forked from M-Labs/artiq-zynq
Libunwind: build libunwind with rust bindings
parent
9282dcffdb
commit
6be44c3483
|
|
@ -35,6 +35,12 @@ version = "1.3.4"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "08c48aae112d48ed9f069b33538ea9e3e90aa263cfa3d1c24309612b1f7472de"
|
||||
|
||||
[[package]]
|
||||
name = "cc"
|
||||
version = "1.0.54"
|
||||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "7bbb73db36c1246e9034e307d0fba23f9a2e251faa47ade70c1bd252220c8311"
|
||||
|
||||
[[package]]
|
||||
name = "cfg-if"
|
||||
version = "0.1.10"
|
||||
|
|
@ -209,10 +215,18 @@ dependencies = [
|
|||
"volatile-register",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "libc"
|
||||
version = "0.1.0"
|
||||
dependencies = [
|
||||
"cc",
|
||||
"libboard_zynq",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "libcortex_a9"
|
||||
version = "0.0.0"
|
||||
source = "git+https://git.m-labs.hk/M-Labs/zc706.git#ec252b099cf67a51ba9daa72b3292db8c21ba1b8"
|
||||
source = "git+https://git.m-labs.hk/M-Labs/zc706.git#6195ad40c334a847cd01cd4adadf6b8f8d730908"
|
||||
dependencies = [
|
||||
"bit_field",
|
||||
"libregister",
|
||||
|
|
@ -369,11 +383,13 @@ dependencies = [
|
|||
"futures",
|
||||
"libasync",
|
||||
"libboard_zynq",
|
||||
"libc",
|
||||
"libcortex_a9",
|
||||
"libsupport_zynq",
|
||||
"log",
|
||||
"num-derive",
|
||||
"num-traits",
|
||||
"unwind",
|
||||
"void",
|
||||
]
|
||||
|
||||
|
|
@ -416,6 +432,16 @@ version = "0.2.1"
|
|||
source = "registry+https://github.com/rust-lang/crates.io-index"
|
||||
checksum = "f7fe0bb3479651439c9112f72b6c505038574c9fbb575ed1bf3b797fa39dd564"
|
||||
|
||||
[[package]]
|
||||
name = "unwind"
|
||||
version = "0.0.0"
|
||||
dependencies = [
|
||||
"cc",
|
||||
"cfg-if",
|
||||
"compiler_builtins",
|
||||
"libc",
|
||||
]
|
||||
|
||||
[[package]]
|
||||
name = "vcell"
|
||||
version = "0.1.2"
|
||||
|
|
|
|||
|
|
@ -1,7 +1,9 @@
|
|||
[workspace]
|
||||
members = [
|
||||
"libc",
|
||||
"libdyld",
|
||||
"libcoreio",
|
||||
"libunwind",
|
||||
"runtime",
|
||||
"szl"
|
||||
]
|
||||
|
|
|
|||
|
|
@ -34,6 +34,7 @@
|
|||
#define __need_NULL
|
||||
#include <sys/cdefs.h>
|
||||
#include <stddef.h>
|
||||
#include <printf.h>
|
||||
|
||||
/* typedef only __gnuc_va_list, used throughout the header */
|
||||
#define __need___va_list
|
||||
|
|
|
|||
|
|
@ -0,0 +1,14 @@
|
|||
[package]
|
||||
name = "libc"
|
||||
version = "0.1.0"
|
||||
authors = ["pca006132 <john.lck40@gmail.com>"]
|
||||
edition = "2018"
|
||||
build = "build.rs"
|
||||
|
||||
# See more keys and their definitions at https://doc.rust-lang.org/cargo/reference/manifest.html
|
||||
|
||||
[dependencies]
|
||||
libboard_zynq = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
|
||||
|
||||
[build-dependencies]
|
||||
cc = { version = "1.0.1" }
|
||||
|
|
@ -0,0 +1,40 @@
|
|||
fn main() {
|
||||
println!("cargo:rerun-if-changed=build.rs");
|
||||
libc::compile();
|
||||
}
|
||||
|
||||
mod libc {
|
||||
use std::path::Path;
|
||||
pub fn compile() {
|
||||
let cfg = &mut cc::Build::new();
|
||||
cfg.cpp(false);
|
||||
cfg.warnings(false);
|
||||
|
||||
// still have problem compiling the libunwind
|
||||
cfg.flag("-nostdlib");
|
||||
cfg.flag("-ffreestanding");
|
||||
cfg.flag("-fno-PIC");
|
||||
cfg.flag("-isystem../include");
|
||||
cfg.flag("-fno-stack-protector");
|
||||
cfg.flag("--target=armv7-none-eabihf");
|
||||
|
||||
cfg.flag("-std=c99");
|
||||
cfg.flag("-fstrict-aliasing");
|
||||
cfg.flag("-funwind-tables");
|
||||
cfg.flag("-fvisibility=hidden");
|
||||
cfg.flag("-U_FORTIFY_SOURCE");
|
||||
cfg.define("_FORTIFY_SOURCE", Some("0"));
|
||||
|
||||
let unwind_sources = vec![
|
||||
"printf.c"
|
||||
];
|
||||
|
||||
let root = Path::new("../libc");
|
||||
for src in unwind_sources {
|
||||
println!("cargo:rerun-if-changed={}", src);
|
||||
cfg.file(root.join("src").join(src));
|
||||
}
|
||||
|
||||
cfg.compile("printf");
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,15 @@
|
|||
// Helper crate for dealing with c ffi
|
||||
#![allow(non_camel_case_types)]
|
||||
#![no_std]
|
||||
|
||||
use libboard_zynq::stdio;
|
||||
|
||||
pub type c_int = i32;
|
||||
pub type uintptr_t = usize;
|
||||
pub type c_void = core::ffi::c_void;
|
||||
|
||||
#[no_mangle]
|
||||
extern "C" fn _putchar(byte: u8) {
|
||||
let mut uart = stdio::get_uart();
|
||||
uart.write_byte(byte);
|
||||
}
|
||||
|
|
@ -0,0 +1,913 @@
|
|||
///////////////////////////////////////////////////////////////////////////////
|
||||
// \author (c) Marco Paland (info@paland.com)
|
||||
// 2014-2019, PALANDesign Hannover, Germany
|
||||
//
|
||||
// \license The MIT License (MIT)
|
||||
//
|
||||
// Permission is hereby granted, free of charge, to any person obtaining a copy
|
||||
// of this software and associated documentation files (the "Software"), to deal
|
||||
// in the Software without restriction, including without limitation the rights
|
||||
// to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
|
||||
// copies of the Software, and to permit persons to whom the Software is
|
||||
// furnished to do so, subject to the following conditions:
|
||||
//
|
||||
// The above copyright notice and this permission notice shall be included in
|
||||
// all copies or substantial portions of the Software.
|
||||
//
|
||||
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
|
||||
// IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
|
||||
// FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
|
||||
// AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
|
||||
// LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
|
||||
// OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
|
||||
// THE SOFTWARE.
|
||||
//
|
||||
// \brief Tiny printf, sprintf and (v)snprintf implementation, optimized for speed on
|
||||
// embedded systems with a very limited resources. These routines are thread
|
||||
// safe and reentrant!
|
||||
// Use this instead of the bloated standard/newlib printf cause these use
|
||||
// malloc for printf (and may not be thread safe).
