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Don't put operands in clobber lists, since this is dubious for old

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versions of gcc and broken for current versions of egcs.  The asm
here (for translate_bytes()) is now an interesting example of one
that needs to be volatile to work.

Fixed missing "memory" in the clobber list for translate_bytes().

Submitted by:	"John S. Dyson" <dyson@iquest.net> but rewritten by me
This commit is contained in:
Bruce Evans 1999-01-09 13:27:37 +00:00
parent c65da0c71e
commit 47886981ee
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/head/; revision=42429
1 changed files with 6 additions and 4 deletions
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10
sys/i386/isa/sound/audio.c
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@ -166,13 +166,15 @@ extern __inline void
translate_bytes(const void *table, void *buff, int n) translate_bytes(const void *table, void *buff, int n)
{ {
if (n > 0) { if (n > 0) {
__asm__("cld\n" __asm __volatile(
"cld\n"
"1:\tlodsb\n\t" "1:\tlodsb\n\t"
"xlatb\n\t" "xlatb\n\t"
"stosb\n\t" "stosb\n\t"
"loop 1b\n\t": "loop 1b\n\t"
:"b"(table), "c"(n), "D"(buff), "S"(buff) : "=b" (table), "=c" (n), "=D" (buff), "=S" (buff)
:"bx", "cx", "di", "si", "ax"); : "0" (table), "1" (n), "2" (buff), "3" (buff)
: "ax", "memory");
} }
} }