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userland: attempt to fix all assembly example links to README

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Ciro Santilli 六四事件 法轮功
2019-05-12 00:00:08 +00:00
parent 180e26590a
commit b5f5f6a5bc
73 changed files with 119 additions and 112 deletions
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39
README.adoc
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@@ -9,7 +9,7 @@
:toclevels: 6
:toc-title:
The perfect emulation setup to study and develop the <<linux-kernel>> v5.0, kernel modules, <<qemu-buildroot-setup,QEMU>> and x86_64, ARMv7 and ARMv8 <<userland-assembly,userland>> and <<baremetal-setup,baremetal>> assembly. <<gdb>> and <<kgdb>> just work. Powered by <<about-the-qemu-buildroot-setup,Buildroot>> and <<about-the-baremetal-setup,crosstool-NG>>. Highly automated. Thoroughly documented. Automated <<test-this-repo,tests>>. "Tested" in an Ubuntu 18.04 host.
The perfect emulation setup to study and develop the <<linux-kernel>> v5.0, kernel modules, <<qemu-buildroot-setup,QEMU>>, <<gem5-buildroot-setup,gem5>> and x86_64, ARMv7 and ARMv8 <<userland-assembly,userland>> and <<baremetal-setup,baremetal>> assembly. <<gdb>> and <<kgdb>> just work. Powered by <<about-the-qemu-buildroot-setup,Buildroot>> and <<about-the-baremetal-setup,crosstool-NG>>. Highly automated. Thoroughly documented. Automated <<test-this-repo,tests>>. "Tested" in an Ubuntu 18.04 host.
TL;DR: <<qemu-buildroot-setup-getting-started>>
@@ -373,7 +373,7 @@ Have you ever felt that a single `inc` instruction was not enough? Really? Me to
So let's hack the <<gnu-gas-assembler>>, which is part of link:https://en.wikipedia.org/wiki/GNU_Binutils[GNU Binutils], to add a new shiny version of `inc` called... `myinc`!
GCC uses GNU GAS as its backend, so we will test out new mnemonic with an inline assembly test program: link:userland/arch/x86_64/binutils_hack.c[], which is just a copy of link:userland/arch/x86_64/asm_hello.c[] but with `myinc` instead of `inc`.
GCC uses GNU GAS as its backend, so we will test out new mnemonic with an <<gcc-inline-assembly>> test program: link:userland/arch/x86_64/binutils_hack.c[], which is just a copy of link:userland/arch/x86_64/asm_hello.c[] but with `myinc` instead of `inc`.
The inline assembly is disabled with an `#ifdef`, so first modify the source to enable that.
@@ -955,7 +955,7 @@ Notable userland content included / moving into this repository includes:
* <<c>>
* <<cpp>>
* <<posix>>
* https://github.com/cirosantilli/algorithm-cheat will be good to move here for performance analysis
* https://github.com/cirosantilli/algorithm-cheat TODO will be good to move here for performance analysis <<gem5-run-benchmark,with gem5>>
==== Userland setup getting started
@@ -11685,7 +11685,7 @@ corresponding register field is interpreted as returning zero when read or disca
When instructions do not interpret this operand encoding as the zero register, use of the name XZR is an error
____
=== Assembly SIMD
=== SIMD assembly
Much like ADD for non-SIMD, start learning SIMD instructions by looking at the integer and floating point SIMD ADD instructions of each ISA:
@@ -11980,7 +11980,7 @@ Some of the differences include:
When reading disassembly, many instructions have either a `.n` or `.w` suffix.
`.n` means narrow, and stands for the Thumb encoding of an instructions, while `.w` means wide and stands for the ARM encoding.
`.n` means narrow, and stands for the <<arm-instruction-encodings,Thumb encoding>> of an instructions, while `.w` means wide and stands for the ARM encoding.
Bibliography: https://stackoverflow.com/questions/27147043/n-suffix-to-branch-instruction
@@ -12145,7 +12145,7 @@ Understanding the basics of instruction encodings is fundamental to help you to
aarch32 has two "instruction sets", which to look just like encodings.
Some control bit determines which one we are currently on, and userland can switch between them with the <<arm-bx-instruction>>.
Some control bit must determine which one we are currently on, and userland can switch between them with the <<arm-bx-instruction>> TODO: details.
The encodings are:
@@ -12154,6 +12154,8 @@ The encodings are:
+
T stands for "Thumb", which is the original name for the technology. The word "Thumb" does not appear on <<armarm8>> however. It does appear on <<armarm7>> though.
+
Example: link:userland/arch/arm/thumb.S[]
+
See also: <<armarm8>> F2.1.3 "Instruction encodings".
Within each instruction set, there can be multiple encodings for a given function, and they are noted simply as:
@@ -12188,7 +12190,10 @@ TODO: what to do if we want to jump longer than that?
Branch if equal based on the status registers.
Example: link:userland/arch/arm/beq.S[].
Examples:
* link:userland/arch/arm/beq.S[].
* link:userland/arch/aarch64/beq.S[].
The family of instructions includes:
@@ -12217,13 +12222,13 @@ The current ARM / Thumb mode is encoded in the least significant bit of lr.
Since `bl` encodes the current ARM / Thumb in the register, `bx` keeps the mode unchanged by default.
===== ARM ret instruction
===== ARMv8 aarch64 ret instruction
Example: link:userland/arch/aarch64/ret.S[]
In ARMv8 aarch64:
ARMv8 AArch64 only:
* there is no `bx` since no Thumb to worry about, so it is called just `br`
* there is no `bx` in AArch64 since no Thumb to worry about, so it is called just `br`
* the `ret` instruction was added in addition to `br`, with the following differences:
** provides a hint that this is a function call return
** has a default argument `x30` if none is given. This is where `bl` puts the return value.
@@ -12388,8 +12393,6 @@ AArch64 loses those instructions, likely because it was not possible anymore to
Arithmetic:
* link:userland/arch/arm/add.S[]. We use this simple instruction to explain syntax common to most data processing instructions, so have a good look at that file.
** link:userland/arch/aarch64/add.S[]
* link:userland/arch/arm/mul.S[]: multiply
* link:userland/arch/arm/sub.S[]: subtract
* link:userland/arch/arm/rbit.S[]: reverse bit order
@@ -12589,6 +12592,18 @@ Bibliography: https://stackoverflow.com/questions/1875491/nop-for-iphone-binarie
=== ARM SIMD
==== ARM fadd vs vadd
It is very confusing, but `fadds` and `faddd` in Aarch32 are <<gnu-gas-assembler-arm-unified-syntax,pre-UAL>> for `vadd.f32` and `vadd.f64`.
The same goes for most ARMv7 mnemonics: `f*` is old, and `v*` is the newer better syntax.
But then, in ARMv8, they decided to use `fadd` as the main floating point add name, and get rid of `vadd`!
Also keep in mind that fused multiply add is `fmadd`.
Examples at: <<simd-assembly>>
==== ARM SIMD instructions
===== ARM vcvt instruction

