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authorMike Frysinger <vapier@gentoo.org>2006-06-07 14:29:19 +0000
committerMike Frysinger <vapier@gentoo.org>2006-06-07 14:29:19 +0000
commit798c6a3bddbf197712bd4b7d54ea01933cb669ef (patch)
tree223432385f8e5431f00f4553f5fa81d3db1a3fa4 /libc/sysdeps/linux/m68k
parent93d19e64b6cbce2e865191bbd53deac26978242b (diff)
Richard Sandiford writes:
m68k uClinux doesn't use the normal ELF entry point interface. This patch adjusts crt1.S accordingly. I've followed the ARM example and keyed the choice of interface on __ARCH_USE_MMU__.
Diffstat (limited to 'libc/sysdeps/linux/m68k')
-rw-r--r--libc/sysdeps/linux/m68k/crt1.S15
1 files changed, 15 insertions, 0 deletions
diff --git a/libc/sysdeps/linux/m68k/crt1.S b/libc/sysdeps/linux/m68k/crt1.S
index ee25e48eb..9ce14e594 100644
--- a/libc/sysdeps/linux/m68k/crt1.S
+++ b/libc/sysdeps/linux/m68k/crt1.S
@@ -51,6 +51,13 @@
(4*(argc+1))(%sp) envp[0]
...
NULL
+
+ The uclinux conventions are different. %a1 is not defined on entry
+ and the stack is laid out as follows:
+
+ 0(%sp) argc
+ 4(%sp) argv
+ 8(%sp) envp
*/
#include <features.h>
@@ -73,15 +80,23 @@ _start:
arguments for `main': argc, argv. envp will be determined
later in __libc_start_main. */
move.l (%sp)+, %d0 /* Pop the argument count. */
+#ifndef __ARCH_USE_MMU__
+ move.l (%sp)+, %a0
+#else
move.l %sp, %a0 /* The argument vector starts just at the
current stack top. */
+#endif
/* Provide the highest stack address to the user code (for stacks
which grow downward). */
pea (%sp)
+#ifndef __ARCH_USE_MMU__
+ clr.l -(%sp)
+#else
pea (%a1) /* Push address of the shared library
termination function. */
+#endif
/* Push the address of our own entry points to `.fini' and
`.init'. */