|
||||
//
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
#include <stdbool.h>
|
||||
#include <stdint.h>
|
||||
#include <stdio.h>
|
||||
|
||||
// define this globally (e.g. gcc -DPRINTF_INCLUDE_CONFIG_H ...) to include the
|
||||
// printf_config.h header file
|
||||
// default: undefined
|
||||
#ifdef PRINTF_INCLUDE_CONFIG_H
|
||||
#include "printf_config.h"
|
||||
#endif
|
||||
|
||||
|
||||
// 'ntoa' conversion buffer size, this must be big enough to hold one converted
|
||||
// numeric number including padded zeros (dynamically created on stack)
|
||||
// default: 32 byte
|
||||
#ifndef PRINTF_NTOA_BUFFER_SIZE
|
||||
#define PRINTF_NTOA_BUFFER_SIZE 32U
|
||||
#endif
|
||||
|
||||
// 'ftoa' conversion buffer size, this must be big enough to hold one converted
|
||||
// float number including padded zeros (dynamically created on stack)
|
||||
// default: 32 byte
|
||||
#ifndef PRINTF_FTOA_BUFFER_SIZE
|
||||
#define PRINTF_FTOA_BUFFER_SIZE 32U
|
||||
#endif
|
||||
|
||||
// support for the floating point type (%f)
|
||||
// default: activated
|
||||
#ifndef PRINTF_DISABLE_SUPPORT_FLOAT
|
||||
#define PRINTF_SUPPORT_FLOAT
|
||||
#endif
|
||||
|
||||
// support for exponential floating point notation (%e/%g)
|
||||
// default: activated
|
||||
#ifndef PRINTF_DISABLE_SUPPORT_EXPONENTIAL
|
||||
#define PRINTF_SUPPORT_EXPONENTIAL
|
||||
#endif
|
||||
|
||||
// define the default floating point precision
|
||||
// default: 6 digits
|
||||
#ifndef PRINTF_DEFAULT_FLOAT_PRECISION
|
||||
#define PRINTF_DEFAULT_FLOAT_PRECISION 6U
|
||||
#endif
|
||||
|
||||
// define the largest float suitable to print with %f
|
||||
// default: 1e9
|
||||
#ifndef PRINTF_MAX_FLOAT
|
||||
#define PRINTF_MAX_FLOAT 1e9
|
||||
#endif
|
||||
|
||||
// support for the long long types (%llu or %p)
|
||||
// default: activated
|
||||
#ifndef PRINTF_DISABLE_SUPPORT_LONG_LONG
|
||||
#define PRINTF_SUPPORT_LONG_LONG
|
||||
#endif
|
||||
|
||||
// support for the ptrdiff_t type (%t)
|
||||
// ptrdiff_t is normally defined in <stddef.h> as long or long long type
|
||||
// default: activated
|
||||
#ifndef PRINTF_DISABLE_SUPPORT_PTRDIFF_T
|
||||
#define PRINTF_SUPPORT_PTRDIFF_T
|
||||
#endif
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
// internal flag definitions
|
||||
#define FLAGS_ZEROPAD (1U << 0U)
|
||||
#define FLAGS_LEFT (1U << 1U)
|
||||
#define FLAGS_PLUS (1U << 2U)
|
||||
#define FLAGS_SPACE (1U << 3U)
|
||||
#define FLAGS_HASH (1U << 4U)
|
||||
#define FLAGS_UPPERCASE (1U << 5U)
|
||||
#define FLAGS_CHAR (1U << 6U)
|
||||
#define FLAGS_SHORT (1U << 7U)
|
||||
#define FLAGS_LONG (1U << 8U)
|
||||
#define FLAGS_LONG_LONG (1U << 9U)
|
||||
#define FLAGS_PRECISION (1U << 10U)
|
||||
#define FLAGS_ADAPT_EXP (1U << 11U)
|
||||
|
||||
|
||||
// import float.h for DBL_MAX
|
||||
#if defined(PRINTF_SUPPORT_FLOAT)
|
||||
#include <float.h>
|
||||
#endif
|
||||
|
||||
|
||||
// output function type
|
||||
typedef void (*out_fct_type)(char character, void* buffer, size_t idx, size_t maxlen);
|
||||
|
||||
|
||||
// wrapper (used as buffer) for output function type
|
||||
typedef struct {
|
||||
void (*fct)(char character, void* arg);
|
||||
void* arg;
|
||||
} out_fct_wrap_type;
|
||||
|
||||
|
||||
// internal buffer output
|
||||
static inline void _out_buffer(char character, void* buffer, size_t idx, size_t maxlen)
|
||||
{
|
||||
if (idx < maxlen) {
|
||||
((char*)buffer)[idx] = character;
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// internal null output
|
||||
static inline void _out_null(char character, void* buffer, size_t idx, size_t maxlen)
|
||||
{
|
||||
(void)character; (void)buffer; (void)idx; (void)maxlen;
|
||||
}
|
||||
|
||||
|
||||
// internal _putchar wrapper
|
||||
static inline void _out_char(char character, void* buffer, size_t idx, size_t maxlen)
|
||||
{
|
||||
(void)buffer; (void)idx; (void)maxlen;
|
||||
if (character) {
|
||||
_putchar(character);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// internal output function wrapper
|
||||
static inline void _out_fct(char character, void* buffer, size_t idx, size_t maxlen)
|
||||
{
|
||||
(void)idx; (void)maxlen;
|
||||
if (character) {
|
||||
// buffer is the output fct pointer
|
||||
((out_fct_wrap_type*)buffer)->fct(character, ((out_fct_wrap_type*)buffer)->arg);
|
||||
}
|
||||
}
|
||||
|
||||
|
||||
// internal secure strlen
|
||||
// \return The length of the string (excluding the terminating 0) limited by 'maxsize'
|
||||
static inline unsigned int _strnlen_s(const char* str, size_t maxsize)
|
||||
{
|
||||
const char* s;
|
||||
for (s = str; *s && maxsize--; ++s);
|
||||
return (unsigned int)(s - str);
|
||||
}
|
||||
|
||||
|
||||
// internal test if char is a digit (0-9)
|
||||
// \return true if char is a digit
|
||||
static inline bool _is_digit(char ch)
|
||||
{
|
||||
return (ch >= '0') && (ch <= '9');
|
||||
}
|
||||
|
||||
|
||||
// internal ASCII string to unsigned int conversion
|
||||
static unsigned int _atoi(const char** str)
|
||||
{
|
||||
unsigned int i = 0U;
|
||||
while (_is_digit(**str)) {
|
||||
i = i * 10U + (unsigned int)(*((*str)++) - '0');
|
||||
}
|
||||
return i;
|
||||
}
|
||||
|
||||
|
||||
// output the specified string in reverse, taking care of any zero-padding
|
||||
static size_t _out_rev(out_fct_type out, char* buffer, size_t idx, size_t maxlen, const char* buf, size_t len, unsigned int width, unsigned int flags)
|
||||
{
|
||||
const size_t start_idx = idx;
|
||||
|
||||
// pad spaces up to given width
|
||||
if (!(flags & FLAGS_LEFT) && !(flags & FLAGS_ZEROPAD)) {
|
||||
for (size_t i = len; i < width; i++) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
|
||||
// reverse string
|
||||
while (len) {
|
||||
out(buf[--len], buffer, idx++, maxlen);
|
||||
}
|
||||
|
||||
// append pad spaces up to given width
|
||||
if (flags & FLAGS_LEFT) {
|
||||
while (idx - start_idx < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
|
||||
return idx;
|
||||
}
|
||||
|
||||
|
||||
// internal itoa format
|
||||
static size_t _ntoa_format(out_fct_type out, char* buffer, size_t idx, size_t maxlen, char* buf, size_t len, bool negative, unsigned int base, unsigned int prec, unsigned int width, unsigned int flags)
|
||||
{
|
||||
// pad leading zeros
|
||||
if (!(flags & FLAGS_LEFT)) {
|
||||
if (width && (flags & FLAGS_ZEROPAD) && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
|
||||
width--;
|
||||
}
|
||||
while ((len < prec) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = '0';
|
||||
}
|
||||
while ((flags & FLAGS_ZEROPAD) && (len < width) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = '0';
