svn commit: trunk/uClibc/libc/sysdeps/linux/arm: bits
kraj at uclibc.org
kraj at uclibc.org
Sat Oct 7 06:50:45 UTC 2006
Author: kraj
Date: 2006-10-06 23:50:44 -0700 (Fri, 06 Oct 2006)
New Revision: 16334
Log:
Add mmap function needed for ARM EABI and define thumb specific INTERNAL_SYSCALL macro which saves r7 before making the call and pops it back after return.
Modified:
trunk/uClibc/libc/sysdeps/linux/arm/Makefile.arch
trunk/uClibc/libc/sysdeps/linux/arm/bits/syscalls.h
Changeset:
Modified: trunk/uClibc/libc/sysdeps/linux/arm/Makefile.arch
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/arm/Makefile.arch 2006-10-07 06:40:33 UTC (rev 16333)
+++ trunk/uClibc/libc/sysdeps/linux/arm/Makefile.arch 2006-10-07 06:50:44 UTC (rev 16334)
@@ -5,7 +5,7 @@
# Licensed under the LGPL v2.1, see the file COPYING.LIB in this tarball.
#
-CSRC := brk.c ioperm.c iopl.c sigaction.c __syscall_error.c
+CSRC := brk.c ioperm.c iopl.c mmap.c sigaction.c __syscall_error.c
SSRC := \
__longjmp.S vfork.S clone.S setjmp.S bsd-setjmp.S \
Modified: trunk/uClibc/libc/sysdeps/linux/arm/bits/syscalls.h
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/arm/bits/syscalls.h 2006-10-07 06:40:33 UTC (rev 16333)
+++ trunk/uClibc/libc/sysdeps/linux/arm/bits/syscalls.h 2006-10-07 06:50:44 UTC (rev 16334)
@@ -112,6 +112,7 @@
#undef INTERNAL_SYSCALL
#if defined(__ARM_EABI__)
+#if !defined(__thumb__)
#define INTERNAL_SYSCALL(name, err, nr, args...) \
({unsigned int _sys_result; \
{ \
@@ -125,6 +126,28 @@
_sys_result = _a1; \
} \
(int) _sys_result; })
+#else /* !defined(__thumb__) */
+/* So hide the use of r7 from the compiler, this would be a lot
+ * easier but for the fact that the syscalls can exceed 255.
+ * For the moment the LOAD_ARG_7 is sacrificed.
+ */
+#define INTERNAL_SYSCALL(name, err, nr, args...) \
+ ({ unsigned int _sys_result; \
+ { \
+ register int _a1 asm ("a1"); \
+ LOAD_ARGS_##nr (args) \
+ register int _v3 asm ("v3") = (int) (SYS_ify(name)); \
+ asm volatile ("push {r7}\n" \
+ "\tmov r7, v3\n" \
+ "\tswi 0 @ syscall " #name "\n" \
+ "\tpop {r7}" \
+ : "=r" (_a1) \
+ : "r" (_v3) ASM_ARGS_##nr \
+ : "memory"); \
+ _sys_result = _a1; \
+ } \
+ (int) _sys_result; })
+#endif /*!defined(__thumb__)*/
#else /* !defined(__ARM_EABI__) */
#if !defined(__thumb__)
#define INTERNAL_SYSCALL(name, err, nr, args...) \
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