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| author | Lifang Xia <lifang_xia@c-sky.com> | 2021-08-10 11:16:57 +0800 |
|---|---|---|
| committer | Lifang Xia <lifang_xia@c-sky.com> | 2021-08-13 14:13:58 +0800 |
| commit | 1374be23274d0d569ca160b8172b2c02fc37becc (patch) | |
| tree | 0fdc9b02fafdfa1bb46b1eb8255ea99aea3491f2 /opcodes | |
| parent | af29a8abcf50ff9cb465a136c68b06bfc2ca7b75 (diff) | |
| download | gdb-1374be23274d0d569ca160b8172b2c02fc37becc.zip gdb-1374be23274d0d569ca160b8172b2c02fc37becc.tar.gz gdb-1374be23274d0d569ca160b8172b2c02fc37becc.tar.bz2 | |
PR28168: [CSKY] Fix stack overflow in disassembler
PR 28168:
Stack overflow with a large float. %f is not a goot choice for this.
%f should be replaced with %.7g.
gas/
* testsuite/gas/csky/pr28168.d: New testcase for PR 28168.
* testsuite/gas/csky/pr28168.s: Likewise.
* testsuite/gas/csky/v2_float_part2.d: Following the new format.
* opcodes/csky-dis.c (csky_output_operand): %.7g replaces %f.
Diffstat (limited to 'opcodes')
| -rw-r--r-- | opcodes/csky-dis.c | 8 |
1 files changed, 4 insertions, 4 deletions
diff --git a/opcodes/csky-dis.c b/opcodes/csky-dis.c index cdd911b..cca8d36 100644 --- a/opcodes/csky-dis.c +++ b/opcodes/csky-dis.c @@ -565,7 +565,7 @@ csky_output_operand (char *str, struct operand const *oprnd, ? &floatformat_ieee_double_big : &floatformat_ieee_double_little), ibytes, &f); - sprintf (buf, "%f", f); + sprintf (buf, "%.7g", f); } else { @@ -645,7 +645,7 @@ csky_output_operand (char *str, struct operand const *oprnd, floatformat_to_double (&floatformat_ieee_double_little, valbytes, &fvalue); - sprintf (buf, "%f", fvalue); + sprintf (buf, "%.7g", fvalue); strcat (str, buf); break; } @@ -673,7 +673,7 @@ csky_output_operand (char *str, struct operand const *oprnd, float f = 0; memcpy (&f, &value, sizeof (float)); - sprintf (buf, "%f\t// imm9:%4d, imm4:%2d", f, imm8, imm4); + sprintf (buf, "%.7g\t// imm9:%4d, imm4:%2d", f, imm8, imm4); strcat (str, buf); break; @@ -702,7 +702,7 @@ csky_output_operand (char *str, struct operand const *oprnd, } double d = 0; memcpy (&d, &dvalue, sizeof (double)); - sprintf (buf, "%lf\t// imm9:%4ld, imm4:%2ld", d, (long) imm8, (long) imm4); + sprintf (buf, "%.7g\t// imm9:%4ld, imm4:%2ld", d, (long) imm8, (long) imm4); strcat (str, buf); break; |