mirror of
https://github.com/trezor/trezor-firmware.git
synced 2024-12-24 15:28:10 +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
/*
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* This file is part of the Trezor project, https://trezor.io/
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*
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* Copyright (c) SatoshiLabs
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*
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* This program is free software: you can redistribute it and/or modify
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* it under the terms of the GNU General Public License as published by
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* the Free Software Foundation, either version 3 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <string.h>
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#include "memzero.h"
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#include "py/objint.h"
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static bool mpz_as_ll_checked(const mpz_t *i, long long *value) {
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// Analogue of `mpz_as_int_checked` from mpz.c
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unsigned long long val = 0;
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mpz_dig_t *d = i->dig + i->len;
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while (d-- > i->dig) {
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if (val > (~0x8000000000000000 >> MPZ_DIG_SIZE)) {
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// will overflow
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*value = 0;
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return false;
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}
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val = (val << MPZ_DIG_SIZE) | *d;
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}
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if (i->neg != 0) {
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val = -val;
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}
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*value = val;
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return true;
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}
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bool trezor_obj_get_ll_checked(mp_obj_t obj, long long *value) {
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if (mp_obj_is_small_int(obj)) {
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// Value is fitting in a small int range. Return it directly.
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*value = MP_OBJ_SMALL_INT_VALUE(obj);
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return true;
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} else if (mp_obj_is_type(obj, &mp_type_int)) {
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// Value is not fitting into small int range, but is an integer.
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mp_obj_int_t *self = MP_OBJ_TO_PTR(obj);
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// Try to get the long long value out of the MPZ struct.
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return mpz_as_ll_checked(&self->mpz, value);
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} else {
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// Value is not integer.
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*value = 0;
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return false;
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}
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}
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