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diff python/cortexm3.py @ 251:6ed3d3a82a63

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Added another c3 example. First import attempt
author Windel Bouwman
date Mon, 29 Jul 2013 20:23:13 +0200
parents 90637d1bbfad
children 04c19282a5aa
line wrap: on
line diff
--- a/python/cortexm3.py	Sun Jul 28 19:07:51 2013 +0200
+++ b/python/cortexm3.py	Mon Jul 29 20:23:13 2013 +0200
@@ -487,6 +487,20 @@
         h = (0b11100 << 11) | imm11 # | 1 # 1 to enable thumb mode
         return u16(h)
 
+@armtarget.instruction
+class bl_ins(jumpBase_ins):
+    mnemonic = 'BL'
+    def encode(self):
+        imm32 = wrap_negative(self.offset >> 1, 32)
+        imm11 = imm32 & 0x7FF
+        imm10 = (imm32 >> 11) & 0x3FF
+        j1 = 1 # TODO: what do these mean?
+        j2 = 1
+        s = (imm32 >> 24) & 0x1
+        h1 = (0b11110 << 11) | (s << 10) | imm10 
+        h2 = (0b1101 << 12) | (j1 << 13) | (j2 << 11) | imm11
+        return u16(h1) + u16(h2)
+
 class cond_base_ins(jumpBase_ins):
     def encode(self):
         imm8 = wrap_negative(self.offset >> 1, 8)