target/arm: Add skeleton for T16 decodetree
Reviewed-by: Philippe Mathieu-Daudé <philmd@redhat.com> Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Message-id: 20190904193059.26202-46-richard.henderson@linaro.org Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
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@ -43,12 +43,18 @@ target/arm/decode-t32.inc.c: $(SRC_PATH)/target/arm/t32.decode $(DECODETREE)
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$(PYTHON) $(DECODETREE) --static-decode disas_t32 -o $@ $<,\
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"GEN", $(TARGET_DIR)$@)
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target/arm/decode-t16.inc.c: $(SRC_PATH)/target/arm/t16.decode $(DECODETREE)
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$(call quiet-command,\
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$(PYTHON) $(DECODETREE) -w 16 --static-decode disas_t16 -o $@ $<,\
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"GEN", $(TARGET_DIR)$@)
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target/arm/translate-sve.o: target/arm/decode-sve.inc.c
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target/arm/translate.o: target/arm/decode-vfp.inc.c
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target/arm/translate.o: target/arm/decode-vfp-uncond.inc.c
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target/arm/translate.o: target/arm/decode-a32.inc.c
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target/arm/translate.o: target/arm/decode-a32-uncond.inc.c
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target/arm/translate.o: target/arm/decode-t32.inc.c
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target/arm/translate.o: target/arm/decode-t16.inc.c
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obj-y += tlb_helper.o debug_helper.o
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obj-y += translate.o op_helper.o
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20
target/arm/t16.decode
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20
target/arm/t16.decode
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@ -0,0 +1,20 @@
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# Thumb1 instructions
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#
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# Copyright (c) 2019 Linaro, Ltd
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#
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# This library is free software; you can redistribute it and/or
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# modify it under the terms of the GNU Lesser General Public
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# License as published by the Free Software Foundation; either
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# version 2 of the License, or (at your option) any later version.
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#
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# This library is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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# Lesser General Public License for more details.
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#
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# You should have received a copy of the GNU Lesser General Public
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# License along with this library; if not, see <http://www.gnu.org/licenses/>.
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#
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# This file is processed by scripts/decodetree.py
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#
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@ -7560,6 +7560,7 @@ static int t32_branch24(DisasContext *s, int x)
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#include "decode-a32.inc.c"
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#include "decode-a32-uncond.inc.c"
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#include "decode-t32.inc.c"
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#include "decode-t16.inc.c"
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/* Helpers to swap operands for reverse-subtract. */
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static void gen_rsb(TCGv_i32 dst, TCGv_i32 a, TCGv_i32 b)
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@ -10669,6 +10670,11 @@ static void disas_thumb_insn(DisasContext *s, uint32_t insn)
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TCGv_i32 tmp2;
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TCGv_i32 addr;
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if (disas_t16(s, insn)) {
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return;
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}
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/* fall back to legacy decoder */
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switch (insn >> 12) {
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case 0: case 1:
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