OpenE2K
/
rust
2
0
Fork 0
Code Issues Pull Requests Projects Releases Wiki Activity

auto merge of #14963 : w3ln4/rust/master, r=alexcrichton 

The aim of these changes is not working out a generic bi-endianness architectures support but to allow people develop for little endian MIPS machines (issue #7190).
This commit is contained in:
bors 2014-06-24 13:46:54 +00:00
parent 71fe44def9 34a384a128
commit 82ec1aef29
21 changed files with 331 additions and 16 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

32
mk/platform.mk
View File

@ -374,6 +374,36 @@ CFG_RUN_TARG_arm-unknown-linux-gnueabi=$(call CFG_RUN_arm-unknown-linux-gnueabi,
RUSTC_FLAGS_arm-unknown-linux-gnueabi :=
RUSTC_CROSS_FLAGS_arm-unknown-linux-gnueabi :=
# mipsel-linux configuration
CC_mipsel-linux=mipsel-linux-gcc
CXX_mipsel-linux=mipsel-linux-g++
CPP_mipsel-linux=mipsel-linux-gcc
AR_mipsel-linux=mipsel-linux-ar
CFG_LIB_NAME_mipsel-linux=lib$(1).so
CFG_STATIC_LIB_NAME_mipsel-linux=lib$(1).a
CFG_LIB_GLOB_mipsel-linux=lib$(1)-*.so
CFG_LIB_DSYM_GLOB_mipsel-linux=lib$(1)-*.dylib.dSYM
CFG_CFLAGS_mipsel-linux := -mips32 -mabi=32 $(CFLAGS)
CFG_GCCISH_CFLAGS_mipsel-linux := -Wall -g -fPIC -mips32 -mabi=32 $(CFLAGS)
CFG_GCCISH_CXXFLAGS_mipsel-linux := -fno-rtti $(CXXFLAGS)
CFG_GCCISH_LINK_FLAGS_mipsel-linux := -shared -fPIC -g -mips32
CFG_GCCISH_DEF_FLAG_mipsel-linux := -Wl,--export-dynamic,--dynamic-list=
CFG_GCCISH_PRE_LIB_FLAGS_mipsel-linux := -Wl,-whole-archive
CFG_GCCISH_POST_LIB_FLAGS_mipsel-linux := -Wl,-no-whole-archive
CFG_DEF_SUFFIX_mipsel-linux := .linux.def
CFG_LLC_FLAGS_mipsel-linux :=
CFG_INSTALL_NAME_mipsel-linux =
CFG_LIBUV_LINK_FLAGS_mipsel-linux =
CFG_EXE_SUFFIX_mipsel-linux :=
CFG_WINDOWSY_mipsel-linux :=
CFG_UNIXY_mipsel-linux := 1
CFG_PATH_MUNGE_mipsel-linux := true
CFG_LDPATH_mipsel-linux :=
CFG_RUN_mipsel-linux=
CFG_RUN_TARG_mipsel-linux=
RUSTC_FLAGS_mipsel-linux := -C target-cpu=mips32 -C target-feature="+mips32,+o32"
# mips-unknown-linux-gnu configuration
CC_mips-unknown-linux-gnu=mips-linux-gnu-gcc
CXX_mips-unknown-linux-gnu=mips-linux-gnu-g++
@ -612,7 +642,7 @@ define CFG_MAKE_TOOLCHAIN
$$(CFG_GCCISH_DEF_FLAG_$(1))$$(3) $$(2) \
$$(call CFG_INSTALL_NAME_$(1),$$(4))
ifeq ($$(findstring $(HOST_$(1)),arm mips),)
ifeq ($$(findstring $(HOST_$(1)),arm mips mipsel),)
# We're using llvm-mc as our assembler because it supports
# .cfi pseudo-ops on mac

2
src/libcore/mem.rs
View File

@ -404,6 +404,7 @@ mod tests {
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
fn size_of_32() {
assert_eq!(size_of::<uint>(), 4u);
assert_eq!(size_of::<*uint>(), 4u);
@ -435,6 +436,7 @@ mod tests {
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
fn align_of_32() {
assert_eq!(align_of::<uint>(), 4u);
assert_eq!(align_of::<*uint>(), 4u);

