From cb845c5dfcd76a84ca67247f58bbc94cf9b0e097 Mon Sep 17 00:00:00 2001
From: Anton <anton.frappe@outlook.com>
Date: Wed, 3 Mar 2021 16:52:14 +0100
Subject: [PATCH] bare2_3
---
examples/rtic_bare2.rs | 12 +++++++++---
1 file changed, 9 insertions(+), 3 deletions(-)
diff --git a/examples/rtic_bare2.rs b/examples/rtic_bare2.rs
index 0c88115..26ba3d2 100644
--- a/examples/rtic_bare2.rs
+++ b/examples/rtic_bare2.rs
@@ -39,7 +39,7 @@ const APP: () = {
hprintln!("End {:?}", end).ok();
hprintln!("Diff {:?}", end.wrapping_sub(start)).ok();
- // wait(100);
+ wait(100);
}
};
@@ -138,10 +138,16 @@ fn wait(i: u32) {
//
// Dump the generated assembly for the "wait" function.
//
-// ** your answer here **
+// => 0x080004a0 <+0>: push {r7, lr}
+// 0x080004a2 <+2>: mov r7, sp
+// 0x080004a4 <+4>: nop
+// 0x080004a6 <+6>: subs r0, #1
+// 0x080004a8 <+8>: bne.n 0x80004a4 <rtic_bare2::wait+4>
+// 0x080004aa <+10>: pop {r7, pc}
//
// Answer in your own words, why you believe the generated code differs?
//
-// ** your answer here **
+// Now that the function needs to be more generic (it has several uses), the
+// argument is now stored and used inside r0 instead of initialized inside the function.
//
// Commit your answers (bare2_3)
--
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