svn commit: trunk/uClibc/libc/sysdeps/linux/bfin: bits
vapier at uclibc.org
vapier at uclibc.org
Sat Sep 15 11:02:37 UTC 2007
Author: vapier
Date: 2007-09-15 04:02:36 -0700 (Sat, 15 Sep 2007)
New Revision: 19848
Log:
use gcc input constraints to avoid often duplicated reloads when making syscalls
Modified:
trunk/uClibc/libc/sysdeps/linux/bfin/__longjmp.S
trunk/uClibc/libc/sysdeps/linux/bfin/bits/syscalls.h
trunk/uClibc/libc/sysdeps/linux/bfin/brk.c
trunk/uClibc/libc/sysdeps/linux/bfin/clone.c
Changeset:
Modified: trunk/uClibc/libc/sysdeps/linux/bfin/__longjmp.S
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/bfin/__longjmp.S 2007-09-15 10:57:09 UTC (rev 19847)
+++ trunk/uClibc/libc/sysdeps/linux/bfin/__longjmp.S 2007-09-15 11:02:36 UTC (rev 19848)
@@ -98,9 +98,9 @@
P0 = [SP++];
CC = R0 == 0;
- IF !CC JUMP finished;
+ IF !CC JUMP .Lfinished;
R0 = 1;
-finished:
+.Lfinished:
RTS;
.size ___longjmp,.-___longjmp
Modified: trunk/uClibc/libc/sysdeps/linux/bfin/bits/syscalls.h
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/bfin/bits/syscalls.h 2007-09-15 10:57:09 UTC (rev 19847)
+++ trunk/uClibc/libc/sysdeps/linux/bfin/bits/syscalls.h 2007-09-15 11:02:36 UTC (rev 19848)
@@ -39,12 +39,10 @@
type name(void) { \
long __res; \
__asm__ __volatile__ ( \
- "p0 = %1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name) \
- : "memory","CC","R0","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -52,14 +50,11 @@
type name(type1 arg1) { \
long __res; \
__asm__ __volatile__ ( \
- "r0=%2;\n\t" \
- "p0=%1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)) \
- : "memory","CC","R0","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -67,16 +62,13 @@
type name(type1 arg1,type2 arg2) { \
long __res; \
__asm__ __volatile__ ( \
- "r1=%3;\n\t" \
- "r0=%2;\n\t" \
- "p0=%1;\n\t" \
"excpt 0;\n\t" \
"%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)), \
- "rm" ((long)(arg2)) \
- : "memory","CC","R0","R1","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)), \
+ "q1" ((long)(arg2)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -84,18 +76,13 @@
type name(type1 arg1,type2 arg2,type3 arg3) { \
long __res; \
__asm__ __volatile__ ( \
- "r2=%4;\n\t" \
- "r1=%3;\n\t" \
- "r0=%2;\n\t" \
- "p0=%1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)), \
- "rm" ((long)(arg2)), \
- "rm" ((long)(arg3)) \
- : "memory","CC","R0","R1","R2","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)), \
+ "q1" ((long)(arg2)), \
+ "q2" ((long)(arg3)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -103,20 +90,14 @@
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4) { \
long __res; \
__asm__ __volatile__ ( \
- "r3=%5;\n\t" \
- "r2=%4;\n\t" \
- "r1=%3;\n\t" \
- "r0=%2;\n\t" \
- "p0=%1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)), \
- "rm" ((long)(arg2)), \
- "rm" ((long)(arg3)), \
- "rm" ((long)(arg4)) \
- : "memory","CC","R0","R1","R2","R3","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)), \
+ "q1" ((long)(arg2)), \
+ "q2" ((long)(arg3)), \
+ "q3" ((long)(arg4)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -124,22 +105,15 @@
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5) { \
long __res; \
__asm__ __volatile__ ( \
- "r4=%6;\n\t" \
