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Prevent invalid array accesses when disassembling a corrupt bfin binary. 

PR binutils/21586
	* bfin-dis.c (gregs): Clip index to prevent overflow.
	(regs): Likewise.
	(regs_lo): Likewise.
	(regs_hi): Likewise.
This commit is contained in:
Nick Clifton 2017-06-15 11:52:02 +01:00
parent 37de058ab2
commit 08c7881b81
2 changed files with 12 additions and 4 deletions
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8
opcodes/ChangeLog
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@ -1,3 +1,11 @@
2017-06-15 Nick Clifton <nickc@redhat.com>
PR binutils/21586
* bfin-dis.c (gregs): Clip index to prevent overflow.
(regs): Likewise.
(regs_lo): Likewise.
(regs_hi): Likewise.
2017-06-14 Nick Clifton <nickc@redhat.com>
PR binutils/21576

8
opcodes/bfin-dis.c
View File

@ -350,7 +350,7 @@ static const enum machine_registers decode_gregs[] =
REG_P0, REG_P1, REG_P2, REG_P3, REG_P4, REG_P5, REG_SP, REG_FP,
};
#define gregs(x, i) REGNAME (decode_gregs[((i) << 3) | (x)])
#define gregs(x, i) REGNAME (decode_gregs[(((i) << 3) | (x)) & 15])
/* [dregs pregs (iregs mregs) (bregs lregs)]. */
static const enum machine_registers decode_regs[] =
@ -361,7 +361,7 @@ static const enum machine_registers decode_regs[] =
REG_B0, REG_B1, REG_B2, REG_B3, REG_L0, REG_L1, REG_L2, REG_L3,
};
#define regs(x, i) REGNAME (decode_regs[((i) << 3) | (x)])
#define regs(x, i) REGNAME (decode_regs[(((i) << 3) | (x)) & 31])
/* [dregs pregs (iregs mregs) (bregs lregs) Low Half]. */
static const enum machine_registers decode_regs_lo[] =
@ -372,7 +372,7 @@ static const enum machine_registers decode_regs_lo[] =
REG_BL0, REG_BL1, REG_BL2, REG_BL3, REG_LL0, REG_LL1, REG_LL2, REG_LL3,
};
#define regs_lo(x, i) REGNAME (decode_regs_lo[((i) << 3) | (x)])
#define regs_lo(x, i) REGNAME (decode_regs_lo[(((i) << 3) | (x)) & 31])
/* [dregs pregs (iregs mregs) (bregs lregs) High Half]. */
static const enum machine_registers decode_regs_hi[] =
@ -383,7 +383,7 @@ static const enum machine_registers decode_regs_hi[] =
REG_BH0, REG_BH1, REG_BH2, REG_BH3, REG_LH0, REG_LH1, REG_LH2, REG_LH3,
};
#define regs_hi(x, i) REGNAME (decode_regs_hi[((i) << 3) | (x)])
#define regs_hi(x, i) REGNAME (decode_regs_hi[(((i) << 3) | (x)) & 31])
static const enum machine_registers decode_statbits[] =
{