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simio: fix uninitialized memory use in IO reads.

This commit is contained in:
Daniel Beer 2018-11-28 08:44:49 +13:00
parent 66dc9057e2
commit 3bc5cb2686
1 changed files with 15 additions and 1 deletions
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16
simio/simio.c
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@ -344,10 +344,23 @@ int name(address_t addr, datatype data) { \
static IO_REQUEST_FUNC(name, method, datatype)
IO_REQUEST_FUNC(simio_write, write, uint16_t)
IO_REQUEST_FUNC(simio_read, read, uint16_t *)
IO_REQUEST_FUNC(simio_read_device, read, uint16_t *)
IO_REQUEST_FUNC_S(simio_write_b_device, write_b, uint8_t)
IO_REQUEST_FUNC_S(simio_read_b_device, read_b, uint8_t *)
int simio_read(address_t addr, uint16_t *data)
{
addr &= ~1;
if (addr < 16) {
*data = ((uint16_t)sfr_data[addr]) |
(((uint16_t)sfr_data[addr + 1]) << 8);
return 0;
}
*data = 0;
return simio_read_device(addr, data);
}
int simio_write_b(address_t addr, uint8_t data)
{
if (addr < 16) {
@ -365,6 +378,7 @@ int simio_read_b(address_t addr, uint8_t *data)
return 0;
}
*data = 0;
return simio_read_b_device(addr, data);
}