3
src/libgreen/context.rs
View File

@ -268,12 +268,15 @@ fn initialize_call_frame(regs: &mut Registers, fptr: InitFn, arg: uint,
}
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
type Registers = [uint, ..32];
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
fn new_regs() -> Box<Registers> { box {[0, .. 32]} }
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
fn initialize_call_frame(regs: &mut Registers, fptr: InitFn, arg: uint,
procedure: raw::Procedure, sp: *mut uint) {
let sp = align_down(sp);

8
src/liblibc/lib.rs
View File

@ -463,6 +463,7 @@ pub mod types {
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod arch {
pub mod c95 {
pub type c_char = i8;
@ -491,6 +492,7 @@ pub mod types {
}
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod posix88 {
pub type off_t = i32;
pub type dev_t = u64;
@ -599,6 +601,7 @@ pub mod types {
}
}
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod posix01 {
use types::os::arch::c95::{c_long, c_ulong, time_t};
use types::os::arch::posix88::{gid_t, ino_t};
@ -2209,6 +2212,7 @@ pub mod consts {
}
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod posix88 {
use types::os::arch::c95::c_int;
use types::common::c95::c_void;
@ -2483,6 +2487,7 @@ pub mod consts {
pub static PTHREAD_STACK_MIN: size_t = 16384;
#[cfg(target_arch = "mips", target_os = "linux")]
#[cfg(target_arch = "mipsel", target_os = "linux")]
pub static PTHREAD_STACK_MIN: size_t = 131072;
pub static CLOCK_REALTIME: c_int = 0;
@ -2536,6 +2541,7 @@ pub mod consts {
pub static SHUT_RDWR: c_int = 2;
}
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod bsd44 {
use types::os::arch::c95::c_int;
@ -2604,6 +2610,7 @@ pub mod consts {
pub static MAP_STACK : c_int = 0x020000;
}
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub mod extra {
use types::os::arch::c95::c_int;
@ -2976,6 +2983,7 @@ pub mod consts {
pub static PTHREAD_STACK_MIN: size_t = 4096;
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
#[cfg(target_arch = "x86")]
#[cfg(target_arch = "x86_64")]
pub static PTHREAD_STACK_MIN: size_t = 2048;

15
src/libnative/io/c_unix.rs
View File

@ -23,20 +23,26 @@ use libc;
#[cfg(target_os = "ios")]
#[cfg(target_os = "freebsd")]
pub static FIONBIO: libc::c_ulong = 0x8004667e;
#[cfg(target_os = "linux", not(target_arch = "mips"))]
#[cfg(target_os = "linux", target_arch = "x86")]
#[cfg(target_os = "linux", target_arch = "x86_64")]
#[cfg(target_os = "linux", target_arch = "arm")]
#[cfg(target_os = "android")]
pub static FIONBIO: libc::c_ulong = 0x5421;
#[cfg(target_os = "linux", target_arch = "mips")]
#[cfg(target_os = "linux", target_arch = "mipsel")]
pub static FIONBIO: libc::c_ulong = 0x667e;
#[cfg(target_os = "macos")]
#[cfg(target_os = "ios")]
#[cfg(target_os = "freebsd")]
pub static FIOCLEX: libc::c_ulong = 0x20006601;
#[cfg(target_os = "linux", not(target_arch = "mips"))]
#[cfg(target_os = "linux", target_arch = "x86")]
#[cfg(target_os = "linux", target_arch = "x86_64")]
#[cfg(target_os = "linux", target_arch = "arm")]
#[cfg(target_os = "android")]
pub static FIOCLEX: libc::c_ulong = 0x5451;
#[cfg(target_os = "linux", target_arch = "mips")]
#[cfg(target_os = "linux", target_arch = "mipsel")]
pub static FIOCLEX: libc::c_ulong = 0x6601;
#[cfg(target_os = "macos")]
@ -109,7 +115,9 @@ mod select {
}
}
#[cfg(target_os = "linux", not(target_arch = "mips"))]
#[cfg(target_os = "linux", target_arch = "x86")]
#[cfg(target_os = "linux", target_arch = "x86_64")]
#[cfg(target_os = "linux", target_arch = "arm")]
#[cfg(target_os = "android")]
mod signal {
use libc;
@ -153,6 +161,7 @@ mod signal {
}
#[cfg(target_os = "linux", target_arch = "mips")]
#[cfg(target_os = "linux", target_arch = "mipsel")]
mod signal {
use libc;

