svn commit: r355047 - head/libexec/rtld-elf/powerpc
Brandon Bergren
bdragon at FreeBSD.org
Sun Nov 24 06:43:04 UTC 2019
Author: bdragon
Date: Sun Nov 24 06:43:03 2019
New Revision: 355047
URL: https://svnweb.freebsd.org/changeset/base/355047
Log:
[PowerPC] Fix stack padding issue on ppc32.
Four bytes of padding are needed in the regular powerpc case to bring the
stack frame size up to a multiple of 16 bytes to meet ABI requirements.
Fixes odd hangs I was encountering during testing.
Modified:
head/libexec/rtld-elf/powerpc/rtld_start.S
Modified: head/libexec/rtld-elf/powerpc/rtld_start.S
==============================================================================
--- head/libexec/rtld-elf/powerpc/rtld_start.S Sun Nov 24 05:37:28 2019 (r355046)
+++ head/libexec/rtld-elf/powerpc/rtld_start.S Sun Nov 24 06:43:03 2019 (r355047)
@@ -111,7 +111,7 @@ _ENTRY(.rtld_start)
/* stack space for 30 GPRs + lr/cr */
#define NREGS 30
#define GPRWIDTH 4
-#define FUDGE 0
+#define FUDGE 4
#endif
/* Stack frame needs the 12-byte ABI frame plus fudge factor. */
#define STACK_SIZE (NREGS * GPRWIDTH + 4 * 2 + 12 + FUDGE)
More information about the svn-src-all
mailing list