refactor(arch/*/kernel): factor out duplicated code

[fogti]

This is just a suggestion, but I found it way easier to understand code when the parts that are actually 100% identical aren't duplicated in per-architecture code.

[github-actions]

Benchmark Results

Details

Benchmark	Current: 89eeaba	Previous: 16a22e7	Performance Ratio
startup_benchmark Build Time	96.39 s	99.12 s	0.97 ❗
startup_benchmark File Size	0.83 MB	0.87 MB	0.95 ❗
Startup Time - 1 core	0.93 s (±0.03 s)	0.93 s (±0.04 s)	1.00
Startup Time - 2 cores	0.95 s (±0.03 s)	0.95 s (±0.03 s)	1.00
Startup Time - 4 cores	0.93 s (±0.03 s)	0.94 s (±0.03 s)	0.99
multithreaded_benchmark Build Time	97.43 s	100.01 s	0.97 ❗
multithreaded_benchmark File Size	0.90 MB	0.97 MB	0.94 ❗
Multithreaded Pi Efficiency - 2 Threads	87.68 % (±9.60 %)	88.99 % (±7.74 %)	0.99
Multithreaded Pi Efficiency - 4 Threads	43.99 % (±3.98 %)	44.13 % (±3.07 %)	1.00
Multithreaded Pi Efficiency - 8 Threads	25.42 % (±2.01 %)	25.15 % (±1.66 %)	1.01
micro_benchmarks Build Time	93.57 s	100.62 s	0.93 ❗
micro_benchmarks File Size	0.91 MB	0.97 MB	0.94 ❗
Scheduling time - 1 thread	62.26 ticks (±3.48 ticks)	68.14 ticks (±3.26 ticks)	0.91 ❗
Scheduling time - 2 threads	35.08 ticks (±4.80 ticks)	39.01 ticks (±4.61 ticks)	0.90
Micro - Time for syscall (getpid)	3.07 ticks (±0.43 ticks)	3.12 ticks (±0.39 ticks)	0.98
Memcpy speed - (built_in) block size 4096	69561.78 MByte/s (±49606.23 MByte/s)	66786.53 MByte/s (±47591.91 MByte/s)	1.04
Memcpy speed - (built_in) block size 1048576	29726.58 MByte/s (±24350.62 MByte/s)	29552.08 MByte/s (±24310.39 MByte/s)	1.01
Memcpy speed - (built_in) block size 16777216	28753.74 MByte/s (±23938.61 MByte/s)	25151.21 MByte/s (±21178.85 MByte/s)	1.14
Memset speed - (built_in) block size 4096	70186.78 MByte/s (±50061.09 MByte/s)	67637.46 MByte/s (±48175.30 MByte/s)	1.04
Memset speed - (built_in) block size 1048576	30499.03 MByte/s (±24787.81 MByte/s)	30319.75 MByte/s (±24748.87 MByte/s)	1.01
Memset speed - (built_in) block size 16777216	29509.21 MByte/s (±24362.14 MByte/s)	25928.00 MByte/s (±21681.13 MByte/s)	1.14
Memcpy speed - (rust) block size 4096	63014.64 MByte/s (±46440.82 MByte/s)	60535.12 MByte/s (±44756.46 MByte/s)	1.04
Memcpy speed - (rust) block size 1048576	29454.57 MByte/s (±24207.62 MByte/s)	29421.41 MByte/s (±24305.21 MByte/s)	1.00
Memcpy speed - (rust) block size 16777216	28813.56 MByte/s (±23999.96 MByte/s)	25300.69 MByte/s (±21103.33 MByte/s)	1.14
Memset speed - (rust) block size 4096	64115.45 MByte/s (±47159.92 MByte/s)	61198.04 MByte/s (±45180.33 MByte/s)	1.05
Memset speed - (rust) block size 1048576	30285.13 MByte/s (±24692.09 MByte/s)	30190.94 MByte/s (±24744.07 MByte/s)	1.00
Memset speed - (rust) block size 16777216	29582.65 MByte/s (±24434.30 MByte/s)	26075.17 MByte/s (±21606.28 MByte/s)	1.13
alloc_benchmarks Build Time	92.18 s	92.43 s	1.00 ❗
alloc_benchmarks File Size	0.90 MB	0.94 MB	0.96 ❗
Allocations - Allocation success	100.00 %	100.00 %	1
Allocations - Deallocation success	100.00 %	100.00 %	1
Allocations - Pre-fail Allocations	100.00 %	100.00 %	1
Allocations - Average Allocation time	7287.91 Ticks (±76.49 Ticks)	7342.54 Ticks (±125.42 Ticks)	0.99
Allocations - Average Allocation time (no fail)	7287.91 Ticks (±76.49 Ticks)	7342.54 Ticks (±125.42 Ticks)	0.99
Allocations - Average Deallocation time	806.31 Ticks (±159.42 Ticks)	1122.16 Ticks (±303.26 Ticks)	0.72
mutex_benchmark Build Time	92.04 s	92.24 s	1.00 ❗
mutex_benchmark File Size	0.91 MB	0.97 MB	0.94 ❗
Mutex Stress Test Average Time per Iteration - 1 Threads	12.54 ns (±0.61 ns)	12.48 ns (±0.61 ns)	1.00
Mutex Stress Test Average Time per Iteration - 2 Threads	12.84 ns (±0.78 ns)	12.78 ns (±0.83 ns)	1.00

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