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

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.

lkmc/arm.h

@@ -0,0 +1,53 @@
+#ifndef LKMC_ARM_H
+#define LKMC_ARM_H
+
+#if defined(__ASSEMBLER__)
+.syntax unified
+#endif
+
+#define LKMC_ASSERT_EQ(reg, const) \
+    mov r0, reg; \
+    ldr r1, const; \
+    ldr r2, =__LINE__; \
+    bl lkmc_assert_eq_32; \
+;
+
+#define LKMC_ASSERT_EQ_REG(reg1, reg2) \
+    str reg2, [sp, -4]!; \
+    mov r0, reg1; \
+    ldr r1, [sp], 4; \
+    ldr r2, =__LINE__; \
+    bl lkmc_assert_eq_32; \
+;
+
+#define LKMC_ASSERT_FAIL \
+    ldr r0, =__LINE__; \
+    bl lkmc_assert_fail; \
+;
+
+#define LKMC_ASSERT_MEMCMP(label1, label2, size) \
+    ldr r0, =label1; \
+    ldr r1, =label2; \
+    ldr r2, size; \
+    ldr r3, =__LINE__; \
+    bl lkmc_assert_memcmp; \
+;
+
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-calling-convention */
+#define LKMC_EPILOGUE \
+    add sp, 16; \
+    ldmia sp!, {r4-r12, lr}; \
+    mov r0, 0; \
+    bx lr; \
+;
+
+/* https://github.com/cirosantilli/linux-kernel-module-cheat#arm-calling-convention */
+#define LKMC_PROLOGUE \
+.text; \
+.global main; \
+main: \
+    stmdb sp!, {r0-r12, lr}; \
+main_after_prologue: \
+;
+
+#endif