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asm: make use regular asserts that will just work on baremetal

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Previously had wonky line pointer in asm_main. New interface simpler and more portable.

Add tests for ASSERT_EQ_ and family in arm and aarch64, previously on x86_64.

ASSERT_EQ_ and family in ARM can now either take =123, =addr or var, before this
the = was added on macros so var was not possible.

Define the main function directly in assembly, the C driver was useless.
This commit is contained in:
Ciro Santilli 六四事件 法轮功
2019-05-23 00:00:00 +00:00
parent 72200dee4e
commit c8c4f89854
90 changed files with 1003 additions and 978 deletions
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22
userland/arch/arm/address_modes.S
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@@ -1,37 +1,37 @@
/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-addressing-modes */
#include "common.h"
#include <lkmc.h>
LKMC_ENTRY
LKMC_PROLOGUE
/* Offset mode with immediate. Add 4 to the address register,
* which ends up * reading myvar6 instead of myvar.
*/
adr r4, myvar
ldr r5, [r4, 4]
LKMC_ASSERT_EQ(r5, 0x9ABCDEF0)
LKMC_ASSERT_EQ(r5, =0x9ABCDEF0)
/* r4 was not modified. */
LKMC_ASSERT_EQ(r4, myvar)
LKMC_ASSERT_EQ(r4, =myvar)
/* Pre-indexed mode: modify register, then use it. */
adr r4, myvar
ldr r5, [r4, 4]!
LKMC_ASSERT_EQ(r5, 0x9ABCDEF0)
LKMC_ASSERT_EQ(r5, =0x9ABCDEF0)
/* r4 was modified. */
LKMC_ASSERT_EQ(r4, myvar6)
LKMC_ASSERT_EQ(r4, =myvar6)
/* Post-indexed mode: use register, then modify it. */
adr r4, myvar
ldr r5, [r4], 4
LKMC_ASSERT_EQ(r5, 0x12345678)
LKMC_ASSERT_EQ(r5, =0x12345678)
/* r4 was modified. */
LKMC_ASSERT_EQ(r4, myvar6)
LKMC_ASSERT_EQ(r4, =myvar6)
/* Offset in register. */
adr r4, myvar
mov r5, 4
ldr r6, [r4, r5]
LKMC_ASSERT_EQ(r6, 0x9ABCDEF0)
LKMC_ASSERT_EQ(r6, =0x9ABCDEF0)
/* Offset in shifted register:
* r6 =
@@ -42,9 +42,9 @@ LKMC_ENTRY
adr r4, myvar
mov r5, 2
ldr r6, [r4, r5, lsl 1]
LKMC_ASSERT_EQ(r6, 0x9ABCDEF0)
LKMC_ASSERT_EQ(r6, =0x9ABCDEF0)
LKMC_EXIT
LKMC_EPILOGUE
myvar:
.word 0x12345678
myvar6: