diff options
Diffstat (limited to 'gold/symtab.h')
| -rw-r--r-- | gold/symtab.h | 32 |
1 files changed, 28 insertions, 4 deletions
diff --git a/gold/symtab.h b/gold/symtab.h index 43a228d..d3e076b 100644 --- a/gold/symtab.h +++ b/gold/symtab.h @@ -480,21 +480,45 @@ class Symbol && (this->is_from_dynobj() || this->is_preemptible())); } + // When determining whether a reference to a symbol needs a dynamic + // relocation, we need to know several things about the reference. + // These flags may be or'ed together. + enum Reference_flags + { + // Reference to the symbol's absolute address. + ABSOLUTE_REF = 1, + // A non-PIC reference. + NON_PIC_REF = 2, + // A function call. + FUNCTION_CALL = 4 + }; + // Given a direct absolute or pc-relative static relocation against // the global symbol, this function returns whether a dynamic relocation // is needed. bool - needs_dynamic_reloc(bool is_absolute_ref, bool is_function_call) const + needs_dynamic_reloc(int flags) const { // An absolute reference within a position-independent output file - // will need a dynamic relocaion. - if (is_absolute_ref && parameters->output_is_position_independent()) + // will need a dynamic relocation. + if ((flags & ABSOLUTE_REF) + && parameters->output_is_position_independent()) return true; // A function call that can branch to a local PLT entry does not need // a dynamic relocation. - if (is_function_call && this->has_plt_offset()) + if ((flags & FUNCTION_CALL) && this->has_plt_offset()) + return false; + + // A non-pic pc-relative function call in a shared library whose target + // is defined in the same load module does not need a dynamic relocation. + // Even if the target is preemptible, we will bind directly, since we + // cannot use a PLT entry in this case. + if ((flags & FUNCTION_CALL) + && (flags & NON_PIC_REF) + && this->is_defined() + && parameters->output_is_shared()) return false; // A reference to any PLT entry in a non-position-independent executable |