|
||||
}
|
||||
}
|
||||
|
||||
// handle hash
|
||||
if (flags & FLAGS_HASH) {
|
||||
if (!(flags & FLAGS_PRECISION) && len && ((len == prec) || (len == width))) {
|
||||
len--;
|
||||
if (len && (base == 16U)) {
|
||||
len--;
|
||||
}
|
||||
}
|
||||
if ((base == 16U) && !(flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = 'x';
|
||||
}
|
||||
else if ((base == 16U) && (flags & FLAGS_UPPERCASE) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = 'X';
|
||||
}
|
||||
else if ((base == 2U) && (len < PRINTF_NTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = 'b';
|
||||
}
|
||||
if (len < PRINTF_NTOA_BUFFER_SIZE) {
|
||||
buf[len++] = '0';
|
||||
}
|
||||
}
|
||||
|
||||
if (len < PRINTF_NTOA_BUFFER_SIZE) {
|
||||
if (negative) {
|
||||
buf[len++] = '-';
|
||||
}
|
||||
else if (flags & FLAGS_PLUS) {
|
||||
buf[len++] = '+'; // ignore the space if the '+' exists
|
||||
}
|
||||
else if (flags & FLAGS_SPACE) {
|
||||
buf[len++] = ' ';
|
||||
}
|
||||
}
|
||||
|
||||
return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
|
||||
}
|
||||
|
||||
|
||||
// internal itoa for 'long' type
|
||||
static size_t _ntoa_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long value, bool negative, unsigned long base, unsigned int prec, unsigned int width, unsigned int flags)
|
||||
{
|
||||
char buf[PRINTF_NTOA_BUFFER_SIZE];
|
||||
size_t len = 0U;
|
||||
|
||||
// no hash for 0 values
|
||||
if (!value) {
|
||||
flags &= ~FLAGS_HASH;
|
||||
}
|
||||
|
||||
// write if precision != 0 and value is != 0
|
||||
if (!(flags & FLAGS_PRECISION) || value) {
|
||||
do {
|
||||
const char digit = (char)(value % base);
|
||||
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
|
||||
value /= base;
|
||||
} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
|
||||
}
|
||||
|
||||
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
|
||||
}
|
||||
|
||||
|
||||
// internal itoa for 'long long' type
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
static size_t _ntoa_long_long(out_fct_type out, char* buffer, size_t idx, size_t maxlen, unsigned long long value, bool negative, unsigned long long base, unsigned int prec, unsigned int width, unsigned int flags)
|
||||
{
|
||||
char buf[PRINTF_NTOA_BUFFER_SIZE];
|
||||
size_t len = 0U;
|
||||
|
||||
// no hash for 0 values
|
||||
if (!value) {
|
||||
flags &= ~FLAGS_HASH;
|
||||
}
|
||||
|
||||
// write if precision != 0 and value is != 0
|
||||
if (!(flags & FLAGS_PRECISION) || value) {
|
||||
do {
|
||||
const char digit = (char)(value % base);
|
||||
buf[len++] = digit < 10 ? '0' + digit : (flags & FLAGS_UPPERCASE ? 'A' : 'a') + digit - 10;
|
||||
value /= base;
|
||||
} while (value && (len < PRINTF_NTOA_BUFFER_SIZE));
|
||||
}
|
||||
|
||||
return _ntoa_format(out, buffer, idx, maxlen, buf, len, negative, (unsigned int)base, prec, width, flags);
|
||||
}
|
||||
#endif // PRINTF_SUPPORT_LONG_LONG
|
||||
|
||||
|
||||
#if defined(PRINTF_SUPPORT_FLOAT)
|
||||
|
||||
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
|
||||
// forward declaration so that _ftoa can switch to exp notation for values > PRINTF_MAX_FLOAT
|
||||
static size_t _etoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags);
|
||||
#endif
|
||||
|
||||
|
||||
// internal ftoa for fixed decimal floating point
|
||||
static size_t _ftoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags)
|
||||
{
|
||||
char buf[PRINTF_FTOA_BUFFER_SIZE];
|
||||
size_t len = 0U;
|
||||
double diff = 0.0;
|
||||
|
||||
// powers of 10
|
||||
static const double pow10[] = { 1, 10, 100, 1000, 10000, 100000, 1000000, 10000000, 100000000, 1000000000 };
|
||||
|
||||
// test for special values
|
||||
if (value != value)
|
||||
return _out_rev(out, buffer, idx, maxlen, "nan", 3, width, flags);
|
||||
if (value < -DBL_MAX)
|
||||
return _out_rev(out, buffer, idx, maxlen, "fni-", 4, width, flags);
|
||||
if (value > DBL_MAX)
|
||||
return _out_rev(out, buffer, idx, maxlen, (flags & FLAGS_PLUS) ? "fni+" : "fni", (flags & FLAGS_PLUS) ? 4U : 3U, width, flags);
|
||||
|
||||
// test for very large values
|
||||
// standard printf behavior is to print EVERY whole number digit -- which could be 100s of characters overflowing your buffers == bad
|
||||
if ((value > PRINTF_MAX_FLOAT) || (value < -PRINTF_MAX_FLOAT)) {
|
||||
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
|
||||
return _etoa(out, buffer, idx, maxlen, value, prec, width, flags);
|
||||
#else
|
||||
return 0U;
|
||||
#endif
|
||||
}
|
||||
|
||||
// test for negative
|
||||
bool negative = false;
|
||||
if (value < 0) {
|
||||
negative = true;
|
||||
value = 0 - value;
|
||||
}
|
||||
|
||||
// set default precision, if not set explicitly
|
||||
if (!(flags & FLAGS_PRECISION)) {
|
||||
prec = PRINTF_DEFAULT_FLOAT_PRECISION;
|
||||
}
|
||||
// limit precision to 9, cause a prec >= 10 can lead to overflow errors
|
||||
while ((len < PRINTF_FTOA_BUFFER_SIZE) && (prec > 9U)) {
|
||||
buf[len++] = '0';
|
||||
prec--;
|
||||
}
|
||||
|
||||
int whole = (int)value;
|
||||
double tmp = (value - whole) * pow10[prec];
|
||||
unsigned long frac = (unsigned long)tmp;
|
||||
diff = tmp - frac;
|
||||
|
||||
if (diff > 0.5) {
|
||||
++frac;
|
||||
// handle rollover, e.g. case 0.99 with prec 1 is 1.0
|
||||
if (frac >= pow10[prec]) {
|
||||
frac = 0;
|
||||
++whole;
|
||||
}
|
||||
}
|
||||
else if (diff < 0.5) {
|
||||
}
|
||||
else if ((frac == 0U) || (frac & 1U)) {
|
||||
// if halfway, round up if odd OR if last digit is 0
|
||||
++frac;
|
||||
}
|
||||
|
||||
if (prec == 0U) {
|
||||
diff = value - (double)whole;
|
||||
if ((!(diff < 0.5) || (diff > 0.5)) && (whole & 1)) {
|
||||
// exactly 0.5 and ODD, then round up
|
||||
// 1.5 -> 2, but 2.5 -> 2
|
||||
++whole;
|
||||
}
|
||||
}
|
||||
else {
|
||||
unsigned int count = prec;
|
||||
// now do fractional part, as an unsigned number
|
||||
while (len < PRINTF_FTOA_BUFFER_SIZE) {
|
||||
--count;
|
||||
buf[len++] = (char)(48U + (frac % 10U));
|
||||
if (!(frac /= 10U)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
// add extra 0s
|
||||
while ((len < PRINTF_FTOA_BUFFER_SIZE) && (count-- > 0U)) {
|
||||
buf[len++] = '0';
|
||||
}
|
||||
if (len < PRINTF_FTOA_BUFFER_SIZE) {
|
||||
// add decimal
|
||||
buf[len++] = '.';
|
||||
}
|
||||
}
|
||||
|
||||
// do whole part, number is reversed
|
||||
while (len < PRINTF_FTOA_BUFFER_SIZE) {
|
||||
buf[len++] = (char)(48 + (whole % 10));
|
||||
if (!(whole /= 10)) {
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// pad leading zeros
|
||||
if (!(flags & FLAGS_LEFT) && (flags & FLAGS_ZEROPAD)) {
