1 files changed, 89 insertions, 0 deletions
diff --git a/README.md b/README.md
new file mode 100644
index 0000000..3c8feec
--- /dev/null
+++ b/README.md
@@ -0,0 +1,89 @@
+# qbt
+
+Optimizing middle/back end for triscv.
+
+# ABI
+
+| Register | Name |
+|----------|------|
+| x0       | x0
+| x1       | sp
+| x2       | fp
+| x3       | gp
+| x4       | a0
+| x5       | a1
+| x6       | a2
+| x7       | a3
+| x8       | a4
+| x9       | a5
+| x10      | a6
+| x11      | t0
+| x12      | t1
+| x13      | t2
+| x14      | t3
+| x15      | t4
+| x16      | t5
+| x17      | t6
+| x18      | s0
+| x19      | s1
+| x20      | s2
+| x21      | s3
+| x22      | s4
+| x23      | s5
+| x24      | s6
+| x25      | tp
+| x26      | ra
+| x27      | a7
+| x28      | a8
+| x29      | a9
+| x30      | a10
+| x31      | a11
+| x32      | a12
+| x33      | a13
+| x34      | a14
+| x35      | a15
+| x36      | a16
+| x37      | a17
+| x38      | a19
+| x39      | a20
+| x40      | a20
+| x41      | a21
+| x42      | a22
+| x43      | a23
+| x44      | a24
+| x45      | t7
+| x46      | t8
+| x47      | t9
+| x48      | t10
+| x49      | t11
+| x50      | t12
+| x51      | t13
+| x52      | t14
+| x53      | t15
+| x54      | t16
+| x55      | t17
+| x56      | t18
+| x57      | t19
+| x58      | t20
+| x59      | t21
+| x60      | t22
+| x61      | t23
+| x62      | t24
+| x63      | s7
+| x64      | s8
+| x65      | s9
+| x66      | s10
+| x67      | s11
+| x68      | s12
+| x69      | s13
+| x70      | s14
+| x71      | s15
+| x72      | s16
+| x73      | s17
+| x74      | s18
+| x75      | s19
+| x76      | s20
+| x77      | s21
+| x78      | s22
+| x79      | s23
+| x80      | s24