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-rw-r--r--linux/308allocate-array.subx25
1 files changed, 25 insertions, 0 deletions
diff --git a/linux/308allocate-array.subx b/linux/308allocate-array.subx
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+++ b/linux/308allocate-array.subx
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+# 2-arg version of allocate-array.
+# Really only intended to be called from code generated by mu.subx.
+
+== code
+
+allocate-array2:  # ad: (addr allocation-descriptor), array-len: int, elem-size: int, out: (addr handle array _)
+    # . prologue
+    55/push-ebp
+    89/<- %ebp 4/r32/esp
+    # . save registers
+    50/push-eax
+    52/push-edx
+    #
+    8b/-> *(ebp+0xc) 0/r32/eax
+    f7 4/subop/multiply-into-edx-eax *(ebp+0x10)
+    # TODO: check edx for overflow
+    (allocate-array *(ebp+8) %eax *(ebp+0x14))
+$allocate-array2:end:
+    # . restore registers
+    5a/pop-to-edx
+    58/pop-to-eax
+    # . epilogue
+    89/<- %esp 5/r32/ebp
+    5d/pop-to-ebp
+    c3/return