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authorSergey Bugaev <bugaevc@gmail.com>2023-02-12 14:10:42 +0300
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2023-02-12 16:35:03 +0100
commitd08ae9c3fbf583508c300c7fa59ce6a05a8a47b6 (patch)
treec4bb6fe97c3d80fb914bcc4a4b78a26e67f025e0 /sysdeps/mach/hurd
parent8420b3e832473503f11600fcccd374914d2c4b61 (diff)
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hurd, htl: Add some x86_64-specific code
Signed-off-by: Sergey Bugaev <bugaevc@gmail.com> Message-Id: <20230212111044.610942-12-bugaevc@gmail.com>
Diffstat (limited to 'sysdeps/mach/hurd')
-rw-r--r--sysdeps/mach/hurd/x86_64/static-start.S27
-rw-r--r--sysdeps/mach/hurd/x86_64/tlsdesc.sym22
2 files changed, 49 insertions, 0 deletions
diff --git a/sysdeps/mach/hurd/x86_64/static-start.S b/sysdeps/mach/hurd/x86_64/static-start.S
new file mode 100644
index 0000000000..982d3d52e4
--- /dev/null
+++ b/sysdeps/mach/hurd/x86_64/static-start.S
@@ -0,0 +1,27 @@
+/* Startup code for statically linked Hurd/x86_64 binaries.
+ Copyright (C) 1998-2023 Free Software Foundation, Inc.
+ This file is part of the GNU C Library.
+
+ The GNU C Library is free software; you can redistribute it and/or
+ modify it under the terms of the GNU Lesser General Public
+ License as published by the Free Software Foundation; either
+ version 2.1 of the License, or (at your option) any later version.
+
+ The GNU C Library is distributed in the hope that it will be useful,
+ but WITHOUT ANY WARRANTY; without even the implied warranty of
+ MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ Lesser General Public License for more details.
+
+ You should have received a copy of the GNU Lesser General Public
+ License along with the GNU C Library; if not, see
+ <https://www.gnu.org/licenses/>. */
+
+ .text
+ .globl _start
+_start:
+ call _hurd_stack_setup
+ xorq %rdx, %rdx
+ jmp _start1
+
+#define _start _start1
+#include <sysdeps/x86_64/start.S>
diff --git a/sysdeps/mach/hurd/x86_64/tlsdesc.sym b/sysdeps/mach/hurd/x86_64/tlsdesc.sym
new file mode 100644
index 0000000000..da3b96c1cc
--- /dev/null
+++ b/sysdeps/mach/hurd/x86_64/tlsdesc.sym
@@ -0,0 +1,22 @@
+#include <stddef.h>
+#include <sysdep.h>
+#include <tls.h>
+#include <link.h>
+#include <dl-tlsdesc.h>
+
+--
+
+-- We have to override sysdeps/x86_64/tlsdesc.sym to adapt to our libpthread.
+
+-- Abuse tls.h macros to derive offsets relative to the thread register.
+
+DTV_OFFSET offsetof(tcbhead_t, dtv)
+
+TLSDESC_ARG offsetof(struct tlsdesc, arg)
+
+TLSDESC_GEN_COUNT offsetof(struct tlsdesc_dynamic_arg, gen_count)
+TLSDESC_MODID offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_module)
+TLSDESC_MODOFF offsetof(struct tlsdesc_dynamic_arg, tlsinfo.ti_offset)
+
+TI_MODULE_OFFSET offsetof(tls_index, ti_module)
+TI_OFFSET_OFFSET offsetof(tls_index, ti_offset)