diff options
| author | Alan Modra <amodra@gmail.com> | 2020-08-31 11:38:05 +0930 |
|---|---|---|
| committer | Alan Modra <amodra@gmail.com> | 2020-08-31 20:28:10 +0930 |
| commit | 227d539b17c60a74c583dc66a2c0467243eb4bb2 (patch) | |
| tree | 425307d891720f74dab29a3c2c2ce4fe41f552e3 | |
| parent | 1a211fc7d87dc92c2c91d24d0424d8f0485587f9 (diff) | |
| download | gdb-227d539b17c60a74c583dc66a2c0467243eb4bb2.zip gdb-227d539b17c60a74c583dc66a2c0467243eb4bb2.tar.gz gdb-227d539b17c60a74c583dc66a2c0467243eb4bb2.tar.bz2 | |
PR26476, PR26477 UBSAN: elfxx-mips.c:2695,5370 cannot be represented
PR 26476
PR 26477
* elfxx-mips.c (CRINFO_CTYPE, CRINFO_RTYPE, CRINFO_DIST2TO),
(CRINFO_RELVADDR): Make unsigned.
(mips_elf_nullify_got_load): Use unsigned constant when shifting
into sign bit.
| -rw-r--r-- | bfd/ChangeLog | 9 | ||||
| -rw-r--r-- | bfd/elfxx-mips.c | 10 |
2 files changed, 14 insertions, 5 deletions
diff --git a/bfd/ChangeLog b/bfd/ChangeLog index f972a5a..ae405e8 100644 --- a/bfd/ChangeLog +++ b/bfd/ChangeLog @@ -1,5 +1,14 @@ 2020-08-31 Alan Modra <amodra@gmail.com> + PR 26476 + PR 26477 + * elfxx-mips.c (CRINFO_CTYPE, CRINFO_RTYPE, CRINFO_DIST2TO), + (CRINFO_RELVADDR): Make unsigned. + (mips_elf_nullify_got_load): Use unsigned constant when shifting + into sign bit. + +2020-08-31 Alan Modra <amodra@gmail.com> + PR 26466 * mep-relocs.pl (emit_apply): Handle HI16S adjustment. Use "u" variable and rewrite signed overflow check. diff --git a/bfd/elfxx-mips.c b/bfd/elfxx-mips.c index bc08435..c0970fb 100644 --- a/bfd/elfxx-mips.c +++ b/bfd/elfxx-mips.c @@ -698,13 +698,13 @@ typedef struct /* These are the constants used to swap the bitfields in a crinfo. */ -#define CRINFO_CTYPE (0x1) +#define CRINFO_CTYPE (0x1U) #define CRINFO_CTYPE_SH (31) -#define CRINFO_RTYPE (0xf) +#define CRINFO_RTYPE (0xfU) #define CRINFO_RTYPE_SH (27) -#define CRINFO_DIST2TO (0xff) +#define CRINFO_DIST2TO (0xffU) #define CRINFO_DIST2TO_SH (19) -#define CRINFO_RELVADDR (0x7ffff) +#define CRINFO_RELVADDR (0x7ffffU) #define CRINFO_RELVADDR_SH (0) /* A compact relocation info has long (3 words) or short (2 words) @@ -5367,7 +5367,7 @@ mips_elf_nullify_got_load (bfd *input_bfd, bfd_byte *contents, if (mips16_reloc_p (r_type) && (((x >> 22) & 0x3ff) == 0x3d3 /* LW */ || ((x >> 22) & 0x3ff) == 0x3c7)) /* LD */ - x = (0x3cd << 22) | (x & (7 << 16)) << 3; /* LI */ + x = (0x3cdU << 22) | (x & (7 << 16)) << 3; /* LI */ else if (micromips_reloc_p (r_type) && ((x >> 26) & 0x37) == 0x37) /* LW/LD */ x = (0xc << 26) | (x & (0x1f << 21)); /* ADDIU */ |