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[Qemu-devel] [PATCH 3/7] disas: cris: Fix 0 buffer length case
From: |
Peter Crosthwaite |
Subject: |
[Qemu-devel] [PATCH 3/7] disas: cris: Fix 0 buffer length case |
Date: |
Mon, 4 May 2015 21:45:00 -0700 |
Cris has the complication of variable length instructions and has
a check in place to clamp memory reads in case the disas request
doesn't have enough bytes for the instruction being disas'd. This
breaks down in the case where disassembling for the monitor where
the buffer length is defaulted to 0.
The buffer length should never be zero for a regular target_disas,
so we can safely assume the 0 case is for the monitor in which case
consider the buffer length to be the max for cris instructions.
Signed-off-by: Peter Crosthwaite <address@hidden>
---
disas/cris.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/disas/cris.c b/disas/cris.c
index e6cff7a..1b76a09 100644
--- a/disas/cris.c
+++ b/disas/cris.c
@@ -2575,9 +2575,9 @@ print_insn_cris_generic (bfd_vma memaddr,
If we can't get any data, or we do not get enough data, we print
the error message. */
- nbytes = info->buffer_length;
- if (nbytes > MAX_BYTES_PER_CRIS_INSN)
- nbytes = MAX_BYTES_PER_CRIS_INSN;
+ nbytes = info->buffer_length ? info->buffer_length
+ : MAX_BYTES_PER_CRIS_INSN;
+ nbytes = MIN(nbytes, MAX_BYTES_PER_CRIS_INSN);
status = (*info->read_memory_func) (memaddr, buffer, nbytes, info);
/* If we did not get all we asked for, then clear the rest.
--
1.9.1
- [Qemu-devel] [PATCH 0/7] disas: Unify target_disas and monitor_disas, Peter Crosthwaite, 2015/05/05
- [Qemu-devel] [PATCH 2/7] disas: microblaze: Migrate setup to common code, Peter Crosthwaite, 2015/05/05
- [Qemu-devel] [PATCH 3/7] disas: cris: Fix 0 buffer length case,
Peter Crosthwaite <=
- [Qemu-devel] [PATCH 1/7] disas: Create factored out fn for monitor and target disas, Peter Crosthwaite, 2015/05/05
- [Qemu-devel] [PATCH 4/7] disas: cris: Migrate setup to common code, Peter Crosthwaite, 2015/05/05
- [Qemu-devel] [PATCH 5/7] disas: arm-a64: Make printfer and stream variable, Peter Crosthwaite, 2015/05/05
- [Qemu-devel] [PATCH 6/7] monitor: "i": Add ARM specifics, Peter Crosthwaite, 2015/05/05