This patch ensure same output for sleb128 with large number.

gas/
	* read.c (emit_leb128_expr): Extended unsigned big number for
	sleb128.
	* testsuite/gas/all/gas.exp (test_cond): Add sleb128-8 test.
	* testsuite/gas/all/sleb128.d: New test.
	* testsuite/gas/all/sleb128.s: New test source.
This commit is contained in:
Tristan Gingold 2017-01-09 15:50:32 +01:00
parent f7fd19e2b8
commit 74def31dcd
5 changed files with 29 additions and 3 deletions

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@ -1,3 +1,11 @@
2017-01-10 Tristan Gingold <gingold@adacore.com>
* read.c (emit_leb128_expr): Extended unsigned big number for
sleb128.
* testsuite/gas/all/gas.exp (test_cond): Add sleb128-8 test.
* testsuite/gas/all/sleb128.d: New test.
* testsuite/gas/all/sleb128.s: New test source.
2017-01-09 Andrew Waterman <andrew@sifive.com>
* config/tc-riscv.c (append_insn): Don't eagerly apply relocations

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@ -5344,13 +5344,21 @@ emit_leb128_expr (expressionS *exp, int sign)
else if (op == O_big)
{
/* O_big is a different sort of constant. */
int nbr_digits = exp->X_add_number;
unsigned int size;
char *p;
size = output_big_leb128 (NULL, generic_bignum, exp->X_add_number, sign);
/* If the leading littenum is 0xffff, prepend a 0 to avoid confusion with
a signed number. Unary operators like - or ~ always extend the
bignum to its largest size. */
if (exp->X_unsigned
&& nbr_digits < SIZE_OF_LARGE_NUMBER
&& generic_bignum[nbr_digits - 1] == LITTLENUM_MASK)
generic_bignum[nbr_digits++] = 0;
size = output_big_leb128 (NULL, generic_bignum, nbr_digits, sign);
p = frag_more (size);
if (output_big_leb128 (p, generic_bignum, exp->X_add_number, sign) > size)
if (output_big_leb128 (p, generic_bignum, nbr_digits, sign) > size)
abort ();
}
else

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@ -393,6 +393,7 @@ run_dump_test sleb128-5
if { ![istarget "tic4x*-*-*"] && ![istarget "tic54x*-*-*"] } {
run_dump_test sleb128-7
}
run_dump_test sleb128-8
# .byte is 32 bits on tic4x, and .p2align isn't supported on tic54x
# .space is different on hppa*-hpux.

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@ -0,0 +1,7 @@
#objdump : -s -j .data -j "\$DATA\$"
#name : .sleb128 tests (8)
.*: .*
Contents of section (\.data|\$DATA\$):
0000 ffffffff ffff3f .*

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@ -0,0 +1,2 @@
.data
.sleb128 281474976710655