mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-10-18 22:09:07 +00:00
6257584951
core: Remove dangling module decls
core: Use new Cargo feature resolver, use external MacOS debug info
core: Rust docs improvements
core: Upgrade bindgen
core: Add test target to Rust
ci: build rust sources
build(core): .ARM.exidx.text.__aeabi_ui2f in t1 firmware size
It's an unwind table for softfloat function inserted by rustc, probably
can be removed to save 8 bytes:
599c58db70/link.x.in (L175-L182)
scons: Remove dead code
core: Move Rust target to build/rust
core: Replace extern with a FFI version
core: Add some explanatory Rust comments
core: Use correct path for the Rust lib
core: Remove Buffer::as_mut()
Mutable buffer access needs MP_BUFFER_WRITE flag. TBD in the Protobuf PR.
core: Improve docs for micropython::Buffer
core: Minor Rust docs changes
core: Rewrite trezor_obj_get_ll_checked
core: Fix incorrect doc comment
core: Remove cc from deps
fixup! core: Rewrite trezor_obj_get_ll_checked
core: update safety comments
65 lines
1.8 KiB
C
65 lines
1.8 KiB
C
/*
|
|
* This file is part of the Trezor project, https://trezor.io/
|
|
*
|
|
* Copyright (c) SatoshiLabs
|
|
*
|
|
* This program is free software: you can redistribute it and/or modify
|
|
* it under the terms of the GNU General Public License as published by
|
|
* the Free Software Foundation, either version 3 of the License, or
|
|
* (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
* You should have received a copy of the GNU General Public License
|
|
* along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include <string.h>
|
|
|
|
#include "memzero.h"
|
|
#include "py/objint.h"
|
|
|
|
static bool mpz_as_ll_checked(const mpz_t *i, long long *value) {
|
|
// Analogue of `mpz_as_int_checked` from mpz.c
|
|
|
|
unsigned long long val = 0;
|
|
mpz_dig_t *d = i->dig + i->len;
|
|
|
|
while (d-- > i->dig) {
|
|
if (val > (~0x8000000000000000 >> MPZ_DIG_SIZE)) {
|
|
// will overflow
|
|
*value = 0;
|
|
return false;
|
|
}
|
|
val = (val << MPZ_DIG_SIZE) | *d;
|
|
}
|
|
|
|
if (i->neg != 0) {
|
|
val = -val;
|
|
}
|
|
|
|
*value = val;
|
|
return true;
|
|
}
|
|
|
|
bool trezor_obj_get_ll_checked(mp_obj_t obj, long long *value) {
|
|
if (mp_obj_is_small_int(obj)) {
|
|
// Value is fitting in a small int range. Return it directly.
|
|
*value = MP_OBJ_SMALL_INT_VALUE(obj);
|
|
return true;
|
|
|
|
} else if (mp_obj_is_type(obj, &mp_type_int)) {
|
|
// Value is not fitting into small int range, but is an integer.
|
|
mp_obj_int_t *self = MP_OBJ_TO_PTR(obj);
|
|
// Try to get the long long value out of the MPZ struct.
|
|
return mpz_as_ll_checked(&self->mpz, value);
|
|
} else {
|
|
// Value is not integer.
|
|
*value = 0;
|
|
return false;
|
|
}
|
|
}
|