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From: "ro at CeBiTec dot Uni-Bielefeld.DE" <gcc-bugzilla@gcc.gnu.org> To: gcc-bugs@gcc.gnu.org Subject: [Bug target/102772] [12 regression] g++.dg/torture/pr80334.C FAILs Date: Fri, 25 Mar 2022 12:48:26 +0000 [thread overview] Message-ID: <bug-102772-4-1xx5fnoSME@http.gcc.gnu.org/bugzilla/> (raw) In-Reply-To: <bug-102772-4@http.gcc.gnu.org/bugzilla/> https://gcc.gnu.org/bugzilla/show_bug.cgi?id=102772 --- Comment #21 from ro at CeBiTec dot Uni-Bielefeld.DE <ro at CeBiTec dot Uni-Bielefeld.DE> --- > --- Comment #19 from Jakub Jelinek <jakub at gcc dot gnu.org> --- > If it is the linker, you can always objdump -dr the binary to see what is in > there after linking. s@ntpoff in my understanding is a relocation that should > supply at link time the offset from the TLS base and at least on the GCC side > it can appear anywhere where 32-bit immediate appears in an instruction (or in > data section too), not necessarily in addl imm, %eax instruction. The linker isn't a factor here: both ld and gld 2.38 produce the same result: 08048890 <_Z3foov>: 8048890: 65 a1 00 00 00 00 mov %gs:0x0,%eax 8048896: 05 d0 ff ff ff add $0xffffffd0,%eax 804889b: c3 ret > Perhaps also try to have 2 different functions, one with > movl %gs:0, %eax > addl $s@ntpoff, %eax > ret > and another with > pushl %ebx > movl %gs:0, %ebx > addl $s@ntpoff, %ebx > popl %ebx > ret > and see what they do at runtime (if they both print the same address in each > thread or not). They don't at all: I've also added in the thread id. I get foo foob $ ./ta48-ebx id = 3 fdf80a90 8066638 [...] id = 1 fe682a90 0 id = 46 fbf66290 8067b0c [...] id = 41 fbf63a90 80678a0 All other threads are similarly off: not 16-byte aligned and completely different from the %eax results. To verify, I've run the test under dbx (gdb currently lacks TLS support on Solaris) and print &s in the initial thread: the result matches the foo value above for id = 1, which suggests they are consistent.
next prev parent reply other threads:[~2022-03-25 12:48 UTC|newest] Thread overview: 55+ messages / expand[flat|nested] mbox.gz Atom feed top 2021-10-15 11:39 [Bug target/102772] New: " ro at gcc dot gnu.org 2021-10-15 11:40 ` [Bug target/102772] " ro at gcc dot gnu.org 2021-10-15 11:40 ` ro at gcc dot gnu.org 2021-10-15 11:40 ` ro at gcc dot gnu.org 2021-10-15 12:06 ` hjl.tools at gmail dot com 2021-10-15 13:02 ` rguenth at gcc dot gnu.org 2021-10-15 14:29 ` ro at CeBiTec dot Uni-Bielefeld.DE 2021-10-15 20:44 ` hjl.tools at gmail dot com 2021-11-16 11:51 ` jakub at gcc dot gnu.org 2021-11-23 12:36 ` ro at gcc dot gnu.org 2022-03-17 15:05 ` jakub at gcc dot gnu.org 2022-03-17 15:14 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-21 11:44 ` jakub at gcc dot gnu.org 2022-03-21 12:01 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-21 12:03 ` ro at gcc dot gnu.org 2022-03-21 12:03 ` ro at gcc dot gnu.org 2022-03-21 13:17 ` jakub at gcc dot gnu.org 2022-03-21 13:31 ` jakub at gcc dot gnu.org 2022-03-22 15:12 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-22 17:00 ` jakub at gcc dot gnu.org 2022-03-23 13:56 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-23 14:11 ` jakub at gcc dot gnu.org 2022-03-23 14:17 ` jakub at gcc dot gnu.org 2022-03-25 12:48 ` ro at CeBiTec dot Uni-Bielefeld.DE [this message] 2022-03-25 12:53 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-25 12:54 ` jakub at gcc dot gnu.org 2022-03-25 13:00 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-25 13:06 ` jakub at gcc dot gnu.org 2022-03-25 13:13 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-25 13:18 ` jakub at gcc dot gnu.org 2022-03-25 13:22 ` ro at gcc dot gnu.org 2022-03-25 13:49 ` jakub at gcc dot gnu.org 2022-03-30 14:06 ` cvs-commit at gcc dot gnu.org 2022-03-30 14:45 ` jakub at gcc dot gnu.org 2022-03-30 14:52 ` redi at gcc dot gnu.org 2022-03-30 14:56 ` redi at gcc dot gnu.org 2022-03-30 15:04 ` redi at gcc dot gnu.org 2022-03-30 15:13 ` redi at gcc dot gnu.org 2022-03-30 15:23 ` jakub at gcc dot gnu.org 2022-03-31 13:46 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-03-31 13:47 ` ro at gcc dot gnu.org 2022-03-31 14:16 ` redi at gcc dot gnu.org 2022-03-31 14:18 ` redi at gcc dot gnu.org 2022-03-31 14:49 ` jakub at gcc dot gnu.org 2022-03-31 15:15 ` redi at gcc dot gnu.org 2022-03-31 15:47 ` jakub at gcc dot gnu.org 2022-04-04 11:54 ` jakub at gcc dot gnu.org 2022-04-11 9:13 ` jakub at gcc dot gnu.org 2022-04-11 14:19 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-04-11 14:19 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-04-11 15:29 ` jakub at gcc dot gnu.org 2022-04-12 7:53 ` jakub at gcc dot gnu.org 2022-04-13 14:47 ` ro at CeBiTec dot Uni-Bielefeld.DE 2022-05-06 8:31 ` [Bug target/102772] [12/13 " jakub at gcc dot gnu.org 2023-05-08 12:22 ` [Bug target/102772] [12/13/14 " rguenth at gcc dot gnu.org
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