72
src/librustc/back/mipsel.rs Normal file
View File

@ -0,0 +1,72 @@
// Copyright 2012 The Rust Project Developers. See the COPYRIGHT
// file at the top-level directory of this distribution and at
// http://rust-lang.org/COPYRIGHT.
//
// Licensed under the Apache License, Version 2.0 <LICENSE-APACHE or
// http://www.apache.org/licenses/LICENSE-2.0> or the MIT license
// <LICENSE-MIT or http://opensource.org/licenses/MIT>, at your
// option. This file may not be copied, modified, or distributed
// except according to those terms.
use back::target_strs;
use syntax::abi;
pub fn get_target_strs(target_triple: String, target_os: abi::Os) -> target_strs::t {
return target_strs::t {
module_asm: "".to_string(),
data_layout: match target_os {
abi::OsMacos => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
abi::OsiOS => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
abi::OsWin32 => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
abi::OsLinux => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
abi::OsAndroid => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
abi::OsFreebsd => {
"e-p:32:32:32\
-i1:8:8-i8:8:8-i16:16:16-i32:32:32-i64:64:64\
-f32:32:32-f64:64:64\
-v64:64:64-v128:64:128\
-a0:0:64-n32".to_string()
}
},
target_triple: target_triple,
cc_args: Vec::new(),
};
}

12
src/librustc/driver/config.rs
View File

@ -18,7 +18,7 @@ use driver::session::Session;
use back;
use back::link;
use back::target_strs;
use back::{arm, x86, x86_64, mips};
use back::{arm, x86, x86_64, mips, mipsel};
use middle::lint;
use syntax::abi;
@ -373,7 +373,8 @@ pub fn default_configuration(sess: &Session) -> ast::CrateConfig {
abi::X86 => ("little", "x86", "32"),
abi::X86_64 => ("little", "x86_64", "64"),
abi::Arm => ("little", "arm", "32"),
abi::Mips => ("big", "mips", "32")
abi::Mips => ("big", "mips", "32"),
abi::Mipsel => ("little", "mipsel", "32")
};
let fam = match sess.targ_cfg.os {
@ -452,6 +453,7 @@ static architecture_abis : &'static [(&'static str, abi::Architecture)] = &'stat
("xscale", abi::Arm),
("thumb", abi::Arm),
("mipsel", abi::Mipsel),
("mips", abi::Mips)];
pub fn build_target_config(sopts: &Options) -> Config {
@ -470,14 +472,16 @@ pub fn build_target_config(sopts: &Options) -> Config {
abi::X86 => (ast::TyI32, ast::TyU32),
abi::X86_64 => (ast::TyI64, ast::TyU64),
abi::Arm => (ast::TyI32, ast::TyU32),
abi::Mips => (ast::TyI32, ast::TyU32)
abi::Mips => (ast::TyI32, ast::TyU32),
abi::Mipsel => (ast::TyI32, ast::TyU32)
};
let target_triple = sopts.target_triple.clone();
let target_strs = match arch {
abi::X86 => x86::get_target_strs(target_triple, os),
abi::X86_64 => x86_64::get_target_strs(target_triple, os),
abi::Arm => arm::get_target_strs(target_triple, os),
abi::Mips => mips::get_target_strs(target_triple, os)
abi::Mips => mips::get_target_strs(target_triple, os),
abi::Mipsel => mipsel::get_target_strs(target_triple, os)
};
Config {
os: os,

