Merge remote-tracking branch 'remotes/pmaydell/tags/pull-target-arm-20140208' into staging

target-arm queue:
 * more A64 Neon instructions
 * AArch32 VCVTB and VCVTT ARMv8 instructions
 * fixes to inaccuracies in GIC emulation
 * libvixl disassembler for A64
 * Allwinner SoC ethernet controller
 * zynq software system reset support

# gpg: Signature made Sat 08 Feb 2014 15:53:05 GMT using RSA key ID 14360CDE
# gpg: Good signature from "Peter Maydell <peter.maydell@linaro.org>"

* remotes/pmaydell/tags/pull-target-arm-20140208: (29 commits)
  arm/zynq: Add software system reset via SCLR
  hw/arm/allwinner-a10: initialize EMAC
  hw/net: add support for Allwinner EMAC Fast Ethernet controller
  util/fifo8: clear fifo head upon reset
  util/fifo8: implement push/pop of multiple bytes
  disas: Implement disassembly output for A64
  disas/libvixl: Fix upstream libvixl compilation issues
  disas: Add subset of libvixl sources for A64 disassembler
  rules.mak: Link with C++ if we have a C++ compiler
  rules.mak: Support .cc as a C++ source file suffix
  arm_gic: Add GICC_APRn state to the GICState
  vmstate: Add uint32 2D-array support
  arm_gic: Support setting/getting binary point reg
  arm_gic: Keep track of SGI sources
  arm_gic: Fix GIC pending behavior
  target-arm: Add support for AArch32 64bit VCVTB and VCVTT
  target-arm: A64: Add FNEG and FABS to the SIMD 2-reg-misc group
  target-arm: A64: Add 2-reg-misc REV* instructions
  target-arm: A64: Add narrowing 2-reg-misc instructions
  target-arm: A64: Implement 2-reg-misc CNT, NOT and RBIT
  ...

Signed-off-by: Peter Maydell <peter.maydell@linaro.org>

1 files changed, 47 insertions, 0 deletions

diff --git a/util/fifo8.c b/util/fifo8.c
index 013e903c6e..6a43482c9e 100644
--- a/util/fifo8.c
+++ b/util/fifo8.c
@@ -37,6 +37,27 @@ void fifo8_push(Fifo8 *fifo, uint8_t data)
     fifo->num++;
 }
 
+void fifo8_push_all(Fifo8 *fifo, const uint8_t *data, uint32_t num)
+{
+    uint32_t start, avail;
+
+    if (fifo->num + num > fifo->capacity) {
+        abort();
+    }
+
+    start = (fifo->head + fifo->num) % fifo->capacity;
+
+    if (start + num <= fifo->capacity) {
+        memcpy(&fifo->data[start], data, num);
+    } else {
+        avail = fifo->capacity - start;
+        memcpy(&fifo->data[start], data, avail);
+        memcpy(&fifo->data[0], &data[avail], num - avail);
+    }
+
+    fifo->num += num;
+}
+
 uint8_t fifo8_pop(Fifo8 *fifo)
 {
     uint8_t ret;
@@ -50,9 +71,25 @@ uint8_t fifo8_pop(Fifo8 *fifo)
     return ret;
 }
 
+const uint8_t *fifo8_pop_buf(Fifo8 *fifo, uint32_t max, uint32_t *num)
+{
+    uint8_t *ret;
+
+    if (max == 0 || max > fifo->num) {
+        abort();
+    }
+    *num = MIN(fifo->capacity - fifo->head, max);
+    ret = &fifo->data[fifo->head];
+    fifo->head += *num;
+    fifo->head %= fifo->capacity;
+    fifo->num -= *num;
+    return ret;
+}
+
 void fifo8_reset(Fifo8 *fifo)
 {
     fifo->num = 0;
+    fifo->head = 0;
 }
 
 bool fifo8_is_empty(Fifo8 *fifo)
@@ -65,6 +102,16 @@ bool fifo8_is_full(Fifo8 *fifo)
     return (fifo->num == fifo->capacity);
 }
 
+uint32_t fifo8_num_free(Fifo8 *fifo)
+{
+    return fifo->capacity - fifo->num;
+}
+
+uint32_t fifo8_num_used(Fifo8 *fifo)
+{
+    return fifo->num;
+}
+
 const VMStateDescription vmstate_fifo8 = {
     .name = "Fifo8",
     .version_id = 1,