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$NetBSD: patch-bb,v 1.1 2007/03/17 13:44:20 tsutsui Exp $
--- ic/m68k/m68k-insns-auto.sh.orig 2005-03-23 11:09:33.000000000 +0900
+++ ic/m68k/m68k-insns-auto.sh 2007-03-15 01:11:22.000000000 +0900
@@ -51,8 +51,92 @@
_TME_RCSID("\$Id: patch-bb,v 1.1 2007/03/17 13:44:20 tsutsui Exp $");
EOF
-if $header; then :; else
+if $header; then
cat <<EOF
+
+/* following are to fix the movel sp,-(sp) problem (of the value being pushed
+ on the stack being off by four) and to warn if there are other possible
+ problems that haven't been tested */
+
+#define PREDEC_POSTINC_CONCERN ( \\
+ \\
+/* if source and destination register are the same number */ \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,0,3) == \\
+ TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,9,3)) && \\
+ \\
+/* and both are address registers */ \\
+ ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) >= 1) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) <= 6) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) >= 1) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) <= 6) \\
+ ) && \\
+ \\
+/* and there is a predec or postinc in the src, or a predec in dest */ \\
+ ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 3) || \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 4) || \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) == 4) \\
+ ) \\
+ )
+
+
+#define DEST_IS_PREDEC_SRC_IS_REG_BOTH_SP ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) == 4) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 1) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,0,3) == 7) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,9,3) == 7) \\
+ )
+
+/* following modes test ok */
+#define MODE35_MODE24_OR_MODE54 ( \\
+ \\
+/* src/dest mode 3,5 : this is move.l (a5)+,(028,a5) */ \\
+ ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 3) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) == 5) \\
+ ) || \\
+ \\
+/* or src/dest mode 2,4 : this is move.l (a5),-(a5) */ \\
+ ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 2) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) == 4) \\
+ ) || \\
+ \\
+/* or src/dest mode 5,4 : this is move.l (028,a5),-(a5) */ \\
+ ( \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3) == 5) && \\
+ (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3) == 4) \\
+ ) \\
+ )
+
+
+#define PRINT_WEIRD_SRC_DST_REG_MODE(msg) \\
+ printf("%s\nsrc reg: %x src mode: %x dest reg: %x dest mode %x at pc:%x\n", \\
+ msg, \\
+ TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,0,3), \\
+ TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,3), \\
+ TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,9,3), \\
+ TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,6,3), \\
+ ic->tme_m68k_ireg_pc)
+
+
+#define HITRETURN(msg) do { \\
+ printf("%s, pc:0x%08x, insn:0x%08x: please", \\
+ msg, ic->tme_m68k_ireg_pc, TME_M68K_INSN_OPCODE); \\
+ printf(" analyze M68K instruction.\n"); \\
+ printf(" generate test case.\n"); \\
+ printf(" if TME emulation is incorrect, correct problem.\n"); \\
+ printf(" modify source to avoid this message in the future.\n"); \\
+ printf("press any to continue:"); \\
+ (void)getchar(); \\
+ printf("continuing\n"); \\
+} while (0)
+
+EOF
+else
+ cat <<EOF
+#include <stdio.h>
