[Bug ld/13666] New: gold-linked binary for ppc results in program-termination with illegal instruction
http://sourceware.org/bugzilla/show_bug.cgi?id=13666 Bug #: 13666 Summary: gold-linked binary for ppc results in program-termination with illegal instruction Product: binutils Version: 2.22 Status: NEW Severity: normal Priority: P2 Component: ld AssignedTo: unassig...@sourceware.org ReportedBy: stormtro...@gmx.net Classification: Unclassified I am using gold v1.11 (binutils v2.2) for cross-linking a program for my powerpc architecture (P2020 CPU). When I execute this binary I am getting an Illegal instruction. Readelf delivers a correct fileheader (Machine: PowerPC). Linking with the standard GNU ld creates a runnable binary, but of course needs a lot longer. I compiled gold before for arm. Worked like a charm! -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/13666] gold-linked binary for ppc results in program-termination with illegal instruction
http://sourceware.org/bugzilla/show_bug.cgi?id=13666 --- Comment #1 from stormtroopa at gmx dot net 2012-02-06 16:09:17 UTC --- I just tried to compile a very small test program instead. This one terminates with Segmentation fault -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/13666] gold-linked binary for ppc results in program-termination with illegal instruction
http://sourceware.org/bugzilla/show_bug.cgi?id=13666 --- Comment #2 from stormtroopa at gmx dot net 2012-02-06 16:16:01 UTC --- Debugging the application I can see the callstack. Application is crashing in __libc_csu_init () with SIGSEGV. -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug binutils/13668] New: x86: objdump gets the wrong length for 66-prefixed direct jumps in 64-bit mode
http://sourceware.org/bugzilla/show_bug.cgi?id=13668
Bug #: 13668
Summary: x86: objdump gets the wrong length for 66-prefixed
direct jumps in 64-bit mode
Product: binutils
Version: 2.23 (HEAD)
Status: NEW
Severity: normal
Priority: P2
Component: binutils
AssignedTo: unassig...@sourceware.org
ReportedBy: m...@mythic-beasts.com
Classification: Unclassified
objdump -d produces the following disassembly for x86-64 and shows this jb
as taking a 2-byte jump offset:
400515: 66 0f 82 00 00 jb 51a
40051a: eb 02 jmp40051e
This is correct for 32-bit mode, but in 64-bit mode this jb should take a
4-byte jump offset.
I'm not sure where that CPU behaviour is documented (I find the AMD manuals
unclear on the matter), but the following test demonstrates it empirically:
#include stdio.h
asm(.global test\n
test:\n
/* Clear the carry flag so that the following jc does not jump. */
clc\n
/* 66 0f 82 is the encoding for data16 jc. jc is also known
as jb. On x86-32, this takes a 2-byte operand, so it
executes jmp size2. On x86-64, this takes a 4-byte operand,
so it executes jmp size4. */
.ascii \\\x66\\x0f\\x82\\x00\\x00\\n
/* We assume that this jump is encoded as a 2-byte instruction. */
jmp size2\n
jmp size4\n
size2: jmp size_is_2\n
size4: jmp size_is_4\n
);
void test(void);
void size_is_2() { printf(operand size is 2 bytes\n); }
void size_is_4() { printf(operand size is 4 bytes\n); }
int main() {
test();
return 0;
}
$ gcc test.c -o test -m32 ./test
operand size is 2 bytes
$ gcc test.c -o test -m64 ./test
operand size is 4 bytes
Since using the 66 prefix on direct jumps is not very useful on x86-64 -- it
only increases the size of the encoding -- we wouldn't expect to see it very
often.
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gold-linked binary for ppc results in illegal instruction
I am using gold v1.11 (binutils v2.2) for cross-linking a program for my powerpc architecture. When I execute this binary I am getting an Illegal instruction. Readelf delivers a correct fileheader (Machine: PowerPC). Linking with the standard GNU ld creates a runnable binary, but of course needs a lot longer. I compiled gold before for arm. Worked like a charm! -- Empfehlen Sie GMX DSL Ihren Freunden und Bekannten und wir belohnen Sie mit bis zu 50,- Euro! https://freundschaftswerbung.gmx.de ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug ld/13666] gold-linked binary for ppc results in program-termination with illegal instruction
http://sourceware.org/bugzilla/show_bug.cgi?id=13666 Ian Lance Taylor ian at airs dot com changed: What|Removed |Added Status|NEW |RESOLVED CC||ian at airs dot com Resolution||DUPLICATE --- Comment #3 from Ian Lance Taylor ian at airs dot com 2012-02-07 06:38:53 UTC --- The gold PowerPC support is incomplete. Sorry. *** This bug has been marked as a duplicate of bug 6767 *** -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug gold/6767] program linked with gold seg faults
http://sourceware.org/bugzilla/show_bug.cgi?id=6767 Ian Lance Taylor ian at airs dot com changed: What|Removed |Added CC||stormtroopa at gmx dot net --- Comment #3 from Ian Lance Taylor ian at airs dot com 2012-02-07 06:38:53 UTC --- *** Bug 13666 has been marked as a duplicate of this bug. *** -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
Re: gold-linked binary for ppc results in illegal instruction
Sebastian Klaar skl...@gmx.net writes: I am using gold v1.11 (binutils v2.2) for cross-linking a program for my powerpc architecture. When I execute this binary I am getting an Illegal instruction. Readelf delivers a correct fileheader (Machine: PowerPC). Linking with the standard GNU ld creates a runnable binary, but of course needs a lot longer. I compiled gold before for arm. Worked like a charm! The gold PowerPC support is incomplete. Sorry. Ian ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
[Bug gold/6767] program linked with gold seg faults
http://sourceware.org/bugzilla/show_bug.cgi?id=6767 --- Comment #4 from stormtroopa at gmx dot net 2012-02-07 07:30:49 UTC --- I am very sorry to here that. Are there any plans to fix it? -- Configure bugmail: http://sourceware.org/bugzilla/userprefs.cgi?tab=email --- You are receiving this mail because: --- You are on the CC list for the bug. ___ bug-binutils mailing list bug-binutils@gnu.org https://lists.gnu.org/mailman/listinfo/bug-binutils
