Programming gas "pseudo ops"

[torshie]

When I tried to rewrite my interrupt handlers, I found that writing gas "pseudo ops" is in fact very interesting. gas "pseudo ops" is much like a functional programming language, I don't know whether it's Turing complete

gas "pseudo ops" reference: http://sourceware.org/binutils/docs/as/ ... Pseudo-Ops

Here is how I implemented my 32 interrupt handlers(SAVE_GENERIC_REGISTER is 16 push instructions, LOAD_GENERIC_REGISTER is 16 pop instructions):

Code: Select all

#include <asm/LOAD_GENERIC_REGISTER.macro>
#include <asm/SAVE_GENERIC_REGISTER.macro>

.altmacro

.macro DEFINE_ISR isrNumber
	isr\isrNumber:
		cli
		SAVE_GENERIC_REGISTER
		mov $\isrNumber, %rdi
		/* Mangled ::kernel::InterruptDescriptorTable::handle */
		call _ZN6kernel24InterruptDescriptorTable6handleEi
		LOAD_GENERIC_REGISTER
		sti
		iretq
.endm

.macro FOR from, to, action
	action \from
	.if \to - \from
		FOR %(\from + 1), \to, action
	.endif
.endm

.macro SET_ISR_ENTRY param
	.quad isr\param
.endm

.macro CREATE_ISR_TABLE size, tableName
	.section .text
		FOR 0, %(\size - 1), DEFINE_ISR
	.section .data
	.global \tableName
	.align 8
	\tableName:
		FOR 0, %(\size - 1), SET_ISR_ENTRY
.endm

CREATE_ISR_TABLE 32, isrAddressTable