diff --git a/xen/arch/arm/arm32/head.S b/xen/arch/arm/arm32/head.S index 8b4c8a4714..b54331c19d 100644 --- a/xen/arch/arm/arm32/head.S +++ b/xen/arch/arm/arm32/head.S @@ -64,15 +64,20 @@ * r14 - LR * r15 - PC */ -/* Macro to print a string to the UART, if there is one. - * Clobbers r0-r3. */ #ifdef CONFIG_EARLY_PRINTK -#define PRINT(_s) \ - adr r0, 98f ; \ - bl puts ; \ - b 99f ; \ -98: .asciz _s ; \ - .align 2 ; \ +/* + * Macro to print a string to the UART, if there is one. + * + * Clobbers r0 - r3 + */ +#define PRINT(_s) \ + mov r3, lr ;\ + adr r0, 98f ;\ + bl puts ;\ + mov lr, r3 ;\ + b 99f ;\ +98: .asciz _s ;\ + .align 2 ;\ 99: #else /* CONFIG_EARLY_PRINTK */ #define PRINT(s) @@ -500,10 +505,8 @@ init_uart: #ifdef EARLY_PRINTK_INIT_UART early_uart_init r11, r1, r2 #endif - adr r0, 1f - b puts /* Jump to puts */ -1: .asciz "- UART enabled -\r\n" - .align 4 + PRINT("- UART enabled -\r\n") + mov pc, lr /* * Print early debug messages.