From 138274e92a01be8a98392489b1a2f497ab11c201 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Sat, 1 Jun 2024 03:39:03 -0700 Subject: xtensa: add FDPIC support This change implements Xtensa FDPIC ABI as specified in the first version of the following document: https://github.com/jcmvbkbc/xtensa-abi/blob/master/fdpic-xtensa.txt Signed-off-by: Max Filippov --- .../sysdeps/unix/sysv/linux/xtensa/Makefile.arch | 2 ++ libpthread/nptl/sysdeps/xtensa/dl-tls.h | 33 ++++++++++++++++------ 2 files changed, 26 insertions(+), 9 deletions(-) (limited to 'libpthread') diff --git a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch index 6f1734871..a3719a3fb 100644 --- a/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch +++ b/libpthread/nptl/sysdeps/unix/sysv/linux/xtensa/Makefile.arch @@ -9,3 +9,5 @@ CFLAGS-OMIT-fork.c = -DNOT_IN_libc -DIS_IN_libpthread ASFLAGS-syscall.S = -D_LIBC_REENTRANT ASFLAGS-mmap.S = -D_LIBC_REENTRANT + +ASFLAGS += -DUSE___THREAD diff --git a/libpthread/nptl/sysdeps/xtensa/dl-tls.h b/libpthread/nptl/sysdeps/xtensa/dl-tls.h index adc02d74a..5fc4ea2d0 100644 --- a/libpthread/nptl/sysdeps/xtensa/dl-tls.h +++ b/libpthread/nptl/sysdeps/xtensa/dl-tls.h @@ -28,6 +28,29 @@ typedef struct extern void *__tls_get_addr (tls_index *ti); +/* Type used as the argument in a TLS descriptor for a symbol that + needs dynamic TLS offsets. */ +struct tlsdesc_dynamic_arg +{ + tls_index tlsinfo; + size_t gen_count; +}; + +#ifdef __FDPIC__ +/* Type used to represent a TLS descriptor. */ +struct tlsdesc +{ + ptrdiff_t (*entry)(struct tlsdesc *); + void *argument; +}; + +extern ptrdiff_t attribute_hidden + _dl_tlsdesc_return(struct tlsdesc *); + +extern void *_dl_make_tlsdesc_dynamic (struct link_map *map, size_t ti_offset); +extern ptrdiff_t attribute_hidden + _dl_tlsdesc_dynamic(struct tlsdesc *); +#else /* Type used to represent a TLS descriptor. */ struct tlsdesc { @@ -39,19 +62,11 @@ struct tlsdesc ptrdiff_t (*entry)(struct tlsdesc *); }; -/* Type used as the argument in a TLS descriptor for a symbol that - needs dynamic TLS offsets. */ -struct tlsdesc_dynamic_arg -{ - tls_index tlsinfo; - size_t gen_count; -}; - extern ptrdiff_t attribute_hidden _dl_tlsdesc_return(struct tlsdesc_dynamic_arg *); extern void *_dl_make_tlsdesc_dynamic (struct link_map *map, size_t ti_offset); extern ptrdiff_t attribute_hidden _dl_tlsdesc_dynamic(struct tlsdesc_dynamic_arg *); - +#endif #endif -- cgit v1.2.3