#include "m68k-impl.h"
EOF
@@ -162,16 +246,16 @@
echo ""
echo " if (!TME_M68K_SEQUENCE_RESTARTING) {"
echo " ic->_tme_m68k_ea_function_code = function_code;"
- echo " ic->_tme_m68k_ea_address = ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_dst);"
- echo " ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_dst) += ireg_dst_adjust;"
- echo " }"
- echo " tme_m68k_read_memx${size}(ic);"
- echo " if (!TME_M68K_SEQUENCE_RESTARTING) {"
- echo " ic->_tme_m68k_ea_function_code = function_code;"
echo " ic->_tme_m68k_ea_address = ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_src);"
echo " ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_src) += ireg_src_adjust;"
echo " }"
echo " tme_m68k_read_mem${size}(ic, TME_M68K_IREG_MEMY${size});"
+ echo " if (!TME_M68K_SEQUENCE_RESTARTING) {"
+ echo " ic->_tme_m68k_ea_function_code = function_code;"
+ echo " ic->_tme_m68k_ea_address = ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_dst);"
+ echo " ic->tme_m68k_ireg_uint32(TME_M68K_IREG_A0 + ireg_dst) += ireg_dst_adjust;"
+ echo " }"
+ echo " tme_m68k_read_memx${size}(ic);"
echo " ${dst} = ic->tme_m68k_ireg_memx${size};"
echo " ${src} = ic->tme_m68k_ireg_memy${size};"
;;
@@ -181,6 +265,12 @@
addx|subx)
echo " tme_uint16_t memory;"
echo ""
+ # sanity checks for addx/subx
+ echo " if ((ireg_src == ireg_dst) &&"
+ echo " (TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,3,1) == 1)) {"
+ echo " HITRETURN(\"weird ${name}${size}\");"
+ echo " }"
+ echo ""
echo " memory = (TME_M68K_INSN_OPCODE & TME_BIT(3));"
echo " if (memory) {"
echo " TME_M68K_INSN_CANFAULT;"
@@ -239,6 +329,35 @@
fi
echo ";"
+ # check "moveX sp,-(sp)" and adjust res
+ if test ${name} = move; then
+ echo ""
+ echo " if (PREDEC_POSTINC_CONCERN) {"
+ echo " if (DEST_IS_PREDEC_SRC_IS_REG_BOTH_SP) {"
+ if test ${size} = 8; then
+ echo " printf(\"ERROR: ${name}${size}: how can addr/addr be 8 bits? at pc:%x\\n\","
+ echo " ic->tme_m68k_ireg_pc);"
+ else
+ echo "#if 0"
+ echo " printf(\"${name}${size}: chg predec dest res from:%x to %x for register %d at pc %x\\n\","
+ echo " res, res + (${size} / 8), TME_FIELD_EXTRACTU(TME_M68K_INSN_OPCODE,0,3), ic->tme_m68k_ireg_pc);"
+ echo "#endif"
+ echo " res = res + (${size} / 8);"
+ fi
+ echo " } else if (!(MODE35_MODE24_OR_MODE54)) {"
+ echo " PRINT_WEIRD_SRC_DST_REG_MODE(\"WEIRD: ${name}${size}\");"
+ echo " }"
+ echo " }"
+ fi
+
+ # sanity check for cmpa16
+ if test ${name} = cmpa; then
+ echo ""
+ echo " if PREDEC_POSTINC_CONCERN {"
+ echo " PRINT_WEIRD_SRC_DST_REG_MODE(\"weird ${name}${size}\");"
+ echo " }"
+ fi
+
# store the result:
if $store_res; then
echo ""
@@ -362,6 +481,10 @@
adda) op='+' ; src="_op0" ; dst="_op1" ;;
movea) op='' ; src="_op1" ; dst="_op0" ;;
esac
+ echo " if (PREDEC_POSTINC_CONCERN) {"
+ echo " PRINT_WEIRD_SRC_DST_REG_MODE(\"weird ${name}${size}\");"
+ echo " }"
+ echo ""
echo " *((tme_int32_t *) ${dst}) ${op}= *((tme_int${size}_t *) ${src});"
echo " TME_M68K_INSN_OK;"
echo "}"
@@ -801,6 +924,10 @@
echo " tme_uint16_t specopy = TME_M68K_INSN_OP0(tme_uint16_t);"
echo " tme_uint32_t addrx;"
echo " tme_uint32_t addry;"
+ fi
+ echo ""
+ echo " TME_M68K_INSN_CANFAULT;"
+ if test $name = cas2_; then
echo ""
echo " /* get the function code and addresses we'll be dealing with: */"
echo " ic->_tme_m68k_ea_function_code = TME_M68K_FUNCTION_CODE_DATA(ic);"
|
