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Perry Kivolowitz 2022-06-10 02:55:31 -05:00
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16
.vscode/settings.json vendored
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@ -4,12 +4,23 @@
"argc", "argc",
"argv", "argv",
"asciz", "asciz",
"cbnz",
"cout", "cout",
"csel", "csel",
"fizzbuzz",
"fname",
"Formulus", "Formulus",
"funcs",
"iostream", "iostream",
"ldrb",
"ldrh",
"lname",
"memcpy", "memcpy",
"pimm",
"pseudocode", "pseudocode",
"regs",
"simm",
"smaddl",
"stringstream", "stringstream",
"strncpy", "strncpy",
"struct", "struct",
@ -17,5 +28,8 @@
], ],
"markdownlint.config": { "markdownlint.config": {
"MD024":false "MD024":false
} },
"cSpell.ignoreWords": [
"foov"
]
} }

19
README.md
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@ -45,15 +45,16 @@ the 64 bit ARM Instruction Set Architecture (ISA).
| 1 | [Hello World](./section_1/hello_world/README.md) | | 1 | [Hello World](./section_1/hello_world/README.md) |
| 2 | [If Statements](./section_1/if/README.md) | | 2 | [If Statements](./section_1/if/README.md) |
| 3 | Loops | | 3 | Loops |
| 3 a | [   While Loops](./section_1/while/README.md) | | 3 a | [....While Loops](./section_1/while/README.md) |
| 3 b | [   For Loops](./section_1/for/README.md) | | 3 b | [....For Loops](./section_1/for/README.md) |
| 3 c | [   Implementing Continue](./section_1/for/README.md#implementing-a-continue) | 3 c | [....Implementing Continue](./section_1/for/README.md#implementing-a-continue)
| 3 d | [   Implementing Break](./section_1/for/README.md#implementing-a-break) | 3 d | [....Implementing Break](./section_1/for/README.md#implementing-a-break)
| 4 | [Interlude - Registers](./section_1/regs/README.md) | | 4 | Interludes |
| 5 | [Interlude - Load and Store](./section_1/regs/ldr.md) | | 4 a | [....Registers](./section_1/regs/README.md) |
| 6 | [Calling and Returning From Functions](./section_1/funcs/README.md) | | 4 b | [....Load and Store](./section_1/regs/ldr.md) |
| 7 | [Passing Parameters To Functions](./section_1/funcs/README2.md) | | 5 | [Calling and Returning From Functions](./section_1/funcs/README.md) |
| 8 | [FizzBuzz - a Complete Program](./section_1/fizzbuzz/README.md) | | 6 | [Passing Parameters To Functions](./section_1/funcs/README2.md) |
| 7 | [FizzBuzz - a Complete Program](./section_1/fizzbuzz/README.md) |
## Section 2 - Stuff ## Section 2 - Stuff

2
section_1/fizzbuzz/README.md
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@ -1,4 +1,4 @@
# Section 1 / Chapter 8 / FizzBuzz # Section 1 / Chapter 7 / FizzBuzz
In this chapter we build the classic tech interview question: FizzBuzz. In this chapter we build the classic tech interview question: FizzBuzz.

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section_1/funcs/README.md
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@ -1,4 +1,4 @@
# Section 1 / Chapter 6 / Calling and Returning From Functions # Section 1 / Chapter 5 / Calling and Returning From Functions
Calling functions, passing parameters to them and receiving back return values is basic to using `C` and and `C++`. Calling methods (which are functions connected to classes) is similar but with enough differences to warrant its own discussion to be provided later in the chapter on [structs](../struct/structs.md). Calling functions, passing parameters to them and receiving back return values is basic to using `C` and and `C++`. Calling methods (which are functions connected to classes) is similar but with enough differences to warrant its own discussion to be provided later in the chapter on [structs](../struct/structs.md).

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section_1/funcs/README2.md
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@ -1,4 +1,4 @@
# Section 1 / Chapter 7 / Passing Parameters To Functions # Section 1 / Chapter 6 / Passing Parameters To Functions
Up to 8 parameters can be passed directly via registers. Each parameter can be up to the size of an address, long or double (8 bytes). If you need to pass more than 8 parameters or you need to pass parameters which are larger than 8 bytes or are `structs`, you would use a different technique described later. Up to 8 parameters can be passed directly via registers. Each parameter can be up to the size of an address, long or double (8 bytes). If you need to pass more than 8 parameters or you need to pass parameters which are larger than 8 bytes or are `structs`, you would use a different technique described later.

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section_1/regs/README.md
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@ -1,4 +1,4 @@
# Section 1 / Chapter 4 / Interlude - Registers # Section 1 / Chapter 4 a / Interlude - Registers
We have discussed and used registers in the previous chapters without explanation. This chapter We have discussed and used registers in the previous chapters without explanation. This chapter
introduces the concept of registers and explains why registers are critical. introduces the concept of registers and explains why registers are critical.

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section_1/regs/ldr.md
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@ -1,4 +1,4 @@
# Section 1 / Chapter 5 / Interlude - Load and Store # Section 1 / Chapter 4 b / Interlude - Load and Store
In this section we will review the `ldr` and `str` families of instructions. In this section we will review the `ldr` and `str` families of instructions.
@ -487,7 +487,7 @@ of 8.
smaddl x4, w1, w5, x3 // initialize end_ptr // 19 smaddl x4, w1, w5, x3 // initialize end_ptr // 19
``` ```
`w1` (the length) will be multipled by `w5` (the size of each array member), added to `x3` (the base address of the array) and the result will be placed into `x4`. This assembly language instruction implements this in C: `w1` (the length) will be multiplied by `w5` (the size of each array member), added to `x3` (the base address of the array) and the result will be placed into `x4`. This assembly language instruction implements this in C:
```c ```c
struct Person * end_ptr = people + length; /* 20 */ struct Person * end_ptr = people + length; /* 20 */