static void
write_header( libspectrum_byte **buffer, libspectrum_byte **ptr,
size_t *length, libspectrum_snap *snap )
{
libspectrum_make_room( buffer, LIBSPECTRUM_SNA_HEADER_LENGTH, ptr, length );
*(*ptr)++ = libspectrum_snap_i ( snap );
libspectrum_write_word( ptr, libspectrum_snap_hl_( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_de_( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_bc_( snap ) );
*(*ptr)++ = libspectrum_snap_f_( snap );
*(*ptr)++ = libspectrum_snap_a_( snap );
libspectrum_write_word( ptr, libspectrum_snap_hl ( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_de ( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_bc ( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_iy ( snap ) );
libspectrum_write_word( ptr, libspectrum_snap_ix ( snap ) );
*(*ptr)++ = libspectrum_snap_iff2( snap ) ? 0x04 : 0x00;
*(*ptr)++ = libspectrum_snap_r ( snap );
*(*ptr)++ = libspectrum_snap_f ( snap );
*(*ptr)++ = libspectrum_snap_a ( snap );
libspectrum_write_word( ptr, libspectrum_snap_sp ( snap ) );
*(*ptr)++ = libspectrum_snap_im( snap );
*(*ptr)++ = libspectrum_snap_out_ula( snap ) & 0x07;
}
static void
fix_snapshot( libspectrum_snap *snap )
{
libspectrum_byte a = libspectrum_snap_a( snap );
libspectrum_byte f = libspectrum_snap_f( snap );
libspectrum_snap_set_a( snap, f );
libspectrum_snap_set_f( snap, a );
a = libspectrum_snap_a_( snap );
f = libspectrum_snap_f_( snap );
libspectrum_snap_set_a_( snap, f );
libspectrum_snap_set_f_( snap, a );
}
/* Routines for transferring the Z80 contents to and from snapshots */
static void
z80_from_snapshot( libspectrum_snap *snap )
{
A = libspectrum_snap_a ( snap ); F = libspectrum_snap_f ( snap );
A_ = libspectrum_snap_a_( snap ); F_ = libspectrum_snap_f_( snap );
BC = libspectrum_snap_bc ( snap ); DE = libspectrum_snap_de ( snap );
HL = libspectrum_snap_hl ( snap ); BC_ = libspectrum_snap_bc_( snap );
DE_ = libspectrum_snap_de_( snap ); HL_ = libspectrum_snap_hl_( snap );
IX = libspectrum_snap_ix( snap ); IY = libspectrum_snap_iy( snap );
I = libspectrum_snap_i ( snap ); R = R7 = libspectrum_snap_r( snap );
SP = libspectrum_snap_sp( snap ); PC = libspectrum_snap_pc( snap );
IFF1 = libspectrum_snap_iff1( snap ); IFF2 = libspectrum_snap_iff2( snap );
IM = libspectrum_snap_im( snap );
z80.halted = libspectrum_snap_halted( snap );
z80.interrupts_enabled_at =
libspectrum_snap_last_instruction_ei( snap ) ? z80_tstates : -1;
}