Reducing source code: weak+alias values in array

[Jens Bauer via Digitalmars-d-learn]

I was wondering if there's a way to reduce my bulky startup files 
a bit.

If using the GNU Assembler (GAS), then one can reduce the code 
using a macro like this:


/* The EXC macro makes a weak+alias for the
 * symbol 'value', then it stores the value in memory: */
        .macro          EXC     value,defaultValue
        .ifnb           \defaultValue
        .weakref        \value,\defaultValue
        .else
        .weakref        \value,defaultExceptionVector
        .endif
        .4byte          \value
        .endm


/* The exception vector now looks quite simple: */
isr_vector:
        .4byte          _stack
        EXC             Reset_Handler,defaultResetHandler
        EXC             NMI_Handler
        EXC             HardFault_Handler
        EXC             MemManage_Handler
        EXC             BusFault_Handler
        EXC             UsageFault_Handler
        .4byte          0
        .4byte          0
        .4byte          0
        .4byte          0
        EXC             SVC_Handler
        EXC             DebugMon_Handler
        .4byte          0
        EXC             PendSV_Handler
        EXC             SysTick_Handler

An example on one of my bulky startup files:
https://github.com/jens-gpio/MCU/blob/master/startup/stm/stm32f439_startup.d

I was thinking about alias (Tuple) or similar, but I'm not sure 
it would work if not declaring the label weak+alias in advance. 
Any thoughts ?
(Other suggestions on how to reduce the source code size are also 
welcome).