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authorSergey Bugaev <bugaevc@gmail.com>2023-04-13 14:58:12 +0300
committerSamuel Thibault <samuel.thibault@ens-lyon.org>2023-04-14 10:31:22 +0000
commitba00d787f3469b02032766b074d4df9071fa7e24 (patch)
tree2686e3886f3ade9e279c7e3cdc66192b79d4576e /sysdeps/mach/sysdep.h
parent05fe3ecffff485032e904f0a3ea709e24d9188eb (diff)
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hurd: Remove __hurd_local_reply_port
Now that the signal code no longer accesses it, the only real user of it
was mig-reply.c, so move the logic for managing the port there.

If we're in SHARED and outside of rtld, we know that __LIBC_NO_TLS ()
always evaluates to 0, and a TLS reply port will always be used, not
__hurd_reply_port0. Still, the compiler does not see that
__hurd_reply_port0 is never used due to its address being taken. To deal
with this, explicitly compile out __hurd_reply_port0 when we know we
won't use it.

Also, instead of accessing the port via THREAD_SELF->reply_port, this
uses THREAD_GETMEM and THREAD_SETMEM directly, avoiding possible
miscompilations.

Signed-off-by: Sergey Bugaev <bugaevc@gmail.com>
Diffstat (limited to 'sysdeps/mach/sysdep.h')
-rw-r--r--sysdeps/mach/sysdep.h2
1 files changed, 1 insertions, 1 deletions
diff --git a/sysdeps/mach/sysdep.h b/sysdeps/mach/sysdep.h
index 1c869f5cb2..35ad1e3920 100644
--- a/sysdeps/mach/sysdep.h
+++ b/sysdeps/mach/sysdep.h
@@ -45,7 +45,7 @@
 
 #ifndef __ASSEMBLER__
 #define FATAL_PREPARE_INCLUDE <mach/mig_support.h>
-#define FATAL_PREPARE __mig_dealloc_reply_port (MACH_PORT_NULL)
+#define FATAL_PREPARE __mig_dealloc_reply_port (__mig_get_reply_port ())
 #endif
 
 /* sysdeps/mach/MACHINE/sysdep.h should define the following macros.  */