+/* Floating point library in optimized assembly for 8051
+ * Copyright (c) 2004, Paul Stoffregen, paul@pjrc.com
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU Library General Public License
+ * as published by the Free Software Foundation; either version 2
+ * of the License, or (at your option) any later version.
+ *
+ * This library is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
+ */
+
+
+
#define SDCC_FLOAT_LIB
#include <float.h>
+#ifdef FLOAT_ASM_MCS51
-
-static void dummy(void) _naked
+static void dummy(void) __naked
{
// arg1: passed in a,b,dph,dpl
// arg2: passed on stack
- _asm
+ __asm
.globl fsgetargs
fsgetargs:
// extract the two inputs, placing them into:
mov exp_b, a
mov r7, b
ret
- _endasm;
-}
-
-
-
-
-
-#if 0
-// This old version was designed before the change to make all this
-// code fully reentrant. What a mess the 2nd parameter turns out to
-// be.
-
-void __fsgetargs (float a, float b)
-{
- a; // passed in a,b,dph,dpl
- b; // ___fsadd_PARM_2
-
- _asm
- // extract the two inputs, placing them into:
- // sign exponent mantiassa
- // ---- -------- ---------
- // a: sign_a exp_a r4/r3/r2
- // b: sign_b exp_b r7/r6/r5
- //
- mov r2, dpl
- mov r3, dph
- mov c, b.7
- rlc a
- mov sign_a, c
- jz 00001$
- setb b.7
-00001$:
- mov exp_a, a
- mov r4, b
-#ifdef SDCC_MODEL_SMALL
- mov r5, (___fsadd_PARM_2 + 0)
- mov r6, (___fsadd_PARM_2 + 1)
- mov b, (___fsadd_PARM_2 + 2)
- mov a, (___fsadd_PARM_2 + 3)
- mov c, b.7
- rlc a
- mov sign_b, c
- jz 00002$
- setb b.7
-00002$:
- mov exp_b, a
- mov r7, b
-#endif
- _endasm;
+ __endasm;
}
-
-#ifdef SDCC_MODEL_LARGE
-void __fsgetarglarge2 (void)
-{
- _asm
- movx a, @dptr
- mov r5, a
- inc dptr
- movx a, @dptr
- mov r6, a
- inc dptr
- movx a, @dptr
- mov b, a
- inc dptr
- movx a, @dptr
- mov c, b.7
- rlc a
- mov sign_b, c
- jz 00002$
- setb b.7
-00002$:
- mov exp_b, a
- mov r7, b
- _endasm;
-}
#endif
-
-#endif
-