1
src/librustc/lib.rs
View File

@ -99,6 +99,7 @@ pub mod back {
pub mod link;
pub mod lto;
pub mod mips;
pub mod mipsel;
pub mod rpath;
pub mod svh;
pub mod target_strs;

3
src/librustc/middle/trans/adt.rs
View File

@ -59,7 +59,7 @@ use middle::trans::type_::Type;
use middle::trans::type_of;
use middle::ty;
use middle::ty::Disr;
use syntax::abi::{X86, X86_64, Arm, Mips};
use syntax::abi::{X86, X86_64, Arm, Mips, Mipsel};
use syntax::ast;
use syntax::attr;
use syntax::attr::IntType;
@ -365,6 +365,7 @@ fn range_to_inttype(cx: &CrateContext, hint: Hint, bounds: &IntBounds) -> IntTyp
// corresponding to `choose_shortest`. However, we don't run on those yet...?
Arm => at_least_32,
Mips => at_least_32,
Mipsel => at_least_32,
}
}
attr::ReprAny => {

1
src/librustc/middle/trans/asm.rs
View File

@ -135,6 +135,7 @@ pub fn trans_inline_asm<'a>(bcx: &'a Block<'a>, ia: &ast::InlineAsm)
#[cfg(target_arch = "arm")]
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
fn get_clobbers() -> String {
"".to_string()
}

6
src/librustc/middle/trans/base.rs
View File

@ -83,7 +83,7 @@ use std::cell::{Cell, RefCell};
use std::rc::Rc;
use std::{i8, i16, i32, i64};
use std::gc::Gc;
use syntax::abi::{X86, X86_64, Arm, Mips, Rust, RustIntrinsic};
use syntax::abi::{X86, X86_64, Arm, Mips, Mipsel, Rust, RustIntrinsic};
use syntax::ast_util::{local_def, is_local};
use syntax::attr::AttrMetaMethods;
use syntax::attr;
@ -1006,7 +1006,7 @@ pub fn call_memcpy(cx: &Block, dst: ValueRef, src: ValueRef, n_bytes: ValueRef,
let _icx = push_ctxt("call_memcpy");
let ccx = cx.ccx();
let key = match ccx.sess().targ_cfg.arch {
X86 | Arm | Mips => "llvm.memcpy.p0i8.p0i8.i32",
X86 | Arm | Mips | Mipsel => "llvm.memcpy.p0i8.p0i8.i32",
X86_64 => "llvm.memcpy.p0i8.p0i8.i64"
};
let memcpy = ccx.get_intrinsic(&key);
@ -1050,7 +1050,7 @@ fn memzero(b: &Builder, llptr: ValueRef, ty: Type) {
let ccx = b.ccx;
let intrinsic_key = match ccx.sess().targ_cfg.arch {
X86 | Arm | Mips => "llvm.memset.p0i8.i32",
X86 | Arm | Mips | Mipsel => "llvm.memset.p0i8.i32",
X86_64 => "llvm.memset.p0i8.i64"
};

3
src/librustc/middle/trans/cabi.rs
View File

@ -16,7 +16,7 @@ use middle::trans::cabi_x86_64;
use middle::trans::cabi_arm;
use middle::trans::cabi_mips;
use middle::trans::type_::Type;
use syntax::abi::{X86, X86_64, Arm, Mips};
use syntax::abi::{X86, X86_64, Arm, Mips, Mipsel};
#[deriving(Clone, PartialEq)]
pub enum ArgKind {
@ -110,5 +110,6 @@ pub fn compute_abi_info(ccx: &CrateContext,
X86_64 => cabi_x86_64::compute_abi_info(ccx, atys, rty, ret_def),
Arm => cabi_arm::compute_abi_info(ccx, atys, rty, ret_def),
Mips => cabi_mips::compute_abi_info(ccx, atys, rty, ret_def),
Mipsel => cabi_mips::compute_abi_info(ccx, atys, rty, ret_def),
}
}

