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2010-12-29 Sebastian Huber <sebastian.huber@embedded-brains.de>

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* mpc55xx/include/mpc55xx.h, mpc55xx/misc/copy.S: Removed zero
	functions.
This commit is contained in:
Sebastian Huber
2010-12-29 10:45:33 +00:00
parent 644448f840
commit ef8dff0531
3 changed files with 3 additions and 150 deletions
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2
c/src/lib/libcpu/powerpc/ChangeLog
View File

@@ -13,6 +13,8 @@
e200 exception vector defines. Added e500 exception vector defines.
Unified IVOR calculation for e200 and e500 (e200z1 has hard wired
IVOR values).
* mpc55xx/include/mpc55xx.h, mpc55xx/misc/copy.S: Removed zero
functions.
2010-12-23 Sebastian Huber <sebastian.huber@embedded-brains.de>

6
c/src/lib/libcpu/powerpc/mpc55xx/include/mpc55xx.h
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@@ -46,12 +46,6 @@
/* Defined in copy.S */
int mpc55xx_copy_8( const void *src, void *dest, size_t n);
/* Defined in copy.S */
int mpc55xx_zero_8( void *dest, size_t n);
/* Defined in copy.S */
int mpc55xx_zero_32( void *dest, size_t n);
/* Defined in fmpll.S */
void mpc55xx_fmpll_reset_config();

145
c/src/lib/libcpu/powerpc/mpc55xx/misc/copy.S
View File

@@ -3,7 +3,7 @@
*
* @ingroup mpc55xx_asm
*
* @brief Memory copy and zero functions.
* @brief Memory copy functions.
*/
/*
@@ -78,146 +78,3 @@ copy_data:
/* Return */
blr
#endif /*!((MPC55XX_CHIP_TYPE>=5510) && (MPC55XX_CHIP_TYPE<=5517))*/
/**
* @fn int mpc55xx_zero_4( void *dest, size_t n)
*
* @brief Zero all @a n bytes starting at @a dest with 4 byte writes.
*
* The address @a dest has to be aligned on 4 byte boundaries. The size @a n
* must be evenly divisible by 4. No SPE operations are used.
*/
#if ((MPC55XX_CHIP_TYPE>=5510) && (MPC55XX_CHIP_TYPE<=5517))
GLOBAL_FUNCTION mpc55xx_zero_32
GLOBAL_FUNCTION mpc55xx_zero_8
#endif /* ((MPC55XX_CHIP_TYPE>=5510) && (MPC55XX_CHIP_TYPE<=5517)) */
GLOBAL_FUNCTION mpc55xx_zero_4
/* Create zero */
xor r0, r0, r0
/* Loop counter for the first bytes up to 16 bytes */
rlwinm. r9, r4, 29, 30, 31
beq zero_more4
mtctr r9
xor r5,r5,r5
zero_data4:
stwx r0, r5, r3
addi r5, r5, 4
bdnz zero_data4
zero_more4:
/* More than 16 bytes? */
srwi. r9, r4, 4
beqlr
mtctr r9
zero_big_data4:
stw r0, 0(r3)
stw r0, 4(r3)
stw r0, 8(r3)
stw r0, 12(r3)
addi r3, r3, 16
bdnz zero_big_data4
/* Return */
blr
#if !((MPC55XX_CHIP_TYPE>=5510) && (MPC55XX_CHIP_TYPE<=5517))
/**
* @fn int mpc55xx_zero_8( void *dest, size_t n)
*
* @brief Zero all @a n bytes starting at @a dest with 8 byte writes.
*
* The address @a dest has to be aligned on 8 byte boundaries. The size @a n
* must be evenly divisible by 8. The SPE operations @b evxor and @b evstddx will be used.
*/
GLOBAL_FUNCTION mpc55xx_zero_8
/* Create zero */
evxor r0, r0, r0
/* Set offset */
evxor r5, r5, r5
/* Loop counter for the first bytes up to 32 bytes */
rlwinm. r9, r4, 29, 30, 31
beq zero_more
mtctr r9
zero_data:
evstddx r0, r3, r5
addi r5, r5, 8
bdnz zero_data
zero_more:
/* More than 32 bytes? */
srwi. r9, r4, 5
beqlr
mtctr r9
/* Set offsets */
addi r6, r5, 8
addi r7, r5, 16
addi r8, r5, 24
zero_big_data:
evstddx r0, r3, r5
addi r5, r5, 32
evstddx r0, r3, r6
addi r6, r6, 32
evstddx r0, r3, r7
addi r7, r7, 32
evstddx r0, r3, r8
addi r8, r8, 32
bdnz zero_big_data
/* Return */
blr
/**
* @fn int mpc55xx_zero_32( void *dest, size_t n)
*
* @brief Zero all @a n bytes starting at @a dest with 32 byte writes.
*
* The address @a dest has to be aligned on 32 byte boundaries. The size @a n
* must be evenly divisible by 32. The function operates with the cache block zero
* operation @b dcbz.
*
* @note The cache has to be enabled for the desired memory area.
*/
GLOBAL_FUNCTION mpc55xx_zero_32
/* Set offset */
xor r5, r5, r5
/* Loop counter for the first bytes up to 128 bytes */
rlwinm. r9, r4, 27, 28, 31
beq zero_more_lines
mtctr r9
zero_line:
dcbz r3, r5
addi r5, r5, 32
bdnz zero_line
zero_more_lines:
/* More than 128 bytes? */
srwi. r9, r4, 7
beqlr
mtctr r9
/* Set offsets */
addi r6, r5, 32
addi r7, r5, 64
addi r8, r5, 96
zero_big_line:
dcbz r3, r5
addi r5, r5, 128
dcbz r3, r6
addi r6, r6, 128
dcbz r3, r7
addi r7, r7, 128
dcbz r3, r8
addi r8, r8, 128
bdnz zero_big_line
/* Return */
blr
#endif /* !((MPC55XX_CHIP_TYPE>=5510) && (MPC55XX_CHIP_TYPE<=5517)) */