arc: Fix alignment of the TLS Translation Control Block (from upstream) #9
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The R_ARC_TLS_LE_32 is defined as S + A + TLS_TBSS - TLS_REL, where
- S is the base address of the symbol in the memory
- A is the symbol addendum
- TLS_TBSS is the TLS Translation Control Block size (aligned)
- TLS_REL is the base of the TLS section
Given the next code snip:
__thread int data_var = 12;
__attribute__((__aligned__(128))) __thread int data_var_128 = 128;
__thread int bss_var;
__attribute__((__aligned__(256))) __thread int bss_var_256;
int __start(void)
{
return data_var + data_var_128 + bss_var + bss_var_256;
}
The current code returns different TLS_TBSS values for .tdata and
.tbss. This patch fixes this by using the linker provided tls_sec.
Signed-off-by: Claudiu Zissulescu <claziss@gmail.com>
|
This just cherry-picks the fix so we might get it into 0.16.2; do you want more than that? |
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The R_ARC_TLS_LE_32 is defined as S + A + TLS_TBSS - TLS_REL, where
Given the next code snip:
__thread int data_var = 12;
attribute((aligned(128))) __thread int data_var_128 = 128; __thread int bss_var;
attribute((aligned(256))) __thread int bss_var_256;
int __start(void)
{
return data_var + data_var_128 + bss_var + bss_var_256;
}
The current code returns different TLS_TBSS values for .tdata and .tbss. This patch fixes this by using the linker provided tls_sec.