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authorRichard Henderson <richard.henderson@linaro.org>2019-04-25 10:26:36 -0700
committerPalmer Dabbelt <palmer@sifive.com>2019-05-24 12:09:25 -0700
commit4cc16b3b9282e04fab8e84d136540757e82af019 (patch)
treea6caaae619e90e0d1bd36105f1fb986847435c53 /target/riscv/insn16-64.decode
parente06431108b0b1ef6ca76398d2b0b792ea24ae6bc (diff)
target/riscv: Add checks for several RVC reserved operands
C.ADDI16SP, C.LWSP, C.JR, C.ADDIW, C.LDSP all have reserved operands that were not diagnosed. Signed-off-by: Richard Henderson <richard.henderson@linaro.org> Reviewed-by: Palmer Dabbelt <palmer@sifive.com> Signed-off-by: Palmer Dabbelt <palmer@sifive.com>
Diffstat (limited to 'target/riscv/insn16-64.decode')
-rw-r--r--target/riscv/insn16-64.decode10
1 files changed, 8 insertions, 2 deletions
diff --git a/target/riscv/insn16-64.decode b/target/riscv/insn16-64.decode
index 055859d29f..672e1e916f 100644
--- a/target/riscv/insn16-64.decode
+++ b/target/riscv/insn16-64.decode
@@ -21,10 +21,16 @@ ld 011 ... ... .. ... 00 @cl_d
sd 111 ... ... .. ... 00 @cs_d
# *** RV64C Standard Extension (Quadrant 1) ***
-addiw 001 . ..... ..... 01 @ci
+{
+ illegal 001 - 00000 ----- 01 # c.addiw, RES rd=0
+ addiw 001 . ..... ..... 01 @ci
+}
subw 100 1 11 ... 00 ... 01 @cs_2
addw 100 1 11 ... 01 ... 01 @cs_2
# *** RV64C Standard Extension (Quadrant 2) ***
-ld 011 . ..... ..... 10 @c_ldsp
+{
+ illegal 011 - 00000 ----- 10 # c.ldsp, RES rd=0
+ ld 011 . ..... ..... 10 @c_ldsp
+}
sd 111 . ..... ..... 10 @c_sdsp