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| author | Marcos Diaz <marcos.diaz@tallertechnologies.com> | 2015-09-10 10:20:41 -0500 |
|---|---|---|
| committer | Joel Sherrill <joel.sherrill@oarcorp.com> | 2015-09-10 13:30:43 -0500 |
| commit | 44eb9893b5c08093f7d53cdfd4c1d2e7bb4a5e39 (patch) | |
| tree | 007ce1cc8162c5c64bd2aaa241aaa3c9d133cf33 /c/src/lib/libbsp | |
| parent | cpukit/libmisc/dumpbuf/dumpbuf.c: Fix compilation warnings (diff) | |
| download | rtems-44eb9893b5c08093f7d53cdfd4c1d2e7bb4a5e39.tar.bz2 | |
Beaglebone: fix missing clobber in inline assembly.
flush_data_cache uses R0 directly but doesn't list it as a clobbered
register. Compiling with -O3 made this code break, since the function
that calls flush_data_cache already uses r0.
closes #2416.
Diffstat (limited to 'c/src/lib/libbsp')
| -rw-r--r-- | c/src/lib/libbsp/arm/beagle/include/bsp.h | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/c/src/lib/libbsp/arm/beagle/include/bsp.h b/c/src/lib/libbsp/arm/beagle/include/bsp.h index e43d27a7a5..5e9e92733d 100644 --- a/c/src/lib/libbsp/arm/beagle/include/bsp.h +++ b/c/src/lib/libbsp/arm/beagle/include/bsp.h @@ -111,7 +111,13 @@ static inline void isb(void) /* flush data cache */ static inline void flush_data_cache(void) { - asm volatile("mov r0, #0; mcr p15, #0, r0, c7, c10, #4" : : : "memory"); + asm volatile( + "mov r0, #0\n" + "mcr p15, #0, r0, c7, c10, #4\n" + : /* No outputs */ + : /* No inputs */ + : "r0","memory" + ); } #define __arch_getb(a) (*(volatile unsigned char *)(a)) |