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* config/tc-mips.c (normalize_constant_expr): New function to fix sign

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extensions broken by gas' expression evaluation of constants.
	(check_absolute_expr): Use it.
	(mips_ip): Likewise.
This commit is contained in:
Thiemo Seufer
2003-10-19 21:50:43 +00:00
parent 75ca919acf
commit 13757d0cbb
2 changed files with 19 additions and 0 deletions
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7
gas/ChangeLog
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@ -1,3 +1,10 @@
2003-10-19 Thiemo Seufer <seufer@csv.ica.uni-stuttgart.de>
* config/tc-mips.c (normalize_constant_expr): New function to fix sign
extensions broken by gas' expression evaluation of constants.
(check_absolute_expr): Use it.
(mips_ip): Likewise.
2003-10-18 Hans-Peter Nilsson <hp@bitrange.com> 2003-10-18 Hans-Peter Nilsson <hp@bitrange.com>
Generate BFD_RELOC_MMIX_PUSHJ_STUBBABLE for PUSHJ when possible. Generate BFD_RELOC_MMIX_PUSHJ_STUBBABLE for PUSHJ when possible.

12
gas/config/tc-mips.c
View File

@ -3329,6 +3329,14 @@ set_at (int *counter, int reg, int unsignedp)
} }
} }
static void
normalize_constant_expr (expressionS *ex)
{
if (ex->X_op == O_constant && HAVE_32BIT_GPRS)
ex->X_add_number = (((ex->X_add_number & 0xffffffff) ^ 0x80000000)
- 0x80000000);
}
/* Warn if an expression is not a constant. */ /* Warn if an expression is not a constant. */
static void static void
@ -3338,6 +3346,8 @@ check_absolute_expr (struct mips_cl_insn *ip, expressionS *ex)
as_bad (_("unsupported large constant")); as_bad (_("unsupported large constant"));
else if (ex->X_op != O_constant) else if (ex->X_op != O_constant)
as_bad (_("Instruction %s requires absolute expression"), ip->insn_mo->name); as_bad (_("Instruction %s requires absolute expression"), ip->insn_mo->name);
normalize_constant_expr (ex);
} }
/* Count the leading zeroes by performing a binary chop. This is a /* Count the leading zeroes by performing a binary chop. This is a
@ -8562,6 +8572,7 @@ do_msbd:
if (imm2_expr.X_op != O_big if (imm2_expr.X_op != O_big
&& imm2_expr.X_op != O_constant) && imm2_expr.X_op != O_constant)
insn_error = _("absolute expression required"); insn_error = _("absolute expression required");
normalize_constant_expr (&imm2_expr);
s = expr_end; s = expr_end;
continue; continue;
@ -9050,6 +9061,7 @@ do_msbd:
if (imm_expr.X_op != O_big if (imm_expr.X_op != O_big
&& imm_expr.X_op != O_constant) && imm_expr.X_op != O_constant)
insn_error = _("absolute expression required"); insn_error = _("absolute expression required");
normalize_constant_expr (&imm_expr);
s = expr_end; s = expr_end;
continue; continue;