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Add mipsel-sony-psp target
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‎src/librustc_target/spec/mipsel_sony_psp.rs

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use std::{io, fs, env, path::PathBuf};
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use crate::spec::{LinkerFlavor, LldFlavor, LinkArgs, RelocModel};
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use crate::spec::{Target, TargetOptions, TargetResult};
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// The PSP has custom linker requirements.
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const LINKER_SCRIPT: &str = include_str!("./mipsel_sony_psp_linker_script.ld");
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fn write_script() -> io::Result<PathBuf> {
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let path = env::temp_dir().join("rustc-mipsel-sony-psp-linkfile.ld");
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fs::write(&path, LINKER_SCRIPT)?;
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Ok(path)
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}
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pub fn target() -> TargetResult {
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let script = write_script().map_err(|e| {
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format!("failed to write link script: {}", e)
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})?;
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let mut pre_link_args = LinkArgs::new();
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pre_link_args.insert(
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LinkerFlavor::Lld(LldFlavor::Ld),
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vec![
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"--eh-frame-hdr".to_string(),
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"--emit-relocs".to_string(),
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"--script".to_string(),
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script.display().to_string(),
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],
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);
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Ok(Target {
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llvm_target: "mipsel-sony-psp".to_string(),
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target_endian: "little".to_string(),
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target_pointer_width: "32".to_string(),
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target_c_int_width: "32".to_string(),
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data_layout: "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64".to_string(),
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arch: "mips".to_string(),
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target_os: "psp".to_string(),
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target_env: "".to_string(),
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target_vendor: "sony".to_string(),
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linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
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options: TargetOptions {
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cpu: "mips2".to_string(),
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executables: true,
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linker: Some("rust-lld".to_owned()),
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relocation_model: RelocModel::Static,
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// PSP FPU only supports single precision floats.
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features: "+single-float".to_string(),
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// PSP does not support trap-on-condition instructions.
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llvm_args: vec![
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"-mno-check-zero-division".to_string(),
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],
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pre_link_args,
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..Default::default()
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},
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})
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}

‎src/librustc_target/spec/mipsel_sony_psp_linker_script.ld

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/*
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* Copyright (c) 2005 adresd
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* Copyright (c) 2005 Marcus R. Brown
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* Copyright (c) 2005 James Forshaw
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* Copyright (c) 2005 John Kelley
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* Copyright (c) 2005 Jesper Svennevid
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* All rights reserved.
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions
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* are met:
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* 1. Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* 2. Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* 3. The names of the authors may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
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* IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
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* OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
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* IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
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* INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
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* NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
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* DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
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* THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
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* THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*/
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OUTPUT_ARCH(mips:allegrex)
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ENTRY(module_start)
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SECTIONS
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{
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/* Read-only sections, merged into text segment: */
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PROVIDE (__executable_start = 0x0); . = 0x0;
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.interp : { *(.interp) }
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.dynamic : { *(.dynamic) }
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.hash : { *(.hash) }
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.dynsym : { *(.dynsym) }
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.dynstr : { *(.dynstr) }
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.gnu.version : { *(.gnu.version) }
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.gnu.version_d : { *(.gnu.version_d) }
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.gnu.version_r : { *(.gnu.version_r) }
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.rel.text : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
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.rela.text : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
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.rel.init : { *(.rel.init) }
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.rela.init : { *(.rela.init) }
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.rel.fini : { *(.rel.fini) }
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.rela.fini : { *(.rela.fini) }
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/* PSP-specific relocations. */
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.rel.sceStub.text : { *(.rel.sceStub.text) *(SORT(.rel.sceStub.text.*)) }
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.rel.lib.ent.top : { *(.rel.lib.ent.top) }
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.rel.rodata.sceVstub : { *(.rel.rodata.sceVstub) *(SORT(.rel.rodata.sceVstub.*)) }
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.rel.rodata : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
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.rela.rodata : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
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.rel.data.rel.ro : { *(.rel.data.rel.ro*) }
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.rela.tdata : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
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.rel.tbss : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
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.rela.tbss : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
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.rel.ctors : { *(.rel.ctors) }
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.rel.dtors : { *(.rel.dtors) }
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.rela.dtors : { *(.rela.dtors) }
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.rel.sdata : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
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.rela.sdata : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
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.rel.sbss : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
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.rela.sbss : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) }
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.rel.sdata2 : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
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.rela.sdata2 : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
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.rel.sbss2 : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
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.rela.sbss2 : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
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.rel.bss : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
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.rela.bss : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
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.rel.plt : { *(.rel.plt) }
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.rela.plt : { *(.rela.plt) }
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/* Start the text section at 0x0 for PRX generation */
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. = 0;
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.text :
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{
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_ftext = . ;
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*(.text .stub .text.* .gnu.linkonce.t.*)
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KEEP (*(.text.*personality*))
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/* .gnu.warning sections are handled specially by elf32.em. */
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*(.gnu.warning)
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*(.mips16.fn.*) *(.mips16.call.*)
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} =0
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.init :
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{
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KEEP (*(.init))
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} =0
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.plt : { *(.plt) }
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.fini :
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{
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KEEP (*(.fini))
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} =0
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/* PSP library stub functions. */
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.sceStub.text : { *(.sceStub.text) *(SORT(.sceStub.text.*)) }
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PROVIDE (__etext = .);
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PROVIDE (_etext = