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| 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 | c901c3e764d7c7079f006b4e21e877d5036eb4f5 (patch) | |
| tree | ed5a2defd04179a354f4581b0b94b50b6634751e /sysdeps/unix/sysv/linux/riscv | |
| parent | e3e589829d16af9f7e73c7b70f74f3c5d5003e45 (diff) | |
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nptl: Add public rseq symbols and <sys/rseq.h>
The relationship between the thread pointer and the rseq area
is made explicit. The constant offset can be used by JIT compilers
to optimize rseq access (e.g., for really fast sched_getcpu).
Extensibility is provided through __rseq_size and __rseq_flags.
(In the future, the kernel could request a different rseq size
via the auxiliary vector.)
Co-Authored-By: Mathieu Desnoyers <mathieu.desnoyers@efficios.com>
Reviewed-by: Szabolcs Nagy <szabolcs.nagy@arm.com>
Diffstat (limited to 'sysdeps/unix/sysv/linux/riscv')
| -rw-r--r-- | sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist | 3 | ||||
| -rw-r--r-- | sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist b/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist index 94ca64c43d..4c67ea18d6 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv32/ld.abilist @@ -3,3 +3,6 @@ GLIBC_2.33 __stack_chk_guard D 0x4 GLIBC_2.33 __tls_get_addr F GLIBC_2.33 _dl_mcount F GLIBC_2.33 _r_debug D 0x14 +GLIBC_2.35 __rseq_flags D 0x4 +GLIBC_2.35 __rseq_offset D 0x4 +GLIBC_2.35 __rseq_size D 0x4 diff --git a/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist b/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist index 845f356c3c..09596f09e2 100644 --- a/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist +++ b/sysdeps/unix/sysv/linux/riscv/rv64/ld.abilist @@ -3,3 +3,6 @@ GLIBC_2.27 __stack_chk_guard D 0x8 GLIBC_2.27 __tls_get_addr F GLIBC_2.27 _dl_mcount F GLIBC_2.27 _r_debug D 0x28 +GLIBC_2.35 __rseq_flags D 0x4 +GLIBC_2.35 __rseq_offset D 0x4 +GLIBC_2.35 __rseq_size D 0x4 |