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ELF64 segment definitions for TLS

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Add default definitions for .tdata & .tbss sections
Add definition for SHF_TLS section header flag
Add support for "tls" keyword on section statement
This commit is contained in:
Charles Crayne 2008-10-25 15:23:30 -07:00
parent 9ee0ceadff
commit 4adf21c08c
1 changed files with 10 additions and 0 deletions
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10
output/outelf64.c
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@ -29,6 +29,7 @@
#define SHF_WRITE (1 << 0) /* Writable */
#define SHF_ALLOC (1 << 1) /* Occupies memory during execution */
#define SHF_EXECINSTR (1 << 2) /* Executable */
#define SHF_TLS (1 << 10) /* Section hold thread-local data. */
#define SHN_ABS 0xfff1 /* Associated symbol is absolute */
#define SHN_COMMON 0xfff2 /* Associated symbol is common */
#define R_X86_64_NONE 0 /* No reloc */
@ -505,6 +506,9 @@ static int32_t elf_section_names(char *name, int pass, int *bits)
} else if (!nasm_stricmp(q, "write")) {
flags_and |= SHF_WRITE;
flags_or |= SHF_WRITE;
} else if (!nasm_stricmp(q, "tls")) {
flags_and |= SHF_TLS;
flags_or |= SHF_TLS;
} else if (!nasm_stricmp(q, "nowrite")) {
flags_and |= SHF_WRITE;
flags_or &= ~SHF_WRITE;
@ -538,6 +542,12 @@ static int32_t elf_section_names(char *name, int pass, int *bits)
else if (!strcmp(name, ".bss"))
i = elf_make_section(name, SHT_NOBITS,
SHF_ALLOC | SHF_WRITE, 4);
else if (!strcmp(name, ".tdata"))
i = elf_make_section(name, SHT_PROGBITS,
SHF_ALLOC | SHF_WRITE | SHF_TLS, 4);
else if (!strcmp(name, ".tbss"))
i = elf_make_section(name, SHT_NOBITS,
SHF_ALLOC | SHF_WRITE | SHF_TLS, 4);
else
i = elf_make_section(name, SHT_PROGBITS, SHF_ALLOC, 1);
if (type)