From: Tim Lai <tinglai@gmail.com>
To: linux-mips@linux-mips.org
Subject: problem with prefetch in user space
Date: Tue, 17 Aug 2004 19:34:41 -0400 [thread overview]
Message-ID: <e2eac65704081716345c78b7c6@mail.gmail.com> (raw)
I am trying to use prefetch in user space. I am using mips_fp_be-gcc
version 3.2.1,
and the kernel is MontaVista 2.4 kernel.
I have a C program with the fellowing function:
inline void mips_prefetch(void *addr)
{
__asm__ __volatile__(
".set push \n"
".set noreorder \n"
".set noat \n"
".set mips4 \n"
" pref 4 , 0(%0) \n"
".set pop \n");
return;
}
When I compile with gcc,
/tmp/ccMHaOOf.s: Assembler messages:
/tmp/ccMHaOOf.s:5479: Error: illegal operands `pref'
make: *** [foo.o] Error 1
I tried add -mips4 option in gcc, it got even worst,
/tmp/ccN6Xs81.s: Assembler messages:
/tmp/ccN6Xs81.s:54: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:55: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:128: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:129: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:171: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:223: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:224: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:420: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:421: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:698: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:776: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:801: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:815: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:857: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:858: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:913: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1308: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1377: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1402: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1424: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1462: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:1497: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:1498: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:1953: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:1954: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:2023: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2092: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2145: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2275: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2313: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:2314: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:2360: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:2361: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:2395: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:2396: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:2480: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:2481: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:2565: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2575: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2609: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2686: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2692: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2714: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2741: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2745: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2793: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2818: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2824: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2849: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2858: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2883: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:2948: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:2949: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:3036: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:3037: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:3109: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3260: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3388: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3393: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3446: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3458: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3469: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3486: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3543: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3631: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3677: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3695: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3715: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3739: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3805: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3829: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3840: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3858: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3935: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3941: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3963: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3982: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:3994: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4012: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4086: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4101: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4142: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:4143: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:4196: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4210: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4236: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4264: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4285: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4311: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4330: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4386: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:4387: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:4673: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4714: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4882: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:4948: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5014: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5067: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5179: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5282: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5366: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5382: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5441: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5585: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:5586: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:5685: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5690: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5705: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5782: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:5783: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:5808: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5816: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5880: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:5915: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:5916: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:5925: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5926: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5927: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5928: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5929: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5930: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5931: Error: illegal operands `pref'
/tmp/ccN6Xs81.s:5962: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:5963: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:6008: Error: illegal operands `lui'
/tmp/ccN6Xs81.s:6009: Error: illegal operands `addiu'
/tmp/ccN6Xs81.s:6024: Warning: No .cprestore pseudo-op used in PIC code
/tmp/ccN6Xs81.s:6035: Warning: No .cprestore pseudo-op used in PIC code
Can anyone shine some light on this?
Is prefetch not mean for user program at all?
Have anyone got this to work?
Thanks.
Tim Lai
next reply other threads:[~2004-08-17 23:34 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2004-08-17 23:34 Tim Lai [this message]
[not found] ` <41235841.6090105@amd.com>
2004-08-18 15:06 ` problem with prefetch in user space Tim Lai
2004-08-18 15:31 ` Thiemo Seufer
2004-08-18 16:42 ` Tim Lai
2004-08-18 17:13 ` Thiemo Seufer
2004-08-20 20:44 ` Ralf Baechle
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