X-Git-Url: https://notaz.gp2x.de/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=gp2x%2Fsys_cacheflush.S;fp=gp2x%2Fsys_cacheflush.S;h=d26f81ab46f86d7a49425fa38038b44a8a13484f;hb=5cc8854bc94b22e52d747e67cc9b7ca310711181;hp=0000000000000000000000000000000000000000;hpb=8ff85457e314c627df92d4be65f3e75f540110e8;p=gpsp.git

diff --git a/gp2x/sys_cacheflush.S b/gp2x/sys_cacheflush.S
new file mode 100644
index 0000000..d26f81a
--- /dev/null
+++ b/gp2x/sys_cacheflush.S
@@ -0,0 +1,29 @@
+@ vim:filetype=armasm
+#include <sys/syscall.h>
+
+
+.global sys_cacheflush @ void *start_addr, void *end_addr
+
+sys_cacheflush:
+    mov     r2, #0
+#ifdef __ARM_EABI__
+    /* EABI version */
+    str     r7, [sp, #-4]!
+    mov     r7, #(__ARM_NR_cacheflush & 0xff)
+    orr     r7, r7, #(__ARM_NR_cacheflush & 0x00ff00)
+    orr     r7, r7, #(__ARM_NR_cacheflush & 0xff0000)
+    swi     0
+    ldr     r7, [sp], #4
+#else
+    /* OABI */
+    swi     __ARM_NR_cacheflush
+#endif
+    bx      lr
+
+.global spend_cycles
+spend_cycles:
+    mov r0,r0,lsr #2
+  0:subs r0, r0, #1
+    bne 0b
+    bx lr
+