- for crossm68k-gcc-2.95.3

[packages/crossm68k-gcc.git] / crossm68k-gcc-zext.patch

diff --git a/crossm68k-gcc-zext.patch b/crossm68k-gcc-zext.patch
new file mode 100644 (file)
index 0000000..ea45875
--- /dev/null
+++ b/crossm68k-gcc-zext.patch
@@ -0,0 +1,49 @@
+#
+# This patch can be found at http://www.uclinux.org/pub/uClinux/m68k-elf-tools/
+#
+diff -Naur gcc-2.95.3.org/gcc/config/m68k/m68k.md gcc-2.95.3/gcc/config/m68k/m68k.md
+--- gcc-2.95.3.org/gcc/config/m68k/m68k.md     Thu Aug  5 16:22:05 1999
++++ gcc-2.95.3/gcc/config/m68k/m68k.md Mon Dec 16 10:37:47 2002
+@@ -1486,10 +1486,40 @@
+ }")
+ 
+ ;; this is the canonical form for (lshiftrt:DI x 32)
+-(define_insn "zero_extendsidi2"
++(define_expand "zero_extendsidi2"
++  [(set (match_operand:DI 0 "nonimmediate_operand" "")
++    (zero_extend:DI (match_operand:SI 1 "general_operand" "")))]
++  ""
++  "")
++
++(define_insn "*zero_extendsidi2_cf"
++  [(set (match_operand:DI 0 "nonimmediate_operand" "=r,m")
++    (zero_extend:DI (match_operand:SI 1 "general_operand" "rm,r")))]
++  "TARGET_5200"
++  "*
++{
++  CC_STATUS_INIT;
++  if (GET_CODE (operands[0]) == REG)
++    operands[2] = gen_rtx_REG (SImode, REGNO (operands[0]) + 1);
++  else if (GET_CODE (XEXP (operands[0], 0)) == PRE_DEC)
++    return \"move%.l %1,%0\;clr%.l %0\";
++  else if (GET_CODE (XEXP (operands[0], 0)) == POST_INC)
++    return \"clr%.l %0\;move%.l %1,%0\";
++  else
++    operands[2] = adj_offsettable_operand (operands[0], 4);
++  if (GET_CODE (operands[1]) != REG || GET_CODE (operands[2]) != REG
++      || REGNO (operands[1]) != REGNO (operands[2]))
++    output_asm_insn (\"move%.l %1,%2\", operands);
++  if (ADDRESS_REG_P (operands[0]))
++    return \"sub%.l %0,%0\";
++  else
++    return \"clr%.l %0\";
++}")
++
++(define_insn "*zero_extendsidi2"
+   [(set (match_operand:DI 0 "general_operand" "rm")
+     (zero_extend:DI (match_operand:SI 1 "general_operand" "rm")))]
+-  ""
++  "!TARGET_5200"
+   "*
+ {
+   CC_STATUS_INIT;