|
||||
if (width && (negative || (flags & (FLAGS_PLUS | FLAGS_SPACE)))) {
|
||||
width--;
|
||||
}
|
||||
while ((len < width) && (len < PRINTF_FTOA_BUFFER_SIZE)) {
|
||||
buf[len++] = '0';
|
||||
}
|
||||
}
|
||||
|
||||
if (len < PRINTF_FTOA_BUFFER_SIZE) {
|
||||
if (negative) {
|
||||
buf[len++] = '-';
|
||||
}
|
||||
else if (flags & FLAGS_PLUS) {
|
||||
buf[len++] = '+'; // ignore the space if the '+' exists
|
||||
}
|
||||
else if (flags & FLAGS_SPACE) {
|
||||
buf[len++] = ' ';
|
||||
}
|
||||
}
|
||||
|
||||
return _out_rev(out, buffer, idx, maxlen, buf, len, width, flags);
|
||||
}
|
||||
|
||||
|
||||
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
|
||||
// internal ftoa variant for exponential floating-point type, contributed by Martijn Jasperse <m.jasperse@gmail.com>
|
||||
static size_t _etoa(out_fct_type out, char* buffer, size_t idx, size_t maxlen, double value, unsigned int prec, unsigned int width, unsigned int flags)
|
||||
{
|
||||
// check for NaN and special values
|
||||
if ((value != value) || (value > DBL_MAX) || (value < -DBL_MAX)) {
|
||||
return _ftoa(out, buffer, idx, maxlen, value, prec, width, flags);
|
||||
}
|
||||
|
||||
// determine the sign
|
||||
const bool negative = value < 0;
|
||||
if (negative) {
|
||||
value = -value;
|
||||
}
|
||||
|
||||
// default precision
|
||||
if (!(flags & FLAGS_PRECISION)) {
|
||||
prec = PRINTF_DEFAULT_FLOAT_PRECISION;
|
||||
}
|
||||
|
||||
// determine the decimal exponent
|
||||
// based on the algorithm by David Gay (https://www.ampl.com/netlib/fp/dtoa.c)
|
||||
union {
|
||||
uint64_t U;
|
||||
double F;
|
||||
} conv;
|
||||
|
||||
conv.F = value;
|
||||
int exp2 = (int)((conv.U >> 52U) & 0x07FFU) - 1023; // effectively log2
|
||||
conv.U = (conv.U & ((1ULL << 52U) - 1U)) | (1023ULL << 52U); // drop the exponent so conv.F is now in [1,2)
|
||||
// now approximate log10 from the log2 integer part and an expansion of ln around 1.5
|
||||
int expval = (int)(0.1760912590558 + exp2 * 0.301029995663981 + (conv.F - 1.5) * 0.289529654602168);
|
||||
// now we want to compute 10^expval but we want to be sure it won't overflow
|
||||
exp2 = (int)(expval * 3.321928094887362 + 0.5);
|
||||
const double z = expval * 2.302585092994046 - exp2 * 0.6931471805599453;
|
||||
const double z2 = z * z;
|
||||
conv.U = (uint64_t)(exp2 + 1023) << 52U;
|
||||
// compute exp(z) using continued fractions, see https://en.wikipedia.org/wiki/Exponential_function#Continued_fractions_for_ex
|
||||
conv.F *= 1 + 2 * z / (2 - z + (z2 / (6 + (z2 / (10 + z2 / 14)))));
|
||||
// correct for rounding errors
|
||||
if (value < conv.F) {
|
||||
expval--;
|
||||
conv.F /= 10;
|
||||
}
|
||||
|
||||
// the exponent format is "%+03d" and largest value is "307", so set aside 4-5 characters
|
||||
unsigned int minwidth = ((expval < 100) && (expval > -100)) ? 4U : 5U;
|
||||
|
||||
// in "%g" mode, "prec" is the number of *significant figures* not decimals
|
||||
if (flags & FLAGS_ADAPT_EXP) {
|
||||
// do we want to fall-back to "%f" mode?
|
||||
if ((value >= 1e-4) && (value < 1e6)) {
|
||||
if ((int)prec > expval) {
|
||||
prec = (unsigned)((int)prec - expval - 1);
|
||||
}
|
||||
else {
|
||||
prec = 0;
|
||||
}
|
||||
flags |= FLAGS_PRECISION; // make sure _ftoa respects precision
|
||||
// no characters in exponent
|
||||
minwidth = 0U;
|
||||
expval = 0;
|
||||
}
|
||||
else {
|
||||
// we use one sigfig for the whole part
|
||||
if ((prec > 0) && (flags & FLAGS_PRECISION)) {
|
||||
--prec;
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
// will everything fit?
|
||||
unsigned int fwidth = width;
|
||||
if (width > minwidth) {
|
||||
// we didn't fall-back so subtract the characters required for the exponent
|
||||
fwidth -= minwidth;
|
||||
} else {
|
||||
// not enough characters, so go back to default sizing
|
||||
fwidth = 0U;
|
||||
}
|
||||
if ((flags & FLAGS_LEFT) && minwidth) {
|
||||
// if we're padding on the right, DON'T pad the floating part
|
||||
fwidth = 0U;
|
||||
}
|
||||
|
||||
// rescale the float value
|
||||
if (expval) {
|
||||
value /= conv.F;
|
||||
}
|
||||
|
||||
// output the floating part
|
||||
const size_t start_idx = idx;
|
||||
idx = _ftoa(out, buffer, idx, maxlen, negative ? -value : value, prec, fwidth, flags & ~FLAGS_ADAPT_EXP);
|
||||
|
||||
// output the exponent part
|
||||
if (minwidth) {
|
||||
// output the exponential symbol
|
||||
out((flags & FLAGS_UPPERCASE) ? 'E' : 'e', buffer, idx++, maxlen);
|
||||
// output the exponent value
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, (expval < 0) ? -expval : expval, expval < 0, 10, 0, minwidth-1, FLAGS_ZEROPAD | FLAGS_PLUS);
|
||||
// might need to right-pad spaces
|
||||
if (flags & FLAGS_LEFT) {
|
||||
while (idx - start_idx < width) out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
return idx;
|
||||
}
|
||||
#endif // PRINTF_SUPPORT_EXPONENTIAL
|
||||
#endif // PRINTF_SUPPORT_FLOAT
|
||||
|
||||
|
||||
// internal vsnprintf
|
||||
static int _vsnprintf(out_fct_type out, char* buffer, const size_t maxlen, const char* format, va_list va)
|
||||
{
|
||||
unsigned int flags, width, precision, n;
|
||||
size_t idx = 0U;
|
||||
|
||||
if (!buffer) {
|
||||
// use null output function
|
||||
out = _out_null;
|
||||
}
|
||||
|
||||
while (*format)
|
||||
{
|
||||
// format specifier? %[flags][width][.precision][length]
|
||||
if (*format != '%') {
|
||||
// no
|
||||
out(*format, buffer, idx++, maxlen);
|
||||
format++;
|
||||
continue;
|
||||
}
|
||||
else {
|
||||
// yes, evaluate it
|
||||
format++;
|
||||
}
|
||||
|
||||
// evaluate flags
|
||||
flags = 0U;
|
||||
do {
|
||||
switch (*format) {
|
||||
case '0': flags |= FLAGS_ZEROPAD; format++; n = 1U; break;
|
||||
case '-': flags |= FLAGS_LEFT; format++; n = 1U; break;
|
||||
case '+': flags |= FLAGS_PLUS; format++; n = 1U; break;
|
||||
case ' ': flags |= FLAGS_SPACE; format++; n = 1U; break;
|
||||
case '#': flags |= FLAGS_HASH; format++; n = 1U; break;
|
||||
default : n = 0U; break;
|
||||
}
|
||||
} while (n);
|
||||
|
||||
// evaluate width field
|
||||
width = 0U;
|
||||
if (_is_digit(*format)) {
|
||||
width = _atoi(&format);
|
||||
}
|
||||
else if (*format == '*') {
|
||||
const int w = va_arg(va, int);
|
||||
if (w < 0) {
|
||||
flags |= FLAGS_LEFT; // reverse padding
|
||||
width = (unsigned int)-w;
|
||||
}
|
||||
else {
|
||||
width = (unsigned int)w;
|
||||
}
|
||||
format++;
|
||||
}
|
||||
|
||||
// evaluate precision field
|
||||
precision = 0U;
|
||||
if (*format == '.') {
|
||||
flags |= FLAGS_PRECISION;
|
||||
format++;
|
||||
if (_is_digit(*format)) {
|
||||