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userland/arch/aarch64/add.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-processing-instructions */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#userland-assembly */
#include "common.h"

2
userland/arch/aarch64/add_vector.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#assembly-simd
/* https://github.com/cirosantilli/linux-kernel-module-cheat#simd-assembly
*
* Add a bunch of integers in one go.
*/

2
userland/arch/aarch64/adr.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#adr */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-adr-instruction */
#include "common.h"

2
userland/arch/aarch64/adrp.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#adr */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-adr-instruction */
#include "common.h"

2
userland/arch/aarch64/beq.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#cbz */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-beq-instruction */
#include "common.h"

2
userland/arch/aarch64/bfi.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#bfi */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-bfi-instruction */
#include "common.h"

2
userland/arch/aarch64/c/earlyclobber.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-early-clobbers */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-early-clobbers */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/aarch64/c/inc.c
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@@ -1,6 +1,6 @@
/* Increment a variable in inline assembly.
*
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly
*/
#include <assert.h>

2
userland/arch/aarch64/c/inc_float.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-floating-point-arm */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-floating-point-arm */
#include <assert.h>

2
userland/arch/aarch64/c/reg_var.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-register-variables */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-register-variables */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/aarch64/c/reg_var_float.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-register-variables */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-register-variables */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/aarch64/cbz.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#cbz */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-cbz-instruction */
#include "common.h"

2
userland/arch/aarch64/cset.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#cset */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-cset-instruction */
#include "common.h"

2
userland/arch/aarch64/fadd_vector.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#assembly-simd
/* https://github.com/cirosantilli/linux-kernel-module-cheat#simd-assembly
*
* Add a bunch of floating point numbers in one go.
*/

