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authorAlan Modra <amodra@gmail.com>2020-09-01 07:48:02 +0930
committerAlan Modra <amodra@gmail.com>2020-09-01 16:03:08 +0930
commit8dbe96f07060bc41499557d2837afbfffa1aa7fc (patch)
tree236d23173e050e2ccc00e8456d9de5f2b63ec759 /opcodes
parent821e059c2626fb0b2ee91898b1c74ea9636c6175 (diff)
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mep: ubsan: mep-ibld.c:1635,1645,1652 left shift of negative value
cpu/ * mep-core.cpu (f-8s8a2, f-12s4a2, f-17s16a2): Multiply signed value by two rather than shifting left. (f-24s5a2n): Similarly multiply signed f-24s5a2n-hi to extract. opcodes/ * mep-ibld.c: Regenerate.
Diffstat (limited to 'opcodes')
-rw-r--r--opcodes/ChangeLog4
-rw-r--r--opcodes/mep-ibld.c10
2 files changed, 9 insertions, 5 deletions
diff --git a/opcodes/ChangeLog b/opcodes/ChangeLog
index 20e7ec3..719cf05 100644
--- a/opcodes/ChangeLog
+++ b/opcodes/ChangeLog
@@ -1,3 +1,7 @@
+2020-09-01 Alan Modra <amodra@gmail.com>
+
+ * mep-ibld.c: Regenerate.
+
2020-08-31 Cooper Qu <cooper.qu@linux.alibaba.com>
* csky-dis.c (csky_output_operand): Assign dis_info.value for
diff --git a/opcodes/mep-ibld.c b/opcodes/mep-ibld.c
index 3de7ade..8f03813 100644
--- a/opcodes/mep-ibld.c
+++ b/opcodes/mep-ibld.c
@@ -1624,7 +1624,7 @@ mep_cgen_extract_operand (CGEN_CPU_DESC cd,
{
long value;
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 4, 11, 32, total_length, pc, & value);
- value = ((((value) << (1))) + (pc));
+ value = ((((value) * (2))) + (pc));
fields->f_12s4a2 = value;
}
break;
@@ -1632,7 +1632,7 @@ mep_cgen_extract_operand (CGEN_CPU_DESC cd,
{
long value;
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 16, 16, 32, total_length, pc, & value);
- value = ((((value) << (1))) + (pc));
+ value = ((((value) * (2))) + (pc));
fields->f_17s16a2 = value;
}
break;
@@ -1642,14 +1642,14 @@ mep_cgen_extract_operand (CGEN_CPU_DESC cd,
if (length <= 0) break;
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_PCREL_ADDR), 0, 5, 7, 32, total_length, pc, & fields->f_24s5a2n_lo);
if (length <= 0) break;
- FLD (f_24s5a2n) = ((((((FLD (f_24s5a2n_hi)) << (8))) | (((FLD (f_24s5a2n_lo)) << (1))))) + (pc));
+ FLD (f_24s5a2n) = ((((((FLD (f_24s5a2n_hi)) * (256))) | (((FLD (f_24s5a2n_lo)) << (1))))) + (pc));
}
break;
case MEP_OPERAND_PCREL8A2 :
{
long value;
length = extract_normal (cd, ex_info, insn_value, 0|(1<<CGEN_IFLD_SIGNED)|(1<<CGEN_IFLD_PCREL_ADDR), 0, 8, 7, 32, total_length, pc, & value);
- value = ((((value) << (1))) + (pc));
+ value = ((((value) * (2))) + (pc));
fields->f_8s8a2 = value;
}
break;
@@ -1765,7 +1765,7 @@ mep_cgen_extract_operand (CGEN_CPU_DESC cd,
{
long value;
length = extract_normal (cd, ex_info, insn_value, 0, 0, 9, 6, 32, total_length, pc, & value);
- value = ((value) << (1));
+ value = ((value) * (2));
fields->f_7u9a2 = value;
}
break;