linux/include/asm-sh/entry-macros.S

! entry.S macro define
	
	.macro	cli
	stc	sr, r0
	or	#0xf0, r0
	ldc	r0, sr
	.endm

	.macro	sti
	mov	#0xf0, r11
	extu.b	r11, r11
	not	r11, r11
	stc	sr, r10
	and	r11, r10
#ifdef CONFIG_HAS_SR_RB
	stc	k_g_imask, r11
	or	r11, r10
#endif
	ldc	r10, sr
	.endm

	.macro	get_current_thread_info, ti, tmp
#ifdef CONFIG_HAS_SR_RB
	stc	r7_bank, \ti
#else
	mov	#((THREAD_SIZE - 1) >> 10) ^ 0xff, \tmp
	shll8	\tmp
	shll2	\tmp
	mov	r15, \ti
	and	\tmp, \ti
#endif	
	.endm
sh: Add SH-2A platform headers. Mostly SH-2 wrappers.. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2006-11-05 07:18:08 +00:00			`! entry.S macro define`

			`.macro cli`
			`stc sr, r0`
			`or #0xf0, r0`
			`ldc r0, sr`
			`.endm`

			`.macro sti`
			`mov #0xf0, r11`
			`extu.b r11, r11`
			`not r11, r11`
			`stc sr, r10`
			`and r11, r10`
			`#ifdef CONFIG_HAS_SR_RB`
			`stc k_g_imask, r11`
			`or r11, r10`
			`#endif`
			`ldc r10, sr`
			`.endm`

			`.macro get_current_thread_info, ti, tmp`
			`#ifdef CONFIG_HAS_SR_RB`
			`stc r7_bank, \ti`
			`#else`
sh: Fixup various PAGE_SIZE == 4096 assumptions. There were a number of places that made evil PAGE_SIZE == 4k assumptions that ended up breaking when trying to play with 8k and 64k page sizes, this fixes those up. The most significant change is the way we load THREAD_SIZE, previously this was done via: mov #(THREAD_SIZE >> 8), reg shll8 reg to avoid a memory access and allow the immediate load. With a 64k PAGE_SIZE, we're out of range for the immediate load size without resorting to special instructions available in later ISAs (movi20s and so on). The "workaround" for this is to bump up the shift to 10 and insert a shll2, which gives a bit more flexibility while still being much cheaper than a memory access. Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2006-11-27 03:06:26 +00:00			`mov #((THREAD_SIZE - 1) >> 10) ^ 0xff, \tmp`
sh: Add SH-2A platform headers. Mostly SH-2 wrappers.. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2006-11-05 07:18:08 +00:00			`shll8 \tmp`
sh: Fixup various PAGE_SIZE == 4096 assumptions. There were a number of places that made evil PAGE_SIZE == 4k assumptions that ended up breaking when trying to play with 8k and 64k page sizes, this fixes those up. The most significant change is the way we load THREAD_SIZE, previously this was done via: mov #(THREAD_SIZE >> 8), reg shll8 reg to avoid a memory access and allow the immediate load. With a 64k PAGE_SIZE, we're out of range for the immediate load size without resorting to special instructions available in later ISAs (movi20s and so on). The "workaround" for this is to bump up the shift to 10 and insert a shll2, which gives a bit more flexibility while still being much cheaper than a memory access. Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2006-11-27 03:06:26 +00:00			`shll2 \tmp`
sh: Add SH-2A platform headers. Mostly SH-2 wrappers.. Signed-off-by: Yoshinori Sato <ysato@users.sourceforge.jp> Signed-off-by: Paul Mundt <lethal@linux-sh.org> 2006-11-05 07:18:08 +00:00			`mov r15, \ti`
			`and \tmp, \ti`
			`#endif`
			`.endm`