diff options
author | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
---|---|---|
committer | Florian Weimer <fweimer@redhat.com> | 2021-12-09 09:49:32 +0100 |
commit | ce2248ab91b2ea09a378f85012f251f31ac65e31 (patch) | |
tree | bb3fe4e9cd3ce325947f2b3cee4d0570f48e13d5 /sysdeps/x86_64/nptl/tls.h | |
parent | 8dbeb0561eeb876f557ac9eef5721912ec074ea5 (diff) | |
download | glibc-ce2248ab91b2ea09a378f85012f251f31ac65e31.tar.gz glibc-ce2248ab91b2ea09a378f85012f251f31ac65e31.tar.xz glibc-ce2248ab91b2ea09a378f85012f251f31ac65e31.zip |
nptl: Introduce <tcb-access.h> for THREAD_* accessors
These are common between most architectures. Only the x86 targets are outliers. Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'sysdeps/x86_64/nptl/tls.h')
-rw-r--r-- | sysdeps/x86_64/nptl/tls.h | 114 |
1 files changed, 1 insertions, 113 deletions
diff --git a/sysdeps/x86_64/nptl/tls.h b/sysdeps/x86_64/nptl/tls.h index b0d044353b..a39579897c 100644 --- a/sysdeps/x86_64/nptl/tls.h +++ b/sysdeps/x86_64/nptl/tls.h @@ -195,119 +195,7 @@ _Static_assert (offsetof (tcbhead_t, __glibc_unused2) == 0x80, # define DB_THREAD_SELF_INCLUDE <sys/reg.h> /* For the FS constant. */ # define DB_THREAD_SELF CONST_THREAD_AREA (64, FS) -/* Read member of the thread descriptor directly. */ -# define THREAD_GETMEM(descr, member) \ - ({ __typeof (descr->member) __value; \ - _Static_assert (sizeof (__value) == 1 \ - || sizeof (__value) == 4 \ - || sizeof (__value) == 8, \ - "size of per-thread data"); \ - if (sizeof (__value) == 1) \ - asm volatile ("movb %%fs:%P2,%b0" \ - : "=q" (__value) \ - : "0" (0), "i" (offsetof (struct pthread, member))); \ - else if (sizeof (__value) == 4) \ - asm volatile ("movl %%fs:%P1,%0" \ - : "=r" (__value) \ - : "i" (offsetof (struct pthread, member))); \ - else /* 8 */ \ - { \ - asm volatile ("movq %%fs:%P1,%q0" \ - : "=r" (__value) \ - : "i" (offsetof (struct pthread, member))); \ - } \ - __value; }) - - -/* Same as THREAD_GETMEM, but the member offset can be non-constant. */ -# define THREAD_GETMEM_NC(descr, member, idx) \ - ({ __typeof (descr->member[0]) __value; \ - _Static_assert (sizeof (__value) == 1 \ - || sizeof (__value) == 4 \ - || sizeof (__value) == 8, \ - "size of per-thread data"); \ - if (sizeof (__value) == 1) \ - asm volatile ("movb %%fs:%P2(%q3),%b0" \ - : "=q" (__value) \ - : "0" (0), "i" (offsetof (struct pthread, member[0])), \ - "r" (idx)); \ - else if (sizeof (__value) == 4) \ - asm volatile ("movl %%fs:%P1(,%q2,4),%0" \ - : "=r" (__value) \ - : "i" (offsetof (struct pthread, member[0])), "r" (idx));\ - else /* 8 */ \ - { \ - asm volatile ("movq %%fs:%P1(,%q2,8),%q0" \ - : "=r" (__value) \ - : "i" (offsetof (struct pthread, member[0])), \ - "r" (idx)); \ - } \ - __value; }) - - -/* Loading addresses of objects on x86-64 needs to be treated special - when generating PIC code. */ -#ifdef __pic__ -# define IMM_MODE "nr" -#else -# define IMM_MODE "ir" -#endif - - -/* Set member of the thread descriptor directly. */ -# define THREAD_SETMEM(descr, member, value) \ - ({ \ - _Static_assert (sizeof (descr->member) == 1 \ - || sizeof (descr->member) == 4 \ - || sizeof (descr->member) == 8, \ - "size of per-thread data"); \ - if (sizeof (descr->member) == 1) \ - asm volatile ("movb %b0,%%fs:%P1" : \ - : "iq" (value), \ - "i" (offsetof (struct pthread, member))); \ - else if (sizeof (descr->member) == 4) \ - asm volatile ("movl %0,%%fs:%P1" : \ - : IMM_MODE (value), \ - "i" (offsetof (struct pthread, member))); \ - else /* 8 */ \ - { \ - /* Since movq takes a signed 32-bit immediate or a register source \ - operand, use "er" constraint for 32-bit signed integer constant \ - or register. */ \ - asm volatile ("movq %q0,%%fs:%P1" : \ - : "er" ((uint64_t) cast_to_integer (value)), \ - "i" (offsetof (struct pthread, member))); \ - }}) - - -/* Same as THREAD_SETMEM, but the member offset can be non-constant. */ -# define THREAD_SETMEM_NC(descr, member, idx, value) \ - ({ \ - _Static_assert (sizeof (descr->member[0]) == 1 \ - || sizeof (descr->member[0]) == 4 \ - || sizeof (descr->member[0]) == 8, \ - "size of per-thread data"); \ - if (sizeof (descr->member[0]) == 1) \ - asm volatile ("movb %b0,%%fs:%P1(%q2)" : \ - : "iq" (value), \ - "i" (offsetof (struct pthread, member[0])), \ - "r" (idx)); \ - else if (sizeof (descr->member[0]) == 4) \ - asm volatile ("movl %0,%%fs:%P1(,%q2,4)" : \ - : IMM_MODE (value), \ - "i" (offsetof (struct pthread, member[0])), \ - "r" (idx)); \ - else /* 8 */ \ - { \ - /* Since movq takes a signed 32-bit immediate or a register source \ - operand, use "er" constraint for 32-bit signed integer constant \ - or register. */ \ - asm volatile ("movq %q0,%%fs:%P1(,%q2,8)" : \ - : "er" ((uint64_t) cast_to_integer (value)), \ - "i" (offsetof (struct pthread, member[0])), \ - "r" (idx)); \ - }}) - +# include <tcb-access.h> /* Set the stack guard field in TCB head. */ # define THREAD_SET_STACK_GUARD(value) \ |