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Fix call functions command bug in 64 bits programs for AIX

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In AIX for 64 bit programs we need to zero extend variables
of integer or enum or char data type.

Otherwise a zero will get dumped in the register as we memset
our word to 0 and we copy non zero extended contents to the cache.
This commit is contained in:
Aditya Vidyadhar Kamath 2022-11-17 13:50:35 +01:00 committed by Ulrich Weigand
parent 1c01b23603
commit 7aae1a86b3
1 changed files with 9 additions and 1 deletions
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10
gdb/rs6000-aix-tdep.c
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@ -400,7 +400,15 @@ rs6000_push_dummy_call (struct gdbarch *gdbarch, struct value *function,
gdb_byte word[PPC_MAX_REGISTER_SIZE];
memset (word, 0, reg_size);
memcpy (word, value_contents (arg).data (), len);
if (type->code () == TYPE_CODE_INT
|| type->code () == TYPE_CODE_ENUM
|| type->code () == TYPE_CODE_BOOL
|| type->code () == TYPE_CODE_CHAR)
/* Sign or zero extend the "int" into a "word". */
store_unsigned_integer (word, reg_size, byte_order,
unpack_long (type, value_contents (arg).data ()));
else
memcpy (word, value_contents (arg).data (), len);
regcache->cooked_write (tdep->ppc_gp0_regnum + 3 +ii, word);
}
++argno;