diff options
Diffstat (limited to 'src/common.h')
| -rw-r--r-- | src/common.h | 37 |
1 files changed, 37 insertions, 0 deletions
diff --git a/src/common.h b/src/common.h index 8f42bde8..6e8ddbda 100644 --- a/src/common.h +++ b/src/common.h @@ -131,6 +131,43 @@ extern void I830DPRINTF_stub(const char *filename, int line, outring &= ringmask; \ } while (0) +static inline void memset_volatile(volatile void *b, int c, size_t len) +{ + int i; + + for (i = 0; i < len; i++) + ((volatile char *)b)[i] = c; +} + +static inline void memcpy_volatile(volatile void *dst, const void *src, + size_t len) +{ + int i; + + for (i = 0; i < len; i++) + ((volatile char *)dst)[i] = ((volatile char *)src)[i]; +} + +/** Copies a given number of bytes to the ring */ +#define OUT_RING_COPY(n, ptr) do { \ + if (I810_DEBUG & DEBUG_VERBOSE_RING) \ + ErrorF("OUT_RING_DATA %d bytes\n", n); \ + memcpy_volatile(virt + outring, ptr, n); \ + outring += n; \ + ringused += n; \ + outring &= ringmask; \ +} while (0) + +/** Pads the ring with a given number of zero bytes */ +#define OUT_RING_PAD(n) do { \ + if (I810_DEBUG & DEBUG_VERBOSE_RING) \ + ErrorF("OUT_RING_PAD %d bytes\n", n); \ + memset_volatile(virt + outring, 0, n); \ + outring += n; \ + ringused += n; \ + outring &= ringmask; \ +} while (0) + union intfloat { float f; unsigned int ui; |