mirror of
https://github.com/cirosantilli/linux-kernel-module-cheat.git
synced 2026-01-26 19:51:35 +01:00
62571fa649
Was doing an 8-byte aligned store, which gem5 dislikes. But the ARMARM says bad things may happen there, notably a signal: "D1.8.2 SP alignment checking" so gem5 is not really too wrong, QEMU just happens to work by chance.
84 lines
1.6 KiB
C
84 lines
1.6 KiB
C
/* https://github.com/cirosantilli/linux-kernel-module-cheat#userland-assembly-c-standard-library */
|
|
|
|
#ifndef COMMON_ARCH_H
|
|
#define COMMON_ARCH_H
|
|
|
|
#define ASSERT_EQ(reg, const) \
|
|
mov x0, reg; \
|
|
ldr x1, =const; \
|
|
ASSERT_EQ_DO(64); \
|
|
;
|
|
|
|
#define ASSERT_EQ_DO(bits) \
|
|
bl assert_eq_ ## bits; \
|
|
cmp x0, 0; \
|
|
ASSERT(beq); \
|
|
;
|
|
|
|
#define ASSERT_EQ_REG(reg1, reg2) \
|
|
str reg2, [sp, -16]!; \
|
|
mov x0, reg1; \
|
|
ldr x1, [sp], 16; \
|
|
ASSERT_EQ_DO(64); \
|
|
;
|
|
|
|
#define ASSERT_EQ_REG_32(reg1, reg2) \
|
|
str reg2, [sp, -4]!; \
|
|
mov w0, reg1; \
|
|
ldr w1, [sp], 4; \
|
|
ASSERT_EQ_DO(32); \
|
|
;
|
|
|
|
#define ASSERT_MEMCMP(label1, label2, const_size) \
|
|
adr x0, label1; \
|
|
adr x1, label2; \
|
|
ldr x2, =const_size; \
|
|
bl assert_memcmp; \
|
|
cmp x0, 0; \
|
|
ASSERT(beq); \
|
|
;
|
|
|
|
#define ENTRY \
|
|
.text; \
|
|
.global asm_main; \
|
|
asm_main: \
|
|
sub sp, sp, 0xA0; \
|
|
stp x29, x30, [sp]; \
|
|
stp x27, x28, [sp, 0x10]; \
|
|
stp x25, x26, [sp, 0x20]; \
|
|
stp x23, x24, [sp, 0x30]; \
|
|
stp x21, x22, [sp, 0x40]; \
|
|
stp x19, x20, [sp, 0x50]; \
|
|
stp x6, x7, [sp, 0x60]; \
|
|
stp x4, x5, [sp, 0x70]; \
|
|
stp x2, x3, [sp, 0x80]; \
|
|
stp x0, x1, [sp, 0x90]; \
|
|
asm_main_after_prologue: \
|
|
;
|
|
|
|
#define EXIT \
|
|
mov w0, 0; \
|
|
mov w1, 0; \
|
|
b pass; \
|
|
fail: \
|
|
ldr x1, [sp, 0x90]; \
|
|
str w0, [x1]; \
|
|
mov w0, 1; \
|
|
pass: \
|
|
ldp x19, x20, [sp, 0x50]; \
|
|
ldp x21, x22, [sp, 0x40]; \
|
|
ldp x23, x24, [sp, 0x30]; \
|
|
ldp x25, x26, [sp, 0x20]; \
|
|
ldp x27, x28, [sp, 0x10]; \
|
|
ldp x29, x30, [sp]; \
|
|
add sp, sp, 0xA0; \
|
|
ret; \
|
|
;
|
|
|
|
#define FAIL \
|
|
ldr w0, =__LINE__; \
|
|
b fail; \
|
|
;
|
|
|
|
#endif
|