_and_serialize(x) \
-  do { set_pc(x); /* check alignment */ \
+  do { reg_t __npc = (x); \
+       set_pc(__npc); /* check alignment */ \
        npc = PC_SERIALIZE_AFTER; \
-       STATE.pc = (x); \
+       STATE.pc = __npc; \
      } while(0)
 
 /* Sentinel PC values to serialize simulator pipeline */
@@ -222,4 +230,17 @@ private:
     throw trap_illegal_instruction(); \
   (which); })
 
+#define DEBUG_START             0x100
+#define DEBUG_ROM_START         0x800
+#define DEBUG_ROM_RESUME        (DEBUG_ROM_START + 4)
+#define DEBUG_ROM_EXCEPTION     (DEBUG_ROM_START + 8)
+#define DEBUG_ROM_END           (DEBUG_ROM_START + debug_rom_raw_len)
+#define DEBUG_RAM_START         0x400
+#define DEBUG_RAM_SIZE          64
+#define DEBUG_RAM_END           (DEBUG_RAM_START + DEBUG_RAM_SIZE)
+#define DEBUG_END               0xfff
+#define DEBUG_CLEARDEBINT       0x100
+#define DEBUG_SETHALTNOT        0x10c
+#define DEBUG_SIZE              (DEBUG_END - DEBUG_START + 1)
+
 #endif