2
userland/arch/aarch64/gas_data_sizes.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gas-data-sizes */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gnu-gas-assembler data sizes */
#include "common.h"

7
userland/arch/aarch64/hello_driver.S
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@@ -1,7 +0,0 @@
/* MInimal sanity check of the C driver. */
.text
.global asm_main
asm_main:
asm_main_after_prologue:
mov w0, 0
ret

2
userland/arch/aarch64/movk.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#movk */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-movk-instruction */
#include "common.h"

2
userland/arch/aarch64/movn.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#movn */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-movn-instruction */
#include "common.h"

2
userland/arch/aarch64/ret.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#bl */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-ret-instruction */
#include "common.h"

2
userland/arch/aarch64/simd_interleave.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#simd-interleaving */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-simd-interleaving */
#include "common.h"

2
userland/arch/aarch64/str.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-str */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-str-instruction */
#include "common.h"

2
userland/arch/aarch64/ubfm.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ubfm */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ubfm-instruction */
#include "common.h"

2
userland/arch/aarch64/ubfx.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ubfx */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ubfx-instruction */
#include "common.h"

2
userland/arch/aarch64/x31.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#x31 */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#armv8-aarch64-x31-register */
#include "common.h"

2
userland/arch/arm/add.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-processing-instructions */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions */
#include "common.h"

2
userland/arch/arm/address_modes.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#addressing-modes */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-addressing-modes */
#include "common.h"

2
userland/arch/arm/adr.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#adr */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-adr-instruction */
#include "common.h"

2
userland/arch/arm/and.S
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@@ -1,4 +1,4 @@
/* Bitwise AND. */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-bitwise-instructions */
#include "common.h"

2
userland/arch/arm/b.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#b */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-b-instruction */
#include "common.h"
ENTRY

2
userland/arch/arm/beq.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#beq */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-beq-instruction */
#include "common.h"

2
userland/arch/arm/bfi.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#bfi */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-bfi-instruction */
#include "common.h"

2
userland/arch/arm/bic.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#bic */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-bic-instruction */
#include "common.h"

2
userland/arch/arm/bl.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#bl */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-bl-instruction */
#include "common.h"

2
userland/arch/arm/c/add.c
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@@ -1,6 +1,6 @@
/* 1 + 2 == 3
*
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly
*/
#include <assert.h>

5
userland/arch/arm/c/freestanding/linux/hello.c
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@@ -1,5 +1,6 @@
/* arm freestanding C inline assemby Linux hello world
* https://github.com/cirosantilli/linux-kernel-module-cheat#linux-system-calls
/* https://github.com/cirosantilli/linux-kernel-module-cheat#linux-system-calls
*
* arm freestanding C inline assemby Linux hello world.
*/
#include <inttypes.h>

2
userland/arch/arm/c/inc.c
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@@ -1,6 +1,6 @@
/* Increment a variable in inline assembly.
*
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly
*/
#include <assert.h>

2
userland/arch/arm/c/inc_float.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-floating-point-arm */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-floating-point-arm */
#include <assert.h>

2
userland/arch/arm/c/inc_memory.c
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@@ -14,7 +14,7 @@
* ldr r0, [sp]
* ....
*
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly
*/
#include <assert.h>

2
userland/arch/arm/c/inc_memory_global.c
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@@ -6,7 +6,7 @@
* ldr r0, [r3]
* ....
*
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly
*/
#include <assert.h>

2
userland/arch/arm/c/reg_var.c
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-register-variables */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-register-variables */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/arm/clz.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-processing-instructions */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-bitwise-instructions */
#include "common.h"

2
userland/arch/arm/cond.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#conditional-execution */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-conditional-execution */
#include "common.h"

2
userland/arch/arm/gas_data_sizes.S
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@@ -1,3 +1,5 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gnu-gas-assembler data sizes */
#include "common.h"
.data

23
userland/arch/arm/hello_driver.S
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@@ -1,23 +0,0 @@
/* Minimal example using driver.
*
* Controls the exit status of the program.
*/
.syntax unified
.text
.global asm_main
asm_main:
asm_main_after_prologue:
/* Set the return value according to the ARM calling convention. */
mov r0, 0
/* Try some whacky value to see tests break. */
/*mov r0, 77*/
/* Branch to the address at register lr.
* That is the return value which was put there by the C driver (likely with a bl).
*
* X means eXchange encoding from thumb back to ARM, which is what the driver uses.
*/
bx lr

