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binutils-gdb
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ubsan: score: left shift of negative value 

* score-dis.c (print_insn_score48): Use unsigned variables for
	unsigned values.  Don't left shift negative values.
	(print_insn_score32): Likewise.
	* score7-dis.c (print_insn_score32, print_insn_score16): Likewise.
This commit is contained in:
Alan Modra 2020-01-13 10:46:55 +10:30
parent b50ef514ff
commit b2c759ce68
3 changed files with 31 additions and 24 deletions
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7
opcodes/ChangeLog
View File

@ -1,3 +1,10 @@
2020-01-13 Alan Modra <amodra@gmail.com>
* score-dis.c (print_insn_score48): Use unsigned variables for
unsigned values. Don't left shift negative values.
(print_insn_score32): Likewise.
* score7-dis.c (print_insn_score32, print_insn_score16): Likewise.
2020-01-13 Alan Modra <amodra@gmail.com>
* tic4x-dis.c (tic4x_print_register): Remove dead code.

20
opcodes/score-dis.c
View File

@ -565,7 +565,7 @@ print_insn_score48 (struct disassemble_info *info, bfd_vma given)
{
case 'r':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
@ -575,7 +575,7 @@ print_insn_score48 (struct disassemble_info *info, bfd_vma given)
break;
case 'd':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
@ -600,14 +600,14 @@ print_insn_score48 (struct disassemble_info *info, bfd_vma given)
|| ((given & insn->mask) == 0x0c00000b) /* stc1 */
|| ((given & insn->mask) == 0x0c000013) /* stc2 */
|| ((given & insn->mask) == 0x0c00001b)) /* stc3 */
reg <<= 2;
reg *= 4;
func (stream, "%ld", reg);
}
break;
case 'x':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
@ -617,7 +617,7 @@ print_insn_score48 (struct disassemble_info *info, bfd_vma given)
break;
case 'w':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
reg <<= 2;
@ -731,7 +731,7 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
}
else
{
long reg;
unsigned long reg;
int bitstart = 10;
int bitend = 14;
reg = given >> bitstart;
@ -784,7 +784,7 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
{
case 'r':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
@ -794,7 +794,7 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
break;
case 'd':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;
@ -817,14 +817,14 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
|| ((given & insn->mask) == 0x0c00000b) /* stc1 */
|| ((given & insn->mask) == 0x0c000013) /* stc2 */
|| ((given & insn->mask) == 0x0c00001b)) /* stc3 */
reg <<= 2;
reg *= 4;
func (stream, "%ld", reg);
}
break;
case 'x':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2u << (bitend - bitstart)) - 1;

28
opcodes/score7-dis.c
View File

@ -613,20 +613,20 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
{
case 'r':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
reg &= (2u << (bitend - bitstart)) - 1;
func (stream, "%s", score_regnames[reg]);
}
break;
case 'd':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
reg &= (2u << (bitend - bitstart)) - 1;
func (stream, "%ld", reg);
}
@ -636,9 +636,9 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
long reg;
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
reg = ((reg ^ (1 << (bitend - bitstart))) -
(1 << (bitend - bitstart)));
reg &= (2u << (bitend - bitstart)) - 1;
reg = ((reg ^ (1 << (bitend - bitstart)))
- (1 << (bitend - bitstart)));
if (((given & insn->mask) == 0x0c00000a) /* ldc1 */
|| ((given & insn->mask) == 0x0c000012) /* ldc2 */
@ -646,17 +646,17 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
|| ((given & insn->mask) == 0x0c00000b) /* stc1 */
|| ((given & insn->mask) == 0x0c000013) /* stc2 */
|| ((given & insn->mask) == 0x0c00001b)) /* stc3 */
reg <<= 2;
reg *= 4;
func (stream, "%ld", reg);
}
break;
case 'x':
{
long reg;
unsigned long reg;
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
reg &= (2u << (bitend - bitstart)) - 1;
func (stream, "%lx", reg);
}
@ -667,12 +667,12 @@ print_insn_score32 (bfd_vma pc, struct disassemble_info *info, long given)
break;
case '`':
c++;
if ((given & (1 << bitstart)) == 0)
if ((given & (1u << bitstart)) == 0)
func (stream, "%c", *c);
break;
case '\'':
c++;
if ((given & (1 << bitstart)) != 0)
if ((given & (1u << bitstart)) != 0)
func (stream, "%c", *c);
break;
default:
@ -789,7 +789,7 @@ print_insn_score16 (bfd_vma pc, struct disassemble_info *info, long given)
if (!bitend)
abort ();
reg = given >> bitstart;
reg &= (2 << (bitend - bitstart)) - 1;
reg &= (2u << (bitend - bitstart)) - 1;
switch (*c)
{
case 'R':
@ -835,7 +835,7 @@ print_insn_score16 (bfd_vma pc, struct disassemble_info *info, long given)
case '\'':
c++;
if ((given & (1 << bitstart)) != 0)
if ((given & (1u << bitstart)) != 0)
func (stream, "%c", *c);
break;
default: