1 files changed, 77 insertions, 0 deletions
diff --git a/aarch64/aapcs.c b/aarch64/aapcs.c
new file mode 100644
index 0000000..fc08da1
--- /dev/null
+++ b/aarch64/aapcs.c
@@ -0,0 +1,77 @@
+#include "all.h"
+
+static int
+abiarg(short r[2], uchar cls[2], uchar *r2off, int *ni, int *nf, int *ns, union irtype typ)
+{
+   enum { NINT = 8, NFLT = 8 };
+   if (!typ.isagg) {
+      if (kisflt(cls[0] = typ.cls) && *nf < 8) {
+         r[0] = V(0) + (*nf)++;
+      } else if (kisint(cls[0]) && *ni < NINT) {
+         r[0] = R0 + (*ni)++;
+      } else {
+         r[0] = *ns;
+         *ns += 8;
+         return 0; /* MEMORY */
+      }
+      return 1;
+   } else assert(!"nyi");
+}
+
+static int
+abiret(short r[2], uchar cls[2], uchar *r2off, int *ni, union irtype typ)
+{
+   if (!typ.isagg) {
+      r[0] = kisflt(cls[0] = typ.cls) ? V(0) : R0;
+      return 1;
+   }
+   int nf = 0, ns = 0;
+   int ret = abiarg(r, cls, r2off, ni, &nf, &ns, typ);
+   if (ret) return ret;
+   /* caller-allocated result address in x8 */
+   assert(*ni == 0);
+   r[0] = -1;
+   r[1] = R(8);
+   return 0;
+}
+
+static void
+vastart(struct function *fn, struct block *blk, int *curi)
+{
+   assert(!"nyi");
+}
+
+static void
+vaarg(struct function *fn, struct block *blk, int *curi)
+{
+   assert(!"nyi");
+}
+
+static const char aarch64_rnames[][6] = {
+    "R0", "R1", "R2", "R3", "R4", "R5", "R6", "R7", "R8", "R9","R10","R11","R12","R13","R14","R15",
+   "R16","R17","R18","R19","R20","R21","R22","R23","R24","R25","R26","R27","R28", "FP", "LR", "SP",
+    "V0", "V1", "V2", "V3", "V4", "V5", "V6", "V7", "V8", "V9","V10","V11","V12","V13","V14","V15",
+   "V16","V17","V18","V19","V20","V21","V22","V23","V24","V25","V26","V27","V28","V29","V30","V31",
+};
+
+const struct mctarg t_aarch64_aapcs = {
+   .gpr0 = R0, .ngpr = 31,
+   .bpr = FP,
+   .gprscratch = R(16), .fprscratch = V(31),
+   .fpr0 = V0, .nfpr = 32,
+   .rcallee = BIT(R(19)) | BIT(R(20)) | BIT(R(21)) | BIT(R(22)) | BIT(R(23))
+            | BIT(R(24)) | BIT(R(25)) | BIT(R(26)) | BIT(R(27)) | BIT(R(28))
+            | BIT( V(8)) | BIT( V(9)) | BIT(V(10)) | BIT(V(11)) | BIT(V(12))
+            | BIT(V(13)) | BIT(V(14)) | BIT(V(15)),
+   .rglob = BIT(FP) | BIT(LR) | BIT(SP),
+   .rnames = aarch64_rnames,
+   .objkind = OBJELF,
+   .abiret = abiret,
+   .abiarg = abiarg,
+   .vastart = vastart,
+   .vaarg = vaarg,
+   .isel = aarch64_isel,
+   .emit = aarch64_emit,
+};
+
+/* vim:set ts=3 sw=3 expandtab: */