2
userland/arch/arm/immediates.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gnu-gas-assembler-immediates */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-gnu-instruction-gas-assembler-immediates */
#include "common.h"

2
userland/arch/arm/inc_array.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#loop-over-array */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-loop-instruction-over-array */
#include "common.h"

2
userland/arch/arm/ldmia.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#loop-over-array */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-loop-instruction-over-array */
#include "common.h"

2
userland/arch/arm/ldr_pseudo.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ldr-pseudo-instruction */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ldr-instruction-pseudo-instruction */
#include "common.h"

2
userland/arch/arm/ldrb.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ldrh-and-ldrb */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ldrh-instruction-and-ldrb */
#include "common.h"

2
userland/arch/arm/ldrh.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ldrh-and-ldrb */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ldrh-instruction-and-ldrb */
#include "common.h"

2
userland/arch/arm/mov.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#mov */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-mov-instruction */
#include "common.h"

2
userland/arch/arm/movw.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#movw-and-movt */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-movw-and-movt-instructions */
#include "common.h"

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userland/arch/arm/mul.S
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@@ -1,4 +1,7 @@
/* Multiplication. */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
*
* Multiplication.
*/
#include "common.h"

2
userland/arch/arm/nop.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#nop */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-nop-instruction */
#include "common.h"

2
userland/arch/arm/push.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#ldmia */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-ldmia-instruction */
#include "common.h"

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userland/arch/arm/rbit.S
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@@ -1,4 +1,7 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#rbit */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
*
* Reverse bit order.
*/
#include "common.h"

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userland/arch/arm/rev.S
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@@ -1,4 +1,7 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-processing-instructions */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#data-processing-instructions
*
* Reverse byte order.
*/
#include "common.h"

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userland/arch/arm/s_suffix.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#s-suffix */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-s-suffix */
#include "common.h"

2
userland/arch/arm/shift.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#shift-suffixes */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-shift-suffixes */
#include "common.h"

5
userland/arch/arm/sub.S
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/* Subtraction. */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
*
* Subtraction.
*/
#include "common.h"

6
userland/arch/arm/thumb.S
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/* Illustrates features that are only available in thumb. */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-instruction-encodings
*
* Illustrates features that are only available in thumb.
* TODO ensure that we are actually inside of thumb.
*/
.syntax unified
.text

5
userland/arch/arm/tst.S
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/* Test. Same as ands, but don't store the result, just update flags. */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-data-processing-instructions
*
* Test. Same as ands, but don't store the result, just update flags.
*/
#include "common.h"

2
userland/arch/arm/vadd.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#assembly-simd */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-simd-instruction-assembly */
#include "common.h"

2
userland/arch/arm/vcvt.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#vcvt */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-vcvt-instruction */
#include "common.h"

2
userland/arch/arm/vcvta.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#vcvta */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-vcvta-instruction */
#include "common.h"

2
userland/arch/arm/vcvtr.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#vcvtrr */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-vcvtrr-instruction */
#include "common.h"

2
userland/arch/x86_64/c/add.c
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/x86_64/c/inc.c
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/x86_64/c/scratch.c
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-scratch-registers */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-scratch-registers */
#include <assert.h>
#include <inttypes.h>

2
userland/arch/x86_64/c/scratch_hardcode.c
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/* This is a worse version of scratch.c with hardcoded scratch.
* https://github.com/cirosantilli/linux-kernel-module-cheat#inline-assembly-scratch-registers
* https://github.com/cirosantilli/linux-kernel-module-cheat#gcc-inline-assembly-scratch-registers
*/
#include <assert.h>

2
userland/arch/x86_64/gas_data_sizes.S
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/* https://github.com/cirosantilli/linux-kernel-module-cheat#gas-data-sizes */
/* https://github.com/cirosantilli/linux-kernel-module-cheat#gnu-gas-assembler data sizes */
#include "common.h"

2
userland/arch/x86_64/paddq.S
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@@ -1,4 +1,4 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#assembly-simd
/* https://github.com/cirosantilli/linux-kernel-module-cheat#simd-assembly
*
* Add a bunch of integers in one go.
*