precision = _atoi(&format);
|
||||
}
|
||||
else if (*format == '*') {
|
||||
const int prec = (int)va_arg(va, int);
|
||||
precision = prec > 0 ? (unsigned int)prec : 0U;
|
||||
format++;
|
||||
}
|
||||
}
|
||||
|
||||
// evaluate length field
|
||||
switch (*format) {
|
||||
case 'l' :
|
||||
flags |= FLAGS_LONG;
|
||||
format++;
|
||||
if (*format == 'l') {
|
||||
flags |= FLAGS_LONG_LONG;
|
||||
format++;
|
||||
}
|
||||
break;
|
||||
case 'h' :
|
||||
flags |= FLAGS_SHORT;
|
||||
format++;
|
||||
if (*format == 'h') {
|
||||
flags |= FLAGS_CHAR;
|
||||
format++;
|
||||
}
|
||||
break;
|
||||
#if defined(PRINTF_SUPPORT_PTRDIFF_T)
|
||||
case 't' :
|
||||
flags |= (sizeof(ptrdiff_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||
format++;
|
||||
break;
|
||||
#endif
|
||||
case 'j' :
|
||||
flags |= (sizeof(intmax_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||
format++;
|
||||
break;
|
||||
case 'z' :
|
||||
flags |= (sizeof(size_t) == sizeof(long) ? FLAGS_LONG : FLAGS_LONG_LONG);
|
||||
format++;
|
||||
break;
|
||||
default :
|
||||
break;
|
||||
}
|
||||
|
||||
// evaluate specifier
|
||||
switch (*format) {
|
||||
case 'd' :
|
||||
case 'i' :
|
||||
case 'u' :
|
||||
case 'x' :
|
||||
case 'X' :
|
||||
case 'o' :
|
||||
case 'b' : {
|
||||
// set the base
|
||||
unsigned int base;
|
||||
if (*format == 'x' || *format == 'X') {
|
||||
base = 16U;
|
||||
}
|
||||
else if (*format == 'o') {
|
||||
base = 8U;
|
||||
}
|
||||
else if (*format == 'b') {
|
||||
base = 2U;
|
||||
}
|
||||
else {
|
||||
base = 10U;
|
||||
flags &= ~FLAGS_HASH; // no hash for dec format
|
||||
}
|
||||
// uppercase
|
||||
if (*format == 'X') {
|
||||
flags |= FLAGS_UPPERCASE;
|
||||
}
|
||||
|
||||
// no plus or space flag for u, x, X, o, b
|
||||
if ((*format != 'i') && (*format != 'd')) {
|
||||
flags &= ~(FLAGS_PLUS | FLAGS_SPACE);
|
||||
}
|
||||
|
||||
// ignore '0' flag when precision is given
|
||||
if (flags & FLAGS_PRECISION) {
|
||||
flags &= ~FLAGS_ZEROPAD;
|
||||
}
|
||||
|
||||
// convert the integer
|
||||
if ((*format == 'i') || (*format == 'd')) {
|
||||
// signed
|
||||
if (flags & FLAGS_LONG_LONG) {
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
const long long value = va_arg(va, long long);
|
||||
idx = _ntoa_long_long(out, buffer, idx, maxlen, (unsigned long long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||
#endif
|
||||
}
|
||||
else if (flags & FLAGS_LONG) {
|
||||
const long value = va_arg(va, long);
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||
}
|
||||
else {
|
||||
const int value = (flags & FLAGS_CHAR) ? (char)va_arg(va, int) : (flags & FLAGS_SHORT) ? (short int)va_arg(va, int) : va_arg(va, int);
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned int)(value > 0 ? value : 0 - value), value < 0, base, precision, width, flags);
|
||||
}
|
||||
}
|
||||
else {
|
||||
// unsigned
|
||||
if (flags & FLAGS_LONG_LONG) {
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
idx = _ntoa_long_long(out, buffer, idx, maxlen, va_arg(va, unsigned long long), false, base, precision, width, flags);
|
||||
#endif
|
||||
}
|
||||
else if (flags & FLAGS_LONG) {
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, va_arg(va, unsigned long), false, base, precision, width, flags);
|
||||
}
|
||||
else {
|
||||
const unsigned int value = (flags & FLAGS_CHAR) ? (unsigned char)va_arg(va, unsigned int) : (flags & FLAGS_SHORT) ? (unsigned short int)va_arg(va, unsigned int) : va_arg(va, unsigned int);
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, value, false, base, precision, width, flags);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
#if defined(PRINTF_SUPPORT_FLOAT)
|
||||
case 'f' :
|
||||
case 'F' :
|
||||
if (*format == 'F') flags |= FLAGS_UPPERCASE;
|
||||
idx = _ftoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags);
|
||||
format++;
|
||||
break;
|
||||
#if defined(PRINTF_SUPPORT_EXPONENTIAL)
|
||||
case 'e':
|
||||
case 'E':
|
||||
case 'g':
|
||||
case 'G':
|
||||
if ((*format == 'g')||(*format == 'G')) flags |= FLAGS_ADAPT_EXP;
|
||||
if ((*format == 'E')||(*format == 'G')) flags |= FLAGS_UPPERCASE;
|
||||
idx = _etoa(out, buffer, idx, maxlen, va_arg(va, double), precision, width, flags);
|
||||
format++;
|
||||
break;
|
||||
#endif // PRINTF_SUPPORT_EXPONENTIAL
|
||||
#endif // PRINTF_SUPPORT_FLOAT
|
||||
case 'c' : {
|
||||
unsigned int l = 1U;
|
||||
// pre padding
|
||||
if (!(flags & FLAGS_LEFT)) {
|
||||
while (l++ < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
// char output
|
||||
out((char)va_arg(va, int), buffer, idx++, maxlen);
|
||||
// post padding
|
||||
if (flags & FLAGS_LEFT) {
|
||||
while (l++ < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case 's' : {
|
||||
const char* p = va_arg(va, char*);
|
||||
unsigned int l = _strnlen_s(p, precision ? precision : (size_t)-1);
|
||||
// pre padding
|
||||
if (flags & FLAGS_PRECISION) {
|
||||
l = (l < precision ? l : precision);
|
||||
}
|
||||
if (!(flags & FLAGS_LEFT)) {
|
||||
while (l++ < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
// string output
|
||||
while ((*p != 0) && (!(flags & FLAGS_PRECISION) || precision--)) {
|
||||
out(*(p++), buffer, idx++, maxlen);
|
||||
}
|
||||
// post padding
|
||||
if (flags & FLAGS_LEFT) {
|
||||
while (l++ < width) {
|
||||
out(' ', buffer, idx++, maxlen);
|
||||
}
|
||||
}
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case 'p' : {
|
||||
width = sizeof(void*) * 2U;
|
||||
flags |= FLAGS_ZEROPAD | FLAGS_UPPERCASE;
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
const bool is_ll = sizeof(uintptr_t) == sizeof(long long);
|
||||
if (is_ll) {
|
||||
idx = _ntoa_long_long(out, buffer, idx, maxlen, (uintptr_t)va_arg(va, void*), false, 16U, precision, width, flags);
|
||||
}
|
||||
else {
|
||||
#endif
|
||||
idx = _ntoa_long(out, buffer, idx, maxlen, (unsigned long)((uintptr_t)va_arg(va, void*)), false, 16U, precision, width, flags);
|
||||
#if defined(PRINTF_SUPPORT_LONG_LONG)
|
||||
}
|
||||
#endif
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
|
||||
case '%' :
|
||||
out('%', buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
|
||||
default :
|
||||
out(*format, buffer, idx++, maxlen);
|
||||
format++;
|
||||
break;
|
||||
}
|
||||
}
|
||||
|
||||
// termination
|
||||
out((char)0, buffer, idx < maxlen ? idx : maxlen - 1U, maxlen);
|
||||
|
||||
// return written chars without terminating \0
|
||||
return (int)idx;
|
||||
}
|
||||
|
||||
|
||||
///////////////////////////////////////////////////////////////////////////////
|
||||
|
||||
int printf_(const char* format, ...)