4
src/librustc/middle/trans/type_.rs
View File

@ -16,7 +16,7 @@ use lib::llvm::{Float, Double, X86_FP80, PPC_FP128, FP128};
use middle::trans::context::CrateContext;
use syntax::ast;
use syntax::abi::{X86, X86_64, Arm, Mips};
use syntax::abi::{X86, X86_64, Arm, Mips, Mipsel};
use std::c_str::ToCStr;
use std::mem;
@ -106,7 +106,7 @@ impl Type {
pub fn int(ccx: &CrateContext) -> Type {
match ccx.tcx.sess.targ_cfg.arch {
X86 | Arm | Mips => Type::i32(ccx),
X86 | Arm | Mips | Mipsel => Type::i32(ccx),
X86_64 => Type::i64(ccx)
}
}

1
src/librustrt/libunwind.rs
View File

@ -69,6 +69,7 @@ pub static unwinder_private_data_size: int = 20;
pub static unwinder_private_data_size: int = 5;
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
pub static unwinder_private_data_size: int = 2;
pub struct _Unwind_Exception {

4
src/librustrt/mutex.rs
View File

@ -415,6 +415,8 @@ mod imp {
static __SIZEOF_PTHREAD_MUTEX_T: uint = 24 - 8;
#[cfg(target_arch = "mips")]
static __SIZEOF_PTHREAD_MUTEX_T: uint = 24 - 8;
#[cfg(target_arch = "mipsel")]
static __SIZEOF_PTHREAD_MUTEX_T: uint = 24 - 8;
#[cfg(target_arch = "x86_64")]
static __SIZEOF_PTHREAD_COND_T: uint = 48 - 8;
#[cfg(target_arch = "x86")]
@ -423,6 +425,8 @@ mod imp {
static __SIZEOF_PTHREAD_COND_T: uint = 48 - 8;
#[cfg(target_arch = "mips")]
static __SIZEOF_PTHREAD_COND_T: uint = 48 - 8;
#[cfg(target_arch = "mipsel")]
static __SIZEOF_PTHREAD_COND_T: uint = 48 - 8;
#[repr(C)]
pub struct pthread_mutex_t {

2
src/librustrt/stack.rs
View File

@ -217,6 +217,7 @@ pub unsafe fn record_sp_limit(limit: uint) {
// mips, arm - Some brave soul can port these to inline asm, but it's over
// my head personally
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
#[cfg(target_arch = "arm", not(target_os = "ios"))] #[inline(always)]
unsafe fn target_record_sp_limit(limit: uint) {
use libc::c_void;
@ -298,6 +299,7 @@ pub unsafe fn get_sp_limit() -> uint {
// mips, arm - Some brave soul can port these to inline asm, but it's over
// my head personally
#[cfg(target_arch = "mips")]
#[cfg(target_arch = "mipsel")]
#[cfg(target_arch = "arm", not(target_os = "ios"))] #[inline(always)]
unsafe fn target_get_sp_limit() -> uint {
use libc::c_void;

4
src/libstd/os.rs
View File

@ -1746,6 +1746,10 @@ mod arch_consts {
pub static ARCH: &'static str = "mips";
}
#[cfg(target_arch = "mipsel")]
mod arch_consts {
pub static ARCH: &'static str = "mipsel";
}
#[cfg(test)]
mod tests {

3
src/libsyntax/abi.rs
View File

@ -41,7 +41,8 @@ pub enum Architecture {
X86,
X86_64,
Arm,
Mips
Mips,
Mipsel
}
static IntelBits: u32 = (1 << (X86 as uint)) | (1 << (X86_64 as uint));

