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| author | Jim Blandy <jimb@codesourcery.com> | 2001-12-20 08:50:47 +0000 |
|---|---|---|
| committer | Jim Blandy <jimb@codesourcery.com> | 2001-12-20 08:50:47 +0000 |
| commit | c5e243bbc4b8448f588b175364eed888a2f56a2a (patch) | |
| tree | b4ce0085602a6be115310a5f6c1ce58cd98ee461 | |
| parent | 2e7db62a77bdb3dc27338454cc8c170ebcb19092 (diff) | |
| download | gdb-c5e243bbc4b8448f588b175364eed888a2f56a2a.zip gdb-c5e243bbc4b8448f588b175364eed888a2f56a2a.tar.gz gdb-c5e243bbc4b8448f588b175364eed888a2f56a2a.tar.bz2 | |
* 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.
| -rw-r--r-- | gdb/ChangeLog | 4 | ||||
| -rw-r--r-- | gdb/s390-tdep.c | 7 |
2 files changed, 9 insertions, 2 deletions
diff --git a/gdb/ChangeLog b/gdb/ChangeLog index deb527a..d4888d3 100644 --- a/gdb/ChangeLog +++ b/gdb/ChangeLog @@ -1,5 +1,9 @@ 2001-12-19 Jim Blandy <jimb@redhat.com> + * 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. + * gdbarch.sh (TARGET_CHAR_SIGNED): New macro. * gdbarch.c, gdbarch.h: Regenerated. * gdbtypes.c (build_gdbtypes): If TARGET_CHAR_SIGNED is zero, 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; } |