summaryrefslogtreecommitdiff
path: root/target-sparc/vis_helper.c
diff options
context:
space:
mode:
Diffstat (limited to 'target-sparc/vis_helper.c')
-rw-r--r--target-sparc/vis_helper.c64
1 files changed, 64 insertions, 0 deletions
diff --git a/target-sparc/vis_helper.c b/target-sparc/vis_helper.c
index cd5d4a7ff3..59ca8d785f 100644
--- a/target-sparc/vis_helper.c
+++ b/target-sparc/vis_helper.c
@@ -417,3 +417,67 @@ uint64_t helper_pdist(uint64_t sum, uint64_t src1, uint64_t src2)
return sum;
}
+
+uint32_t helper_fpack16(uint64_t gsr, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0xf;
+ uint32_t ret = 0;
+ int byte;
+
+ for (byte = 0; byte < 4; byte++) {
+ uint32_t val;
+ int16_t src = rs2 >> (byte * 16);
+ int32_t scaled = src << scale;
+ int32_t from_fixed = scaled >> 7;
+
+ val = (from_fixed < 0 ? 0 :
+ from_fixed > 255 ? 255 : from_fixed);
+
+ ret |= val << (8 * byte);
+ }
+
+ return ret;
+}
+
+uint64_t helper_fpack32(uint64_t gsr, uint64_t rs1, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0x1f;
+ uint64_t ret = 0;
+ int word;
+
+ ret = (rs1 << 8) & ~(0x000000ff000000ffULL);
+ for (word = 0; word < 2; word++) {
+ uint64_t val;
+ int32_t src = rs2 >> (word * 32);
+ int64_t scaled = (int64_t)src << scale;
+ int64_t from_fixed = scaled >> 23;
+
+ val = (from_fixed < 0 ? 0 :
+ (from_fixed > 255) ? 255 : from_fixed);
+
+ ret |= val << (32 * word);
+ }
+
+ return ret;
+}
+
+uint32_t helper_fpackfix(uint64_t gsr, uint64_t rs2)
+{
+ int scale = (gsr >> 3) & 0x1f;
+ uint32_t ret = 0;
+ int word;
+
+ for (word = 0; word < 2; word++) {
+ uint32_t val;
+ int32_t src = rs2 >> (word * 32);
+ int64_t scaled = src << scale;
+ int64_t from_fixed = scaled >> 16;
+
+ val = (from_fixed < -32768 ? -32768 :
+ from_fixed > 32767 ? 32767 : from_fixed);
+
+ ret |= (val & 0xffff) << (word * 16);
+ }
+
+ return ret;
+}