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authorDavid Edelsohn <dje.gcc@gmail.com>1994-01-15 17:31:05 +0000
committerDavid Edelsohn <dje.gcc@gmail.com>1994-01-15 17:31:05 +0000
commite79cb10bbe0e33b78226b8d3b703d93b4e6b0841 (patch)
treea038edb67c9f66ef2d6fc72d5ddec422e8614757 /gas/config
parenta9b32d6192a3f30e3e7f34881f4914875a383f92 (diff)
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* config/obj-elf.c (obj_elf_section): Fix loop termination test.
Diffstat (limited to 'gas/config')
-rw-r--r--gas/config/obj-elf.c131
1 files changed, 101 insertions, 30 deletions
diff --git a/gas/config/obj-elf.c b/gas/config/obj-elf.c
index a0cf0ac..8a4ea55 100644
--- a/gas/config/obj-elf.c
+++ b/gas/config/obj-elf.c
@@ -25,6 +25,10 @@
#include "ecoff.h"
#endif
+#ifdef TC_MIPS
+#include "elf/mips.h"
+#endif
+
static int obj_elf_write_symbol_p PARAMS ((symbolS *sym));
#ifdef ECOFF_DEBUGGING
@@ -350,6 +354,53 @@ static int previous_subsection;
other possibilities, but I don't know what they are. In any case,
BFD doesn't really let us set the section type. */
+/* Certain named sections have particular defined types, listed on p.
+ 4-19 of the ABI. */
+struct special_section
+{
+ const char *name;
+ int type;
+ int attributes;
+};
+
+static struct special_section special_sections[] =
+{
+ { ".bss", SHT_NOBITS, SHF_ALLOC + SHF_WRITE },
+ { ".comment", SHT_PROGBITS, 0 },
+ { ".data", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".data1", SHT_PROGBITS, SHF_ALLOC + SHF_WRITE },
+ { ".debug", SHT_PROGBITS, 0 },
+ { ".fini", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".init", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+ { ".line", SHT_PROGBITS, 0 },
+ { ".note", SHT_NOTE, 0 },
+ { ".rodata", SHT_PROGBITS, SHF_ALLOC },
+ { ".rodata1", SHT_PROGBITS, SHF_ALLOC },
+ { ".text", SHT_PROGBITS, SHF_ALLOC + SHF_EXECINSTR },
+
+#ifdef ELF_TC_SPECIAL_SECTIONS
+ ELF_TC_SPECIAL_SECTIONS
+#endif
+
+#if 0
+ /* The following section names are special, but they can not
+ reasonably appear in assembler code. Some of the attributes are
+ processor dependent. */
+ { ".dynamic", SHT_DYNAMIC, SHF_ALLOC /* + SHF_WRITE */ },
+ { ".dynstr", SHT_STRTAB, SHF_ALLOC },
+ { ".dynsym", SHT_DYNSYM, SHF_ALLOC },
+ { ".got", SHT_PROGBITS, 0 },
+ { ".hash", SHT_HASH, SHF_ALLOC },
+ { ".interp", SHT_PROGBITS, /* SHF_ALLOC */ },
+ { ".plt", SHT_PROGBITS, 0 },
+ { ".shstrtab",SHT_STRTAB, 0 },
+ { ".strtab", SHT_STRTAB, /* SHF_ALLOC */ },
+ { ".symtab", SHT_SYMTAB, /* SHF_ALLOC */ },
+#endif
+
+ { NULL, 0, 0 }
+};
+
void
obj_elf_section (xxx)
int xxx;
@@ -357,6 +408,8 @@ obj_elf_section (xxx)
char *string;
int new_sec;
segT sec;
+ int type, attr;
+ int i;
flagword flags;
/* Get name of section. */
@@ -408,26 +461,11 @@ obj_elf_section (xxx)
}
SKIP_WHITESPACE ();
- if (*input_line_pointer != ',')
- {
- /* No flags given. Guess at some useful defaults. */
- if (strcmp (string, ".data") == 0
- || strcmp (string, ".data1") == 0
- || strcmp (string, ".sdata") == 0
- || strcmp (string, ".rodata") == 0
- || strcmp (string, ".rodata1") == 0)
- flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_RELOC | SEC_DATA;
- else if (strcmp (string, ".text") == 0
- || strcmp (string, ".init") == 0
- || strcmp (string, ".fini") == 0)
- flags = SEC_ALLOC | SEC_LOAD | SEC_READONLY | SEC_RELOC | SEC_CODE;
- else if (strcmp (string, ".bss") == 0
- || strcmp (string, ".sbss") == 0)
- flags = SEC_ALLOC;
- else
- flags = SEC_RELOC;
- }
- else
+
+ type = SHT_NULL;
+ attr = 0;
+
+ if (*input_line_pointer == ',')
{
/* Skip the comma. */
++input_line_pointer;
@@ -436,20 +474,19 @@ obj_elf_section (xxx)
if (*input_line_pointer == '"')
{
/* Pick up a string with a combination of a, w, x. */
- flags = SEC_READONLY | SEC_RELOC;
++input_line_pointer;
while (*input_line_pointer != '"')
{
switch (*input_line_pointer)
{
case 'a':
- flags |= SEC_ALLOC | SEC_LOAD;
+ attr |= SHF_ALLOC;
break;
case 'w':
- flags &=~ SEC_READONLY;
+ attr |= SHF_WRITE;
break;
case 'x':
- flags |= SEC_CODE;
+ attr |= SHF_EXECINSTR;
break;
default:
as_warn ("Bad .section directive: want a,w,x in string");
@@ -473,13 +510,13 @@ obj_elf_section (xxx)
if (strncmp (input_line_pointer, "progbits",
sizeof "progbits" - 1) == 0)
{
- flags |= SEC_ALLOC | SEC_LOAD;
+ type = SHT_PROGBITS;
input_line_pointer += sizeof "progbits" - 1;
}
else if (strncmp (input_line_pointer, "nobits",
sizeof "nobits" - 1) == 0)
{
- flags &=~ SEC_LOAD;
+ type = SHT_NOBITS;
input_line_pointer += sizeof "nobits" - 1;
}
else
@@ -492,7 +529,6 @@ obj_elf_section (xxx)
}
else
{
- flags = SEC_READONLY | SEC_RELOC;
do
{
SKIP_WHITESPACE ();
@@ -506,19 +542,19 @@ obj_elf_section (xxx)
if (strncmp (input_line_pointer, "write",
sizeof "write" - 1) == 0)
{
- flags &=~ SEC_READONLY;
+ attr |= SHF_WRITE;
input_line_pointer += sizeof "write" - 1;
}
else if (strncmp (input_line_pointer, "alloc",
sizeof "alloc" - 1) == 0)
{
- flags |= SEC_ALLOC | SEC_LOAD;
+ attr |= SHF_ALLOC;
input_line_pointer += sizeof "alloc" - 1;
}
else if (strncmp (input_line_pointer, "execinstr",
sizeof "execinstr" - 1) == 0)
{
- flags |= SEC_CODE;
+ attr |= SHF_EXECINSTR;
input_line_pointer += sizeof "execinstr" - 1;
}
else
@@ -534,6 +570,37 @@ obj_elf_section (xxx)
}
}
+ /* See if this is one of the special sections. */
+ for (i = 0; special_sections[i].name != NULL; i++)
+ {
+ if (string[1] == special_sections[i].name[1]
+ && strcmp (string, special_sections[i].name) == 0)
+ {
+ if (type == SHT_NULL)
+ type = special_sections[i].type;
+ else if (type != special_sections[i].type)
+ as_warn ("Setting incorrect section type for %s", string);
+
+ if ((attr &~ special_sections[i].attributes) != 0)
+ as_warn ("Setting incorrect section attributes for %s", string);
+ attr |= special_sections[i].attributes;
+
+ break;
+ }
+ }
+
+ flags = (SEC_RELOC
+ | ((attr & SHF_WRITE) ? 0 : SEC_READONLY)
+ | ((attr & SHF_ALLOC) ? SEC_ALLOC | SEC_LOAD : 0)
+ | ((attr & SHF_EXECINSTR) ? SEC_CODE : 0));
+ if (type == SHT_PROGBITS)
+ flags |= SEC_ALLOC | SEC_LOAD;
+ else if (type == SHT_NOBITS)
+ {
+ flags |= SEC_ALLOC;
+ flags &=~ SEC_LOAD;
+ }
+
bfd_set_section_flags (stdoutput, sec, flags);
demand_empty_rest_of_line ();
@@ -867,6 +934,8 @@ obj_elf_ident (ignore)
subseg_set (old_section, old_subsection);
}
+#ifdef INIT_STAB_SECTION
+
/* The first entry in a .stabs section is special. */
void
@@ -893,6 +962,8 @@ obj_elf_init_stab_section (seg)
seg_info (seg)->stabu.p = p;
}
+#endif
+
/* Fill in the counts in the first entry in a .stabs section. */
static void