diff options
Diffstat (limited to 'gcc/varasm.c')
| -rw-r--r-- | gcc/varasm.c | 19 |
1 files changed, 18 insertions, 1 deletions
diff --git a/gcc/varasm.c b/gcc/varasm.c index da7d0d7..b92da26 100644 --- a/gcc/varasm.c +++ b/gcc/varasm.c @@ -1057,7 +1057,11 @@ bss_initializer_p (const_tree decl, bool named) || (DECL_INITIAL (decl) == error_mark_node && !in_lto_p) || (flag_zero_initialized_in_bss - && initializer_zerop (DECL_INITIAL (decl))))); + && initializer_zerop (DECL_INITIAL (decl)) + /* A decl with the "persistent" attribute applied and + explicitly initialized to 0 should not be treated as a BSS + variable. */ + && !DECL_PERSISTENT_P (decl)))); } /* Compute the alignment of variable specified by DECL. @@ -6680,6 +6684,9 @@ default_section_type_flags (tree decl, const char *name, int reloc) if (strcmp (name, ".noinit") == 0) flags |= SECTION_WRITE | SECTION_BSS | SECTION_NOTYPE; + if (strcmp (name, ".persistent") == 0) + flags |= SECTION_WRITE | SECTION_NOTYPE; + /* Various sections have special ELF types that the assembler will assign by default based on the name. They are neither SHT_PROGBITS nor SHT_NOBITS, so when changing sections we don't want to print a @@ -7023,6 +7030,11 @@ default_elf_select_section (tree decl, int reloc, sname = ".sdata2"; break; case SECCAT_DATA: + if (DECL_P (decl) && DECL_PERSISTENT_P (decl)) + { + sname = ".persistent"; + break; + } return data_section; case SECCAT_DATA_REL: sname = ".data.rel"; @@ -7093,6 +7105,11 @@ default_unique_section (tree decl, int reloc) break; case SECCAT_DATA: prefix = one_only ? ".d" : ".data"; + if (DECL_P (decl) && DECL_PERSISTENT_P (decl)) + { + prefix = one_only ? ".p" : ".persistent"; + break; + } break; case SECCAT_DATA_REL: prefix = one_only ? ".d.rel" : ".data.rel"; |