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Use the right TLS model for CloudABI. #47110

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Merged
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Jan 5, 2018
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Use the right TLS model for CloudABI. #47110

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4fe167a
Use the right TLS model for CloudABI.
EdSchouten Jan 1, 2018
05949b0
Explain why local-exec is used by CloudABI.
EdSchouten Jan 3, 2018
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Use the right TLS model for CloudABI. 
CloudABI doesn't do dynamic linking. For this reason, there is no need
to handle any other TLS model than local-exec. CloudABI's C library
doesn't provide a __tls_get_addr() function to do Dynamic TLS.

By forcing local-exec to be used here, we ensure that we don't generate
function calls to __tls_get_addr().
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@EdSchouten
EdSchouten committed Jan 1, 2018
commit 4fe167adba47478e1a443c7b82e67e020253eac8
1 change: 1 addition & 0 deletions src/librustc_back/target/cloudabi_base.rs
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Expand Up @@ -27,6 +27,7 @@ pub fn opts() -> TargetOptions {
linker_is_gnu: true,
pre_link_args: args,
position_independent_executables: true,
tls_model: "local-exec".to_string(),
relro_level: RelroLevel::Full,
exe_allocation_crate: super::maybe_jemalloc(),
.. Default::default()
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