|
||||
{
|
||||
va_list va;
|
||||
va_start(va, format);
|
||||
char buffer[1];
|
||||
const int ret = _vsnprintf(_out_char, buffer, (size_t)-1, format, va);
|
||||
va_end(va);
|
||||
_putchar('\n');
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int sprintf_(char* buffer, const char* format, ...)
|
||||
{
|
||||
va_list va;
|
||||
va_start(va, format);
|
||||
const int ret = _vsnprintf(_out_buffer, buffer, (size_t)-1, format, va);
|
||||
va_end(va);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int snprintf_(char* buffer, size_t count, const char* format, ...)
|
||||
{
|
||||
va_list va;
|
||||
va_start(va, format);
|
||||
const int ret = _vsnprintf(_out_buffer, buffer, count, format, va);
|
||||
va_end(va);
|
||||
return ret;
|
||||
}
|
||||
|
||||
|
||||
int vprintf_(const char* format, va_list va)
|
||||
{
|
||||
char buffer[1];
|
||||
return _vsnprintf(_out_char, buffer, (size_t)-1, format, va);
|
||||
}
|
||||
|
||||
|
||||
int vsnprintf_(char* buffer, size_t count, const char* format, va_list va)
|
||||
{
|
||||
return _vsnprintf(_out_buffer, buffer, count, format, va);
|
||||
}
|
||||
|
||||
|
||||
int fctprintf(void (*out)(char character, void* arg), void* arg, const char* format, ...)
|
||||
{
|
||||
va_list va;
|
||||
va_start(va, format);
|
||||
const out_fct_wrap_type out_fct_wrap = { out, arg };
|
||||
const int ret = _vsnprintf(_out_fct, (char*)(uintptr_t)&out_fct_wrap, (size_t)-1, format, va);
|
||||
va_end(va);
|
||||
return ret;
|
||||
}
|
||||
|
|
@ -0,0 +1,27 @@
|
|||
[package]
|
||||
authors = ["The Rust Project Developers"]
|
||||
name = "unwind"
|
||||
version = "0.0.0"
|
||||
build = "build.rs"
|
||||
edition = "2018"
|
||||
include = [
|
||||
'/libunwind/*',
|
||||
]
|
||||
|
||||
[lib]
|
||||
name = "unwind"
|
||||
path = "lib.rs"
|
||||
test = false
|
||||
bench = false
|
||||
doc = false
|
||||
|
||||
[dependencies]
|
||||
compiler_builtins = "0.1.0"
|
||||
cfg-if = "0.1.8"
|
||||
libc = { path = "../libc" }
|
||||
|
||||
[build-dependencies]
|
||||
cc = { version = "1.0.1" }
|
||||
|
||||
[features]
|
||||
llvm-libunwind = []
|
||||
|
|
@ -0,0 +1,41 @@
|
|||
use libc::{c_void, c_int};
|
||||
use crate::libunwind as uw;
|
||||
|
||||
const UW_REG_SP: c_int = 13;
|
||||
|
||||
pub fn backtrace<F>(f: F) -> Result<(), uw::_Unwind_Reason_Code>
|
||||
where F: FnMut(usize) -> ()
|
||||
{
|
||||
struct TraceContext<F> {
|
||||
step_fn: F,
|
||||
prev_sp: uw::_Unwind_Word
|
||||
}
|
||||
|
||||
extern fn trace<F>(context: *mut uw::_Unwind_Context, arg: *mut c_void)
|
||||
-> uw::_Unwind_Reason_Code
|
||||
where F: FnMut(usize) -> ()
|
||||
{
|
||||
unsafe {
|
||||
let trace_context = &mut *(arg as *mut TraceContext<F>);
|
||||
|
||||
// Detect the root of a libfringe thread
|
||||
let cur_sp = uw::_Unwind_GetGR(context, UW_REG_SP);
|
||||
if cur_sp == trace_context.prev_sp {
|
||||
return uw::_URC_END_OF_STACK
|
||||
} else {
|
||||
trace_context.prev_sp = cur_sp;
|
||||
}
|
||||
|
||||
(trace_context.step_fn)(uw::_Unwind_GetIP(context));
|
||||
uw::_URC_NO_REASON
|
||||
}
|
||||
}
|
||||
|
||||
unsafe {
|
||||
let mut trace_context = TraceContext { step_fn: f, prev_sp: 0 };
|
||||
match uw::_Unwind_Backtrace(trace::<F>, &mut trace_context as *mut _ as *mut c_void) {
|
||||
uw::_URC_NO_REASON => Ok(()),
|
||||
err => Err(err)
|
||||
}
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,64 @@
|
|||
fn main() {
|
||||
println!("cargo:rerun-if-changed=build.rs");
|
||||
llvm_libunwind::compile();
|
||||
}
|
||||
|
||||
mod llvm_libunwind {
|
||||
use std::path::Path;
|
||||
|
||||
/// Compile the libunwind C/C++ source code.
|
||||
pub fn compile() {
|
||||
let cfg = &mut cc::Build::new();
|
||||
cfg.cpp(true);
|
||||
cfg.cpp_set_stdlib(None);
|
||||
cfg.warnings(false);
|
||||
|
||||
// libunwind expects a __LITTLE_ENDIAN__ macro to be set for LE archs, cf. #65765
|
||||
cfg.define("__LITTLE_ENDIAN__", Some("1"));
|
||||
// still have problem compiling the libunwind
|
||||
cfg.flag("-nostdlib");
|
||||
cfg.flag("-ffreestanding");
|
||||
cfg.flag("-fno-PIC");
|
||||
cfg.flag("-Isrc");
|
||||
cfg.flag("-isystem../include");
|
||||
cfg.flag("-fno-stack-protector");
|
||||
cfg.flag("--target=armv7-none-eabihf");
|
||||
cfg.define("_LIBUNWIND_IS_BAREMETAL", Some("1"));
|
||||
cfg.define("_LIBUNWIND_NO_HEAP", Some("1"));
|
||||
cfg.define("_LIBUNWIND_HAS_NO_THREADS", Some("1"));
|
||||
cfg.define("NDEBUG", Some("1"));
|
||||
|
||||
cfg.flag("-std=c99");
|
||||
cfg.flag("-std=c++11");
|
||||
cfg.flag("-nostdinc++");
|
||||
cfg.flag("-fno-exceptions");
|
||||
cfg.flag("-fno-rtti");
|
||||
cfg.flag("-fstrict-aliasing");
|
||||
cfg.flag("-funwind-tables");
|
||||
cfg.flag("-fvisibility=hidden");
|
||||
cfg.flag_if_supported("-fvisibility-global-new-delete-hidden");
|
||||
cfg.define("_LIBUNWIND_DISABLE_VISIBILITY_ANNOTATIONS", None);
|
||||
cfg.flag("-U_FORTIFY_SOURCE");
|
||||
cfg.define("_FORTIFY_SOURCE", Some("0"));
|
||||
|
||||
let unwind_sources = vec![
|
||||
"Unwind-EHABI.cpp",
|
||||
"Unwind-seh.cpp",
|
||||
"Unwind-sjlj.c",
|
||||
"UnwindLevel1-gcc-ext.c",
|
||||
"UnwindLevel1.c",
|
||||
"UnwindRegistersRestore.S",
|
||||
"UnwindRegistersSave.S",
|
||||
"libunwind.cpp"
|
||||
];
|
||||
|
||||
let root = Path::new("../llvm_libunwind");
|
||||
cfg.include(root.join("include"));
|
||||
for src in unwind_sources {
|
||||
println!("cargo:rerun-if-changed={}", src);
|
||||
cfg.file(root.join("src").join(src));
|
||||
}
|
||||
|
||||
cfg.compile("unwind");
|
||||
}
|
||||
}
|
||||
|
|
@ -0,0 +1,33 @@
|
|||
#![no_std]
|
||||
#![feature(link_cfg)]
|
||||
#![feature(nll)]
|
||||
#![feature(unwind_attributes)]
|
||||
#![feature(static_nobundle)]
|
||||
#![cfg_attr(not(target_env = "msvc"), feature(libc))]
|
||||
|
||||
cfg_if::cfg_if! {
|
||||
if #[cfg(target_env = "msvc")] {
|
||||
// no extra unwinder support needed
|
||||
} else if #[cfg(all(target_arch = "wasm32", not(target_os = "emscripten")))] {
|
||||
// no unwinder on the system!