88
src/rt/arch/mipsel/_context.S Normal file
View File

@ -0,0 +1,88 @@
// Mark stack as non-executable
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack, "", @progbits
#endif
.text
.globl rust_swap_registers
.align 2
.set nomips16
.ent rust_swap_registers
rust_swap_registers:
.set noreorder
.set nomacro
.set noat
sw $1, 1 * 4($4)
sw $2, 2 * 4($4)
sw $3, 3 * 4($4)
sw $4, 4 * 4($4)
sw $5, 5 * 4($4)
sw $6, 6 * 4($4)
sw $7, 7 * 4($4)
sw $8, 8 * 4($4)
sw $9, 9 * 4($4)
sw $10, 10 * 4($4)
sw $11, 11 * 4($4)
sw $12, 12 * 4($4)
sw $13, 13 * 4($4)
sw $14, 14 * 4($4)
sw $15, 15 * 4($4)
sw $16, 16 * 4($4)
sw $17, 17 * 4($4)
sw $18, 18 * 4($4)
sw $19, 19 * 4($4)
sw $20, 20 * 4($4)
sw $21, 21 * 4($4)
sw $22, 22 * 4($4)
sw $23, 23 * 4($4)
sw $24, 24 * 4($4)
sw $25, 25 * 4($4)
sw $26, 26 * 4($4)
sw $27, 27 * 4($4)
sw $28, 28 * 4($4)
sw $29, 29 * 4($4)
sw $30, 30 * 4($4)
sw $31, 31 * 4($4)
lw $1, 1 * 4($5)
lw $2, 2 * 4($5)
lw $3, 3 * 4($5)
lw $4, 4 * 4($5)
lw $6, 6 * 4($5)
lw $7, 7 * 4($5)
lw $8, 8 * 4($5)
lw $9, 9 * 4($5)
lw $10, 10 * 4($5)
lw $11, 11 * 4($5)
lw $12, 12 * 4($5)
lw $13, 13 * 4($5)
lw $14, 14 * 4($5)
lw $15, 15 * 4($5)
lw $16, 16 * 4($5)
lw $17, 17 * 4($5)
lw $18, 18 * 4($5)
lw $19, 19 * 4($5)
lw $20, 20 * 4($5)
lw $21, 21 * 4($5)
lw $22, 22 * 4($5)
lw $23, 23 * 4($5)
lw $24, 24 * 4($5)
lw $25, 25 * 4($5)
lw $26, 26 * 4($5)
lw $27, 27 * 4($5)
lw $28, 28 * 4($5)
lw $29, 29 * 4($5)
lw $30, 30 * 4($5)
lw $31, 31 * 4($5)
lw $5, 5 * 4($5)
jr $31
nop
.end rust_swap_registers

43
src/rt/arch/mipsel/morestack.S Normal file
View File

@ -0,0 +1,43 @@
// Mark stack as non-executable
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack, "", @progbits
#endif
/* See i386/morestack.S for the lengthy, general explanation. */
.text
.globl rust_stack_exhausted
.globl __morestack
.hidden __morestack
.cfi_startproc
.set nomips16
.ent __morestack
__morestack:
.set noreorder
.set nomacro
addiu $29, $29, -4
sw $30, 0($29)
// 16 = 4 (current) + 12 (previous)
.cfi_def_cfa_offset 16
.cfi_offset 31, -4
.cfi_offset 30, -16
move $30, $29
.cfi_def_cfa_register 30
// O32 ABI always reserves 16 bytes for arguments
addiu $29, $29, -16
lw $25, %call16(rust_stack_exhausted)($28)
jalr $25
nop
// the above function make sure that we never get here
.end __morestack
.cfi_endproc

40
src/rt/arch/mipsel/record_sp.S Normal file
View File

@ -0,0 +1,40 @@
// Mark stack as non-executable
#if defined(__linux__) && defined(__ELF__)
.section .note.GNU-stack, "", @progbits
#endif
.text
.globl record_sp_limit
.align 2
.set nomips16
.ent record_sp_limit
record_sp_limit:
.set noreorder
.set nomacro
.set push
.set mips32r2
rdhwr $3, $29
.set pop
addiu $3, $3, -0x7004
sw $4, 0($3)
jr $31
nop
.end record_sp_limit
.globl get_sp_limit
.align 2
.set nomips16
.ent get_sp_limit
get_sp_limit:
.set noreorder
.set nomacro
.set push
.set mips32r2
rdhwr $3, $29
.set pop
addiu $3, $3, -0x7004
lw $2, 0($3)
jr $31
nop
.end get_sp_limit