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authorJim Blandy <jimb@codesourcery.com>2001-12-20 08:50:47 +0000
committerJim Blandy <jimb@codesourcery.com>2001-12-20 08:50:47 +0000
commitc5e243bbc4b8448f588b175364eed888a2f56a2a (patch)
treeb4ce0085602a6be115310a5f6c1ce58cd98ee461 /gdb/s390-tdep.c
parent2e7db62a77bdb3dc27338454cc8c170ebcb19092 (diff)
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* s390-tdep.c (s390_readinstruction): Don't call
info->read_memory_func to read zero bytes. Some targets' xfer_memory functions can't cope with that.
Diffstat (limited to 'gdb/s390-tdep.c')
-rw-r--r--gdb/s390-tdep.c7
1 files changed, 5 insertions, 2 deletions
diff --git a/gdb/s390-tdep.c b/gdb/s390-tdep.c
index 02786ec..db7692b 100644
--- a/gdb/s390-tdep.c
+++ b/gdb/s390-tdep.c
@@ -132,8 +132,11 @@ s390_readinstruction (bfd_byte instr[], CORE_ADDR at,
if ((*info->read_memory_func) (at, &instr[0], 2, info))
return -1;
instrlen = s390_instrlen[instr[0] >> 6];
- if ((*info->read_memory_func) (at + 2, &instr[2], instrlen - 2, info))
- return -1;
+ if (instrlen > 2)
+ {
+ if ((*info->read_memory_func) (at + 2, &instr[2], instrlen - 2, info))
+ return -1;
+ }
return instrlen;
}