- "r3=%5;\n\t" \
- "r2=%4;\n\t" \
- "r1=%3;\n\t" \
- "r0=%2;\n\t" \
- "P0=%1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)), \
- "rm" ((long)(arg2)), \
- "rm" ((long)(arg3)), \
- "rm" ((long)(arg4)), \
- "rm" ((long)(arg5)) \
- : "memory","CC","R0","R1","R2","R3","R4","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)), \
+ "q1" ((long)(arg2)), \
+ "q2" ((long)(arg3)), \
+ "q3" ((long)(arg4)), \
+ "q4" ((long)(arg5)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
@@ -147,24 +121,16 @@
type name(type1 arg1, type2 arg2, type3 arg3, type4 arg4, type5 arg5, type6 arg6) { \
long __res; \
__asm__ __volatile__ ( \
- "r5=%7;\n\t" \
- "r4=%6;\n\t" \
- "r3=%5;\n\t" \
- "r2=%4;\n\t" \
- "r1=%3;\n\t" \
- "r0=%2;\n\t" \
- "P0=%1;\n\t" \
"excpt 0;\n\t" \
- "%0=r0;\n\t" \
- : "=da" (__res) \
- : "i" (__NR_##name), \
- "rm" ((long)(arg1)), \
- "rm" ((long)(arg2)), \
- "rm" ((long)(arg3)), \
- "rm" ((long)(arg4)), \
- "rm" ((long)(arg5)), \
- "rm" ((long)(arg6)) \
- : "memory","CC","R0","R1","R2","R3","R4","R5","P0"); \
+ : "=q0" (__res) \
+ : "qA" (__NR_##name), \
+ "q0" ((long)(arg1)), \
+ "q1" ((long)(arg2)), \
+ "q2" ((long)(arg3)), \
+ "q3" ((long)(arg4)), \
+ "q4" ((long)(arg5)), \
+ "q5" ((long)(arg6)) \
+ : "memory","CC"); \
__syscall_return(type,__res); \
}
Modified: trunk/uClibc/libc/sysdeps/linux/bfin/brk.c
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/bfin/brk.c 2007-09-15 10:57:09 UTC (rev 19847)
+++ trunk/uClibc/libc/sysdeps/linux/bfin/brk.c 2007-09-15 11:02:36 UTC (rev 19848)
@@ -19,11 +19,9 @@
__asm__ __volatile__(
"P0 = %2;\n\t"
- "R0 = %1;\n\t"
"excpt 0;\n\t"
- "%0 = R0;\n\t"
- : "=r"(newbrk)
- : "r"(addr), "i" (__NR_brk): "P0" );
+ : "=q0" (newbrk)
+ : "q0" (addr), "i" (__NR_brk): "P0" );
__curbrk = newbrk;
Modified: trunk/uClibc/libc/sysdeps/linux/bfin/clone.c
===================================================================
--- trunk/uClibc/libc/sysdeps/linux/bfin/clone.c 2007-09-15 10:57:09 UTC (rev 19847)
+++ trunk/uClibc/libc/sysdeps/linux/bfin/clone.c 2007-09-15 11:02:36 UTC (rev 19848)
@@ -19,11 +19,7 @@
#ifdef __BFIN_FDPIC__
__asm__ __volatile__ (
- "r1 = %2;"
- "r0 = %3;"
- "P0 = %1;"
"excpt 0;" /*Call sys_clone*/
- "%0 = r0;"
"cc = r0 == 0;"
"if !cc jump .Lxxx;" /* if (rval != 0) skip to parent */
"r0 = %4;"
@@ -35,16 +31,12 @@
"p0 = %6;"
"excpt 0;" /* Call sys_exit */
".Lxxx: nop;"
- : "=d" (rval)
- : "i" (__NR_clone), "a" (child_stack), "a" (flags), "a" (arg), "a" (fn), "i" (__NR_exit)
- : "CC", "R0", "R1", "P0");
+ : "=q0" (rval)
+ : "qA" (__NR_clone), "q1" (child_stack), "q0" (flags), "a" (arg), "a" (fn), "i" (__NR_exit)
+ : "CC");
#else
__asm__ __volatile__ (
- "r1 = %2;"
- "r0 = %3;"
- "P0 = %1;"
"excpt 0;" /*Call sys_clone*/
- "%0 = r0;"
"cc = r0 == 0;"
"if !cc jump .Lxxx;" /* if (rval != 0) skip to parent */
"r0 = %4;"
@@ -54,9 +46,9 @@
"p0 = %6;"
"excpt 0;" /* Call sys_exit */
".Lxxx: nop;"
- : "=d" (rval)
- : "i" (__NR_clone), "a" (child_stack), "a" (flags), "a" (arg), "a" (fn), "i" (__NR_exit)
- : "CC", "R0", "R1", "P0");
+ : "=q0" (rval)
+ : "qA" (__NR_clone), "q1" (child_stack), "q0" (flags), "a" (arg), "a" (fn), "i" (__NR_exit)
+ : "CC");
#endif
} else {
More information about the uClibc-cvs
mailing list