Signed-off-by: Eric Pouech eric.pouech@gmail.com
--- programs/winedbg/memory.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+)
diff --git a/programs/winedbg/memory.c b/programs/winedbg/memory.c index b6182da9d2d..64271c46780 100644 --- a/programs/winedbg/memory.c +++ b/programs/winedbg/memory.c @@ -317,6 +317,23 @@ BOOL memory_store_integer(const struct dbg_lvalue* lvalue, dbg_lgint_t val) { DWORD64 size; if (!types_get_info(&lvalue->type, TI_GET_LENGTH, &size)) return FALSE; + if (lvalue->bitlen) + { + struct dbg_lvalue alt_lvalue = *lvalue; + dbg_lguint_t mask, dst; + + /* FIXME: this test isn't sufficient, depending on start of bitfield + * (ie a 64 bit field can spread across 9 bytes) + */ + if (lvalue->bitlen > 8 * sizeof(dbg_lgint_t)) return FALSE; + /* mask is 1 where bitfield is present, 0 outside */ + mask = (~(dbg_lguint_t)0 >> (sizeof(val) * 8 - lvalue->bitlen)) << (lvalue->bitstart & 7); + alt_lvalue.addr.Offset += lvalue->bitstart >> 3; + val <<= lvalue->bitstart & 7; + if (!memory_read_value(&alt_lvalue, (unsigned)size, &dst)) return FALSE; + val = (dst & ~mask) | (val & mask); + return memory_write_value(&alt_lvalue, (unsigned)size, &val); + } /* this is simple if we're on a little endian CPU */ return memory_write_value(lvalue, (unsigned)size, &val); }