[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index] [Minios-devel] [UNIKRAFT PATCH 1/4] plat: prepare linker script for thread-local storage
Aggregate all .tdata and .tbss variables in the correct sections, and define global variables that point at section beginning and end. Signed-off-by: Florian Schmidt <florian.schmidt@xxxxxxxxx> --- plat/common/include/sections.h | 5 +++++ plat/kvm/x86/link64.lds | 18 ++++++++++++++++++ plat/linuxu/Linker.uk | 1 + plat/linuxu/link.ld | 22 ++++++++++++++++++++++ plat/xen/x86/link64.lds | 18 ++++++++++++++++++ 5 files changed, 64 insertions(+) create mode 100644 plat/linuxu/link.ld diff --git a/plat/common/include/sections.h b/plat/common/include/sections.h index 1052cfc7..a2677ce8 100644 --- a/plat/common/include/sections.h +++ b/plat/common/include/sections.h @@ -63,6 +63,11 @@ extern char _data[], _edata[]; /* [_ctors, _ectors]: contains constructor tables (read-only) */ extern char _ctors[], _ectors[]; +/* [_tls_start, _tls_end]: contains .tdata.* and .tbss.* sections */ +extern char _tls_start[], _tls_end[]; +/* _etdata: denotes end of .tdata (and start of .tbss */ +extern char _etdata[]; + /* __bss_start: start of BSS sections */ extern char __bss_start[]; diff --git a/plat/kvm/x86/link64.lds b/plat/kvm/x86/link64.lds index c96f7501..4e52da49 100644 --- a/plat/kvm/x86/link64.lds +++ b/plat/kvm/x86/link64.lds @@ -71,6 +71,24 @@ SECTIONS } _ectors = .; + . = ALIGN(0x8); + _tls_start = .; + .tdata : + { + *(.tdata) + *(.tdata.*) + *(.gnu.linkonce.td.*) + } + _etdata = .; + .tbss : + { + *(.tbss) + *(.tbss.*) + *(.gnu.linkonce.tb.*) + . = ALIGN(0x8); + } + _tls_end = . + SIZEOF(.tbss); + /* Read-write data (initialized) */ . = ALIGN(0x1000); _data = .; diff --git a/plat/linuxu/Linker.uk b/plat/linuxu/Linker.uk index ef4b201c..e0cd1743 100644 --- a/plat/linuxu/Linker.uk +++ b/plat/linuxu/Linker.uk @@ -1,4 +1,5 @@ LINUXU_LDFLAGS-y += -Wl,-e,_liblinuxuplat_start +EXTRA_LD_SCRIPT-y += $(CONFIG_UK_BASE)/plat/linuxu/link.ld ## ## Link image diff --git a/plat/linuxu/link.ld b/plat/linuxu/link.ld new file mode 100644 index 00000000..3f5cd682 --- /dev/null +++ b/plat/linuxu/link.ld @@ -0,0 +1,22 @@ +SECTIONS +{ + . = ALIGN(0x8); + _tls_start = .; + .tdata : + { + *(.tdata) + *(.tdata.*) + *(.gnu.linkonce.td.*) + } + _etdata = .; + .tbss : + { + *(.tbss) + *(.tbss.*) + *(.gnu.linkonce.tb.*) + . = ALIGN(0x8); + } + _tls_end = . + SIZEOF(.tbss); +} + +INSERT BEFORE .data diff --git a/plat/xen/x86/link64.lds b/plat/xen/x86/link64.lds index 82ab653a..c8af67c0 100644 --- a/plat/xen/x86/link64.lds +++ b/plat/xen/x86/link64.lds @@ -67,6 +67,24 @@ SECTIONS . = ALIGN(4096); _ectors = .; + . = ALIGN(0x8); + _tls_start = .; + .tdata : + { + *(.tdata) + *(.tdata.*) + *(.gnu.linkonce.td.*) + } + _etdata = .; + .tbss : + { + *(.tbss) + *(.tbss.*) + *(.gnu.linkonce.tb.*) + . = ALIGN(0x8); + } + _tls_end = . + SIZEOF(.tbss); + /* Data */ _data = .; .data : { -- 2.21.0 _______________________________________________ Minios-devel mailing list Minios-devel@xxxxxxxxxxxxxxxxxxxx https://lists.xenproject.org/mailman/listinfo/minios-devel
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