|
||||
} else {
|
||||
mod libunwind;
|
||||
pub use libunwind::*;
|
||||
mod backtrace;
|
||||
pub use backtrace::backtrace;
|
||||
}
|
||||
}
|
||||
|
||||
#[cfg(target_env = "musl")]
|
||||
#[link(name = "unwind", kind = "static", cfg(target_feature = "crt-static"))]
|
||||
#[link(name = "gcc_s", cfg(not(target_feature = "crt-static")))]
|
||||
extern "C" {}
|
||||
|
||||
#[cfg(target_os = "redox")]
|
||||
#[link(name = "gcc_eh", kind = "static-nobundle", cfg(target_feature = "crt-static"))]
|
||||
#[link(name = "gcc_s", cfg(not(target_feature = "crt-static")))]
|
||||
extern "C" {}
|
||||
|
||||
#[cfg(all(target_vendor = "fortanix", target_env = "sgx"))]
|
||||
#[link(name = "unwind", kind = "static-nobundle")]
|
||||
extern "C" {}
|
||||
|
|
@ -0,0 +1,285 @@
|
|||
#![allow(nonstandard_style)]
|
||||
|
||||
use libc::{c_int, c_void, uintptr_t};
|
||||
|
||||
#[repr(C)]
|
||||
#[derive(Debug, Copy, Clone, PartialEq)]
|
||||
pub enum _Unwind_Reason_Code {
|
||||
_URC_NO_REASON = 0,
|
||||
_URC_FOREIGN_EXCEPTION_CAUGHT = 1,
|
||||
_URC_FATAL_PHASE2_ERROR = 2,
|
||||
_URC_FATAL_PHASE1_ERROR = 3,
|
||||
_URC_NORMAL_STOP = 4,
|
||||
_URC_END_OF_STACK = 5,
|
||||
_URC_HANDLER_FOUND = 6,
|
||||
_URC_INSTALL_CONTEXT = 7,
|
||||
_URC_CONTINUE_UNWIND = 8,
|
||||
_URC_FAILURE = 9, // used only by ARM EHABI
|
||||
}
|
||||
pub use _Unwind_Reason_Code::*;
|
||||
|
||||
pub type _Unwind_Exception_Class = u64;
|
||||
pub type _Unwind_Word = uintptr_t;
|
||||
pub type _Unwind_Ptr = uintptr_t;
|
||||
pub type _Unwind_Trace_Fn =
|
||||
extern "C" fn(ctx: *mut _Unwind_Context, arg: *mut c_void) -> _Unwind_Reason_Code;
|
||||
|
||||
#[cfg(target_arch = "x86")]
|
||||
pub const unwinder_private_data_size: usize = 5;
|
||||
|
||||
#[cfg(target_arch = "x86_64")]
|
||||
pub const unwinder_private_data_size: usize = 6;
|
||||
|
||||
#[cfg(all(target_arch = "arm", not(target_os = "ios")))]
|
||||
pub const unwinder_private_data_size: usize = 20;
|
||||
|
||||
#[cfg(all(target_arch = "arm", target_os = "ios"))]
|
||||
pub const unwinder_private_data_size: usize = 5;
|
||||
|
||||
#[cfg(target_arch = "aarch64")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_arch = "mips")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_arch = "mips64")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(any(target_arch = "powerpc", target_arch = "powerpc64"))]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_arch = "s390x")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_arch = "sparc64")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_arch = "riscv64")]
|
||||
pub const unwinder_private_data_size: usize = 2;
|
||||
|
||||
#[cfg(target_os = "emscripten")]
|
||||
pub const unwinder_private_data_size: usize = 20;
|
||||
|
||||
#[cfg(all(target_arch = "hexagon", target_os = "linux"))]
|
||||
pub const unwinder_private_data_size: usize = 35;
|
||||
|
||||
#[repr(C)]
|
||||
pub struct _Unwind_Exception {
|
||||
pub exception_class: _Unwind_Exception_Class,
|
||||
pub exception_cleanup: _Unwind_Exception_Cleanup_Fn,
|
||||
pub private: [_Unwind_Word; unwinder_private_data_size],
|
||||
}
|
||||
|
||||
pub enum _Unwind_Context {}
|
||||
|
||||
pub type _Unwind_Exception_Cleanup_Fn =
|
||||
extern "C" fn(unwind_code: _Unwind_Reason_Code, exception: *mut _Unwind_Exception);
|
||||
#[cfg_attr(
|
||||
all(feature = "llvm-libunwind", any(target_os = "fuchsia", target_os = "linux")),
|
||||
link(name = "unwind", kind = "static")
|
||||
)]
|
||||
extern "C" {
|
||||
#[unwind(allowed)]
|
||||
pub fn _Unwind_Resume(exception: *mut _Unwind_Exception) -> !;
|
||||
pub fn _Unwind_DeleteException(exception: *mut _Unwind_Exception);
|
||||
pub fn _Unwind_GetLanguageSpecificData(ctx: *mut _Unwind_Context) -> *mut c_void;
|
||||
pub fn _Unwind_GetRegionStart(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
|
||||
pub fn _Unwind_GetTextRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
|
||||
pub fn _Unwind_GetDataRelBase(ctx: *mut _Unwind_Context) -> _Unwind_Ptr;
|
||||
}
|
||||
|
||||
cfg_if::cfg_if! {
|
||||
if #[cfg(all(any(target_os = "ios", target_os = "netbsd", not(target_arch = "arm"))))] {
|
||||
// Not ARM EHABI
|
||||
#[repr(C)]
|
||||
#[derive(Copy, Clone, PartialEq)]
|
||||
pub enum _Unwind_Action {
|
||||
_UA_SEARCH_PHASE = 1,
|
||||
_UA_CLEANUP_PHASE = 2,
|
||||
_UA_HANDLER_FRAME = 4,
|
||||
_UA_FORCE_UNWIND = 8,
|
||||
_UA_END_OF_STACK = 16,
|
||||
}
|
||||
pub use _Unwind_Action::*;
|
||||
|
||||
#[cfg_attr(all(feature = "llvm-libunwind",
|
||||
any(target_os = "fuchsia", target_os = "linux")),
|
||||
link(name = "unwind", kind = "static"))]
|
||||
extern "C" {
|
||||
pub fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word;
|
||||
pub fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word);
|
||||
pub fn _Unwind_GetIP(ctx: *mut _Unwind_Context) -> _Unwind_Word;
|
||||
pub fn _Unwind_SetIP(ctx: *mut _Unwind_Context, value: _Unwind_Word);
|
||||
pub fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context, ip_before_insn: *mut c_int)
|
||||
-> _Unwind_Word;
|
||||
pub fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void;
|
||||
}
|
||||
|
||||
} else {
|
||||
// ARM EHABI
|
||||
#[repr(C)]
|
||||
#[derive(Copy, Clone, PartialEq)]
|
||||
pub enum _Unwind_State {
|
||||
_US_VIRTUAL_UNWIND_FRAME = 0,
|
||||
_US_UNWIND_FRAME_STARTING = 1,
|
||||
_US_UNWIND_FRAME_RESUME = 2,
|
||||
_US_ACTION_MASK = 3,
|
||||
_US_FORCE_UNWIND = 8,
|
||||
_US_END_OF_STACK = 16,
|
||||
}
|
||||
pub use _Unwind_State::*;
|
||||
|
||||
#[repr(C)]
|
||||
enum _Unwind_VRS_Result {
|
||||
_UVRSR_OK = 0,
|
||||
_UVRSR_NOT_IMPLEMENTED = 1,
|
||||
_UVRSR_FAILED = 2,
|
||||
}
|
||||
#[repr(C)]
|
||||
enum _Unwind_VRS_RegClass {
|
||||
_UVRSC_CORE = 0,
|
||||
_UVRSC_VFP = 1,
|
||||
_UVRSC_FPA = 2,
|
||||
_UVRSC_WMMXD = 3,
|
||||
_UVRSC_WMMXC = 4,
|
||||
}
|
||||
use _Unwind_VRS_RegClass::*;
|
||||
#[repr(C)]
|
||||
enum _Unwind_VRS_DataRepresentation {
|
||||
_UVRSD_UINT32 = 0,
|
||||
_UVRSD_VFPX = 1,
|
||||
_UVRSD_FPAX = 2,
|
||||
_UVRSD_UINT64 = 3,
|
||||
_UVRSD_FLOAT = 4,
|
||||
_UVRSD_DOUBLE = 5,
|
||||
}
|
||||
use _Unwind_VRS_DataRepresentation::*;
|
||||
|
||||
pub const UNWIND_POINTER_REG: c_int = 12;
|
||||
pub const UNWIND_SP_REG: c_int = 13;
|
||||
pub const UNWIND_IP_REG: c_int = 15;
|
||||
|
||||
#[cfg_attr(all(feature = "llvm-libunwind",
|
||||
any(target_os = "fuchsia", target_os = "linux")),
|
||||
link(name = "unwind", kind = "static"))]
|
||||
extern "C" {
|
||||
fn _Unwind_VRS_Get(ctx: *mut _Unwind_Context,
|
||||
regclass: _Unwind_VRS_RegClass,
|
||||
regno: _Unwind_Word,
|
||||
repr: _Unwind_VRS_DataRepresentation,
|
||||
data: *mut c_void)
|
||||
-> _Unwind_VRS_Result;
|
||||
|
||||
fn _Unwind_VRS_Set(ctx: *mut _Unwind_Context,
|
||||
regclass: _Unwind_VRS_RegClass,
|
||||
regno: _Unwind_Word,
|
||||
repr: _Unwind_VRS_DataRepresentation,
|
||||
data: *mut c_void)
|
||||
-> _Unwind_VRS_Result;
|
||||
}
|
||||
|
||||
// On Android or ARM/Linux, these are implemented as macros:
|
||||
|
||||
pub unsafe fn _Unwind_GetGR(ctx: *mut _Unwind_Context, reg_index: c_int) -> _Unwind_Word {
|
||||
let mut val: _Unwind_Word = 0;
|
||||
_Unwind_VRS_Get(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
|
||||
&mut val as *mut _ as *mut c_void);
|
||||
val
|
||||
}
|
||||
|
||||
pub unsafe fn _Unwind_SetGR(ctx: *mut _Unwind_Context, reg_index: c_int, value: _Unwind_Word) {
|
||||
let mut value = value;
|
||||
_Unwind_VRS_Set(ctx, _UVRSC_CORE, reg_index as _Unwind_Word, _UVRSD_UINT32,
|
||||
&mut value as *mut _ as *mut c_void);
|
||||
}
|
||||
|
||||
pub unsafe fn _Unwind_GetIP(ctx: *mut _Unwind_Context)
|
||||
-> _Unwind_Word {
|
||||
let val = _Unwind_GetGR(ctx, UNWIND_IP_REG);
|
||||
(val & !1) as _Unwind_Word
|
||||
}
|
||||
|
||||
pub unsafe fn _Unwind_SetIP(ctx: *mut _Unwind_Context,
|
||||
value: _Unwind_Word) {
|
||||
// Propagate thumb bit to instruction pointer
|
||||
let thumb_state = _Unwind_GetGR(ctx, UNWIND_IP_REG) & 1;
|
||||
let value = value | thumb_state;
|
||||
_Unwind_SetGR(ctx, UNWIND_IP_REG, value);
|
||||
}
|
||||
|
||||
pub unsafe fn _Unwind_GetIPInfo(ctx: *mut _Unwind_Context,
|
||||
ip_before_insn: *mut c_int)
|
||||
-> _Unwind_Word {
|
||||
*ip_before_insn = 0;
|
||||
_Unwind_GetIP(ctx)
|
||||
}
|
||||
|
||||
// This function also doesn't exist on Android or ARM/Linux, so make it a no-op
|
||||
pub unsafe fn _Unwind_FindEnclosingFunction(pc: *mut c_void) -> *mut c_void {
|
||||
pc
|
||||
}
|
||||
}
|
||||
} // cfg_if!
|
||||
|
||||
cfg_if::cfg_if! {
|
||||
if #[cfg(not(all(target_os = "ios", target_arch = "arm")))] {
|
||||
// Not 32-bit iOS
|
||||
#[cfg_attr(all(feature = "llvm-libunwind",
|
||||
any(target_os = "fuchsia", target_os = "linux")),
|
||||
link(name = "unwind", kind = "static"))]
|
||||
extern "C" {
|
||||
#[unwind(allowed)]
|
||||
pub fn _Unwind_RaiseException(exception: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
|
||||
pub fn _Unwind_Backtrace(trace: _Unwind_Trace_Fn,
|
||||
trace_argument: *mut c_void)
|
||||
-> _Unwind_Reason_Code;
|
||||
}
|
||||
} else {
|
||||
// 32-bit iOS uses SjLj and does not provide _Unwind_Backtrace()
|
||||
#[cfg_attr(all(feature = "llvm-libunwind",
|
||||
any(target_os = "fuchsia", target_os = "linux")),
|
||||
link(name = "unwind", kind = "static"))]
|
||||
extern "C" {
|
||||
#[unwind(allowed)]
|
||||
pub fn _Unwind_SjLj_RaiseException(e: *mut _Unwind_Exception) -> _Unwind_Reason_Code;
|
||||
}
|
||||
|
||||
#[inline]
|
||||
pub unsafe fn _Unwind_RaiseException(exc: *mut _Unwind_Exception) -> _Unwind_Reason_Code {
|
||||
_Unwind_SjLj_RaiseException(exc)
|
||||
}
|
||||
}
|
||||
} // cfg_if!
|
||||
|
||||
cfg_if::cfg_if! {
|
||||
if #[cfg(all(windows, target_arch = "x86_64", target_env = "gnu"))] {
|
||||
// We declare these as opaque types. This is fine since you just need to
|
||||
// pass them to _GCC_specific_handler and forget about them.
|
||||
pub enum EXCEPTION_RECORD {}
|
||||
pub type LPVOID = *mut c_void;
|
||||
pub enum CONTEXT {}
|
||||
pub enum DISPATCHER_CONTEXT {}
|
||||
pub type EXCEPTION_DISPOSITION = c_int;
|
||||
type PersonalityFn = unsafe extern "C" fn(version: c_int,
|
||||
actions: _Unwind_Action,
|
||||
exception_class: _Unwind_Exception_Class,
|
||||
exception_object: *mut _Unwind_Exception,
|
||||
context: *mut _Unwind_Context)
|
||||
-> _Unwind_Reason_Code;
|
||||
|
||||
extern "C" {
|
||||
pub fn _GCC_specific_handler(exceptionRecord: *mut EXCEPTION_RECORD,
|
||||
establisherFrame: LPVOID,
|
||||
contextRecord: *mut CONTEXT,
|
||||
dispatcherContext: *mut DISPATCHER_CONTEXT,
|
||||
personality: PersonalityFn)
|
||||
-> EXCEPTION_DISPOSITION;
|
||||
}
|
||||
}
|
||||
} // cfg_if!
|
||||
|
||||
#[no_mangle]
|
||||
extern fn abort() {
|
||||
panic!("Abort!");
|
||||
}
|
||||
|
||||
|
|
@ -24,4 +24,6 @@ libsupport_zynq = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
|
|||
libcortex_a9 = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
|
||||
libasync = { git = "https://git.m-labs.hk/M-Labs/zc706.git" }
|
||||
dyld = { path = "../libdyld" }
|
||||
unwind = { path = "../libunwind" }
|
||||
libc = { path = "../libc" }
|
||||
fatfs = { version = "0.3", features = ["core_io"], default-features = false }
|
||||
|
|
|
|||
Loading…
Reference in New Issue