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Add read_byte_via_xc_ptr_indexed for reading from buffer byte by byte.

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Russell Gallop
2011-08-17 16:31:03 +01:00
parent 4d355517c6
commit b821b92041
1 changed files with 1 additions and 0 deletions
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module_usb_aud_shared/usb_buffer/xc_ptr.h
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@@ -17,6 +17,7 @@ inline xc_ptr array_to_xc_ptr(unsigned a[]) {
#define read_via_xc_ptr(x,p) asm("ldw %0, %1[0]":"=r"(x):"r"(p));
#define read_via_xc_ptr_indexed(x,p,i) asm("ldw %0, %1[%2]":"=r"(x):"r"(p),"r"(i));
#define read_byte_via_xc_ptr_indexed(x,p,i) asm("ld8u %0, %1[%2]":"=r"(x):"r"(p),"r"(i));
#define GET_SHARED_GLOBAL(x, g) asm("ldw %0, dp[" #g "]":"=r"(x))
#define SET_SHARED_GLOBAL(g, v) asm("stw %0, dp[" #g "]"::"r"(v))