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* [Bug string/31266] New: sparc: string/tst-memmove-overflow fails on 32-bit sparcv9
@ 2024-01-18 15:28 adhemerval.zanella at linaro dot org
2024-01-19 5:29 ` [Bug string/31266] " sam at gentoo dot org
2024-01-22 13:02 ` adhemerval.zanella at linaro dot org
0 siblings, 2 replies; 3+ messages in thread
From: adhemerval.zanella at linaro dot org @ 2024-01-18 15:28 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31266
Bug ID: 31266
Summary: sparc: string/tst-memmove-overflow fails on 32-bit
sparcv9
Product: glibc
Version: 2.27
Status: NEW
Severity: normal
Priority: P2
Component: string
Assignee: unassigned at sourceware dot org
Reporter: adhemerval.zanella at linaro dot org
Target Milestone: ---
The sparcv9 uses the generic sparc64 sysdeps/sparc/sparc64/memmove.S
implementation and the initial size test is done with a signed comparison:
ENTRY(memmove)
mov %o0, %g2 /* Save pointer to destination */
cmp %o1, %o0 /* if from address is >= to use forward copy
*/
bgeu,a %XCC, 2f /* else use backward if ... */
cmp %o2, 17 /* delay slot, for small counts copy bytes */
sub %o0, %o1, %o4 /* get difference of two addresses */
cmp %o2, %o4 /* compare size and difference of addresses */
bgu %XCC, .Lovbc /* if size is bigger, have to do overlapped
copy */
cmp %o2, 17 /* delay slot, for small counts copy bytes */
/*
* normal, copy forwards
*/
2: ble %XCC, .Ldbytecp
andcc %o1, 3, %o5 /* is src word aligned */
Where it should be a 'bleu' due the buffer length being a size_t.
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* [Bug string/31266] sparc: string/tst-memmove-overflow fails on 32-bit sparcv9
2024-01-18 15:28 [Bug string/31266] New: sparc: string/tst-memmove-overflow fails on 32-bit sparcv9 adhemerval.zanella at linaro dot org
@ 2024-01-19 5:29 ` sam at gentoo dot org
2024-01-22 13:02 ` adhemerval.zanella at linaro dot org
1 sibling, 0 replies; 3+ messages in thread
From: sam at gentoo dot org @ 2024-01-19 5:29 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31266
Sam James <sam at gentoo dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
CC| |sam at gentoo dot org
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* [Bug string/31266] sparc: string/tst-memmove-overflow fails on 32-bit sparcv9
2024-01-18 15:28 [Bug string/31266] New: sparc: string/tst-memmove-overflow fails on 32-bit sparcv9 adhemerval.zanella at linaro dot org
2024-01-19 5:29 ` [Bug string/31266] " sam at gentoo dot org
@ 2024-01-22 13:02 ` adhemerval.zanella at linaro dot org
1 sibling, 0 replies; 3+ messages in thread
From: adhemerval.zanella at linaro dot org @ 2024-01-22 13:02 UTC (permalink / raw)
To: glibc-bugs
https://sourceware.org/bugzilla/show_bug.cgi?id=31266
Adhemerval Zanella <adhemerval.zanella at linaro dot org> changed:
What |Removed |Added
----------------------------------------------------------------------------
Resolution|--- |FIXED
Status|NEW |RESOLVED
Target Milestone|--- |2.39
--- Comment #1 from Adhemerval Zanella <adhemerval.zanella at linaro dot org> ---
Fixed on 2.39.
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2024-01-18 15:28 [Bug string/31266] New: sparc: string/tst-memmove-overflow fails on 32-bit sparcv9 adhemerval.zanella at linaro dot org
2024-01-19 5:29 ` [Bug string/31266] " sam at gentoo dot org
2024-01-22 13:02 ` adhemerval.zanella at linaro dot org
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