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// Common macros & helpers for Linux AArch64 syscalls
.extern write_all
.macro SYSCALL num
mov x8, \num
svc #0
.endm
.macro WRITE fd, ptr, len
mov x0, \fd
mov x1, \ptr
mov x2, \len
SYSCALL SYS_write
.endm
.macro EXIT code
mov x0, \code
SYSCALL SYS_exit
.endm
.macro LOG msg_ptr, msg_len
stp x0, x1, [sp, #-16]!
stp x2, x3, [sp, #-16]!
str x30, [sp, #-16]!
adrp x3, g_verbose
add x3, x3, :lo12:g_verbose
ldr x3, [x3]
cbz x3, .Llog_done\@
bl get_timestamp_ptr
mov x1, x0
mov x0, #2
mov x2, #18
bl write_all
mov x0, #2
adrp x1, \msg_ptr
add x1, x1, :lo12:\msg_ptr
mov x2, #\msg_len
bl write_all
// newline (keep stack 16-byte aligned)
sub sp, sp, #16
mov w4, #'\n'
strb w4, [sp]
mov x0, #2
mov x1, sp
mov x2, #1
bl write_all
add sp, sp, #16
.Llog_done\@:
ldr x30, [sp], #16
ldp x2, x3, [sp], #16
ldp x0, x1, [sp], #16
.endm
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