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nios2: recognize %gotoff relocation in assembler

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The nios2 ABI documentation lists %gotoff as assembler syntax for the
R_NIOS2_GOTOFF relocation, used to represent a 32-bit GOT-relative offset
in data sections.  This was previously unimplemented in GAS.

2020-01-31  Sandra Loosemore  <sandra@codesourcery.com>

	gas/
	* config/tc-nios2.c (nios2_cons): Handle %gotoff as well as
	%tls_ldo.
This commit is contained in:
Sandra Loosemore 2020-01-31 10:32:48 -08:00
parent d465d69579
commit 95441c43cc
2 changed files with 35 additions and 10 deletions
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5
gas/ChangeLog
View File

@ -1,3 +1,8 @@
2020-01-31 Sandra Loosemore <sandra@codesourcery.com>
* config/tc-nios2.c (nios2_cons): Handle %gotoff as well as
%tls_ldo.
2020-01-31 Andre Vieira <andre.simoesdiasvieira@arm.com>
PR gas/25472

40
gas/config/tc-nios2.c
View File

@ -4011,31 +4011,48 @@ nios2_elf_section_flags (flagword flags, int attr, int type ATTRIBUTE_UNUSED)
return flags;
}
/* Implement TC_PARSE_CONS_EXPRESSION to handle %tls_ldo(...) */
/* Implement TC_PARSE_CONS_EXPRESSION to handle %tls_ldo(...) and
%gotoff(...). */
bfd_reloc_code_real_type
nios2_cons (expressionS *exp, int size)
{
bfd_reloc_code_real_type nios2_tls_ldo_reloc = BFD_RELOC_NONE;
bfd_reloc_code_real_type explicit_reloc = BFD_RELOC_NONE;
const char *reloc_name = NULL;
SKIP_WHITESPACE ();
if (input_line_pointer[0] == '%')
{
if (strprefix (input_line_pointer + 1, "tls_ldo"))
{
reloc_name = "%tls_ldo";
if (size != 4)
as_bad (_("Illegal operands: %%tls_ldo in %d-byte data field"),
size);
else
{
input_line_pointer += 8;
nios2_tls_ldo_reloc = BFD_RELOC_NIOS2_TLS_DTPREL;
explicit_reloc = BFD_RELOC_NIOS2_TLS_DTPREL;
}
}
if (nios2_tls_ldo_reloc != BFD_RELOC_NONE)
else if (strprefix (input_line_pointer + 1, "gotoff"))
{
reloc_name = "%gotoff";
if (size != 4)
as_bad (_("Illegal operands: %%gotoff in %d-byte data field"),
size);
else
{
input_line_pointer += 7;
explicit_reloc = BFD_RELOC_NIOS2_GOTOFF;
}
}
if (explicit_reloc != BFD_RELOC_NONE)
{
SKIP_WHITESPACE ();
if (input_line_pointer[0] != '(')
as_bad (_("Illegal operands: %%tls_ldo requires arguments in ()"));
as_bad (_("Illegal operands: %s requires arguments in ()"),
reloc_name);
else
{
int c;
@ -4053,29 +4070,32 @@ nios2_cons (expressionS *exp, int size)
}
if (c != ')')
as_bad (_("Illegal operands: %%tls_ldo requires arguments in ()"));
as_bad (_("Illegal operands: %s requires arguments in ()"),
reloc_name);
else
{
*end = '\0';
expression (exp);
*end = c;
if (input_line_pointer != end)
as_bad (_("Illegal operands: %%tls_ldo requires arguments in ()"));
as_bad (_("Illegal operands: %s requires arguments in ()"),
reloc_name);
else
{
input_line_pointer++;
SKIP_WHITESPACE ();
c = *input_line_pointer;
if (! is_end_of_line[c] && c != ',')
as_bad (_("Illegal operands: garbage after %%tls_ldo()"));
as_bad (_("Illegal operands: garbage after %s()"),
reloc_name);
}
}
}
}
}
if (nios2_tls_ldo_reloc == BFD_RELOC_NONE)
if (explicit_reloc == BFD_RELOC_NONE)
expression (exp);
return nios2_tls_ldo_reloc;
return explicit_reloc;
}
/* Implement HANDLE_ALIGN. */