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Import CK as of 21d3e319407d19dece16ee317c757ffc54a452bc, which makes its

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sparcv9 atomics compatible with the FreeBSD kernel by using instructions
which access the appropriate address space.
This commit is contained in:
Marius Strobl 2018-11-27 12:31:58 +00:00
parent 2eb56105b9
commit 48289654a0
Notes: svn2git 2020-12-20 02:59:44 +00:00 
svn path=/vendor-sys/ck/dist/; revision=341039
svn path=/vendor-sys/ck/20181120/; revision=341040; tag=vendor/ck/20181120
1 changed files with 25 additions and 5 deletions
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30
include/gcc/sparcv9/ck_pr.h
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@ -136,11 +136,26 @@ CK_PR_STORE_S(int, int, "stsw")
#undef CK_PR_STORE_S
#undef CK_PR_STORE
/* Use the appropriate address space for atomics within the FreeBSD kernel. */
#if defined(__FreeBSD__) && defined(_KERNEL)
#include <sys/cdefs.h>
#include <machine/atomic.h>
#define CK_PR_INS_CAS "casa"
#define CK_PR_INS_CASX "casxa"
#define CK_PR_INS_SWAP "swapa"
#define CK_PR_ASI_ATOMIC __XSTRING(__ASI_ATOMIC)
#else
#define CK_PR_INS_CAS "cas"
#define CK_PR_INS_CASX "casx"
#define CK_PR_INS_SWAP "swap"
#define CK_PR_ASI_ATOMIC ""
#endif
CK_CC_INLINE static bool
ck_pr_cas_64_value(uint64_t *target, uint64_t compare, uint64_t set, uint64_t *value)
{
__asm__ __volatile__("casx [%1], %2, %0"
__asm__ __volatile__(CK_PR_INS_CASX " [%1] " CK_PR_ASI_ATOMIC ", %2, %0"
: "+&r" (set)
: "r" (target),
"r" (compare)
@ -154,7 +169,7 @@ CK_CC_INLINE static bool
ck_pr_cas_64(uint64_t *target, uint64_t compare, uint64_t set)
{
__asm__ __volatile__("casx [%1], %2, %0"
__asm__ __volatile__(CK_PR_INS_CASX " [%1] " CK_PR_ASI_ATOMIC ", %2, %0"
: "+&r" (set)
: "r" (target),
"r" (compare)
@ -181,7 +196,7 @@ ck_pr_cas_ptr_value(void *target, void *compare, void *set, void *previous)
CK_CC_INLINE static bool \
ck_pr_cas_##N##_value(T *target, T compare, T set, T *value) \
{ \
__asm__ __volatile__("cas [%1], %2, %0" \
__asm__ __volatile__(CK_PR_INS_CAS " [%1] " CK_PR_ASI_ATOMIC ", %2, %0" \
: "+&r" (set) \
: "r" (target), \
"r" (compare) \
@ -192,7 +207,7 @@ ck_pr_cas_ptr_value(void *target, void *compare, void *set, void *previous)
CK_CC_INLINE static bool \
ck_pr_cas_##N(T *target, T compare, T set) \
{ \
__asm__ __volatile__("cas [%1], %2, %0" \
__asm__ __volatile__(CK_PR_INS_CAS " [%1] " CK_PR_ASI_ATOMIC ", %2, %0" \
: "+&r" (set) \
: "r" (target), \
"r" (compare) \
@ -211,7 +226,7 @@ CK_PR_CAS(int, int)
ck_pr_fas_##N(T *target, T update) \
{ \
\
__asm__ __volatile__("swap [%1], %0" \
__asm__ __volatile__(CK_PR_INS_SWAP " [%1] " CK_PR_ASI_ATOMIC ", %0" \
: "+&r" (update) \
: "r" (target) \
: "memory"); \
@ -224,5 +239,10 @@ CK_PR_FAS(32, uint32_t)
#undef CK_PR_FAS
#undef CK_PR_INS_CAS
#undef CK_PR_INS_CASX
#undef CK_PR_INS_SWAP
#undef CK_PR_ASI_ATOMIC
#endif /* CK_PR_SPARCV9_H */