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nexedi
linux
Commits
167f66d3
Commit
167f66d3
authored
Dec 01, 2002
by
David S. Miller
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[SPARC64]: Clobber register l1 in switch_to if gcc >= 3.0
parent
bb527534
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include/asm-sparc64/system.h
include/asm-sparc64/system.h
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include/asm-sparc64/system.h
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167f66d3
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@@ -164,6 +164,11 @@ do { spin_unlock_irq(&(prev)->switch_lock); \
* not preserve it's value. Hairy, but it lets us remove 2 loads
* and 2 stores in this critical code path. -DaveM
*/
#if __GNUC__ >= 3
#define EXTRA_CLOBBER ,"%l1"
#else
#define EXTRA_CLOBBER
#endif
#define switch_to(prev, next, last) \
do { if (test_thread_flag(TIF_PERFCTR)) { \
unsigned long __tmp; \
...
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@@ -209,10 +214,11 @@ do { if (test_thread_flag(TIF_PERFCTR)) { \
: "0" (next->thread_info), \
"i" (TI_WSTATE), "i" (TI_KSP), "i" (TI_FLAGS), "i" (TI_CWP), \
"i" (_TIF_NEWCHILD), "i" (TI_TASK) \
: "cc", "g1", "g2", "g3", "g5", "g7", \
"l2", "l3", "l4", "l5", "l6", "l7", \
: "cc", \
"g1", "g2", "g3", "g5", "g7", \
"l2", "l3", "l4", "l5", "l6", "l7", \
"i0", "i1", "i2", "i3", "i4", "i5", \
"o0", "o1", "o2", "o3", "o4", "o5",
"o7");
\
"o0", "o1", "o2", "o3", "o4", "o5",
"o7" EXTRA_CLOBBER);
\
/* If you fuck with this, update ret_from_syscall code too. */
\
if (test_thread_flag(TIF_PERFCTR)) { \
write_pcr(current_thread_info()->pcr_reg); \
...
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