From 6161502ec70e0f2fa1c67bc160a66b41ff552f44 Mon Sep 17 00:00:00 2001
From: Ridgep <ridpet-5@student.ltu.se>
Date: Thu, 7 Mar 2019 16:08:10 +0100
Subject: [PATCH] bare1_5
---
examples/bare1.rs | 48 ++++++++++++++++++++++++++++++++++++++++++++---
1 file changed, 45 insertions(+), 3 deletions(-)
diff --git a/examples/bare1.rs b/examples/bare1.rs
index dc2ec3f..eda056e 100644
--- a/examples/bare1.rs
+++ b/examples/bare1.rs
@@ -153,7 +153,42 @@ fn main() -> ! {
// What is the output of:
// (gdb) disassemble
//
-
+// Dump of assembler code for function main:
+// 0x08000404 <+0>: sub sp, #16
+// 0x08000406 <+2>: movs r0, #0
+// 0x08000408 <+4>: str r0, [sp, #12]
+// 0x0800040a <+6>: b.n 0x800040c <main+8>
+// 0x0800040c <+8>: ldr r0, [sp, #12]
+// 0x0800040e <+10>: adds r1, r0, #1
+// 0x08000410 <+12>: mov r2, r1
+// 0x08000412 <+14>: cmp r1, r0
+// 0x08000414 <+16>: str r2, [sp, #8]
+// 0x08000416 <+18>: bvs.n 0x800043a <main+54>
+// 0x08000418 <+20>: b.n 0x800041a <main+22>
+// 0x0800041a <+22>: ldr r0, [sp, #8]
+// 0x0800041c <+24>: str r0, [sp, #12]
+// 0x0800041e <+26>: bl 0x8000400 <cortex_m::asm::nop>
+// 0x08000422 <+30>: b.n 0x8000424 <main+32>
+// => 0x08000424 <+32>: bkpt 0x0000
+// 0x08000426 <+34>: b.n 0x8000428 <main+36>
+// 0x08000428 <+36>: ldr r0, [sp, #12]
+// 0x0800042a <+38>: subs r1, r0, #1
+// 0x0800042c <+40>: cmp r0, #1
+// 0x0800042e <+42>: str r1, [sp, #4]
+// 0x08000430 <+44>: bvs.n 0x8000448 <main+68>
+// 0x08000432 <+46>: b.n 0x8000434 <main+48>
+// 0x08000434 <+48>: ldr r0, [sp, #4]
+// 0x08000436 <+50>: str r0, [sp, #12]
+// 0x08000438 <+52>: b.n 0x800040c <main+8>
+// 0x0800043a <+54>: movw r0, #2268 ; 0x8dc
+// 0x0800043e <+58>: movt r0, #2048 ; 0x800
+// 0x08000442 <+62>: bl 0x800046a <panic>
+// 0x08000446 <+66>: udf #254 ; 0xfe
+// 0x08000448 <+68>: movw r0, #2340 ; 0x924
+// 0x0800044c <+72>: movt r0, #2048 ; 0x800
+// 0x08000450 <+76>: bl 0x800046a <panic>
+// 0x08000454 <+80>: udf #254 ; 0xfe
+// End of assembler dump.
//
// Commit your answers (bare1_4)
//
@@ -169,8 +204,15 @@ fn main() -> ! {
// The optimized version executes assembly commands that the unoptimized does not.
// It also is a lot longer with the length of the commands executed, due to this.
//
-
-
+// Dump of assembler code for function main:
+// 0x08000400 <+0>: nop
+// 0x08000402 <+2>: bkpt 0x0000
+// => 0x08000404 <+4>: b.n 0x8000400 <main>
+// End of assembler dump.
+//
+// As seen on the assemble code from task 2-4 and compared to task 5, the unoptimized
+// code is a lot longer and has more instructions than the optimized one.
+//
// commit your answers (bare1_5)
//
// Tips: The optimized build should have 3 instructions
--
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