1 files changed, 41 insertions, 0 deletions
diff --git a/vm/mterp/armv5te/platform.S b/vm/mterp/armv5te/platform.S
new file mode 100644
index 0000000..9f59c8b
--- /dev/null
+++ b/vm/mterp/armv5te/platform.S
@@ -0,0 +1,41 @@
+/*
+ * ===========================================================================
+ *  CPU-version-specific defines
+ * ===========================================================================
+ */
+
+/*
+ * Macro for "LDR PC,xxx", which is not allowed pre-ARMv5.  Essentially a
+ * one-way branch.
+ *
+ * May modify IP.  Does not modify LR.
+ */
+.macro  LDR_PC source
+    ldr     pc, \source
+.endm
+
+/*
+ * Macro for "MOV LR,PC / LDR PC,xxx", which is not allowed pre-ARMv5.
+ * Jump to subroutine.
+ *
+ * May modify IP and LR.
+ */
+.macro  LDR_PC_LR source
+    mov     lr, pc
+    ldr     pc, \source
+.endm
+
+/*
+ * Macro for "LDMFD SP!, {...regs...,PC}".
+ *
+ * May modify IP and LR.
+ */
+.macro  LDMFD_PC regs
+    ldmfd   sp!, {\regs,pc}
+.endm
+
+/*
+ * Macro for data memory barrier; not meaningful pre-ARMv6K.
+ */
+.macro  SMP_DMB
+.endm