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62 lines
2.1 KiB
Markdown
62 lines
2.1 KiB
Markdown
# How to update RISCV tables.
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* Checkout LLVM. Patches are tested on commit `b81d715c`.
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```
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git clone https://github.com/llvm/llvm-project.git
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git checkout b81d715c
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```
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* Apply patches from the current directory.
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* Run tablegen.
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```
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cd $LLVM
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mkdir build
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cd build
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cmake -DCMAKE_CXX_FLAGS=-DCAPSTONE -DLLVM_EXPERIMENTAL_TARGETS_TO_BUILD="RISCV" ..
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make RISCVCommonTableGen
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```
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* Copy `.inc` files.
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```
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cp arch/RISCV/RISCVGenInsnNameMaps.inc \
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arch/RISCV/RISCVGenInsnNameMaps.inc.old
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for inc in $(cd arch/RISCV && ls *.inc); do
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cp $LLVM/build/lib/Target/RISCV/$inc arch/RISCV/
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done
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```
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* Fixup `RISCVGenInsnNameMaps.inc`.
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```
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comm -1 -3 \
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<(grep RISCV_INS_ <arch/RISCV/RISCVGenInsnNameMaps.inc.old \
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| sort -u) \
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<(grep RISCV_INS_ <arch/RISCV/RISCVGenInsnNameMaps.inc \
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| sort -u) \
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>arch/RISCV/RISCVGenInsnNameMaps.inc.new
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cat arch/RISCV/RISCVGenInsnNameMaps.inc.old \
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arch/RISCV/RISCVGenInsnNameMaps.inc.new \
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>arch/RISCV/RISCVGenInsnNameMaps.inc
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```
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* Add new groups, insns, registers and formats.
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* `include/capstone/RISCV.h`
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* `enum RISCV_insn`:
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```
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comm -1 -3 \
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<(perl -ne 'if (/(RISCV_INS_.+),/) { print "\t$1,\n" }' \
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<include/capstone/RISCV.h | sort -u) \
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<(perl -ne 'if (/(RISCV_INS_.+),/) { print "\t$1,\n" }' \
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<arch/RISCV/RISCVMappingInsn.inc | sort -u)
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```
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* `enum RISCV_insn_group`:
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```
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perl -ne 'if (/(\{.RISCV_GRP_.*?\}),/) { print "\t$1,\n"; }' < \
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arch/RISCV/RISCVMappingInsn.inc | sort -u
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```
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* `arch/RISCV/RISCVDisassembler.c`
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* `arch/RISCV/RISCVInstPrinter.c`
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* `arch/RISCV/RISCVMCTargetDesc.c`
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* `arch/RISCV/RISCVMCTargetDesc.h`
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* `arch/RISCV/RISCVMapping.c`
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* `enum group_name_maps`:
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```
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perl -ne 'if (/(RISCV_GRP_(.*?)),/) { print "\t{ $1, \"" . lc($2) . "\" },\n"; }' \
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arch/RISCV/RISCVMappingInsn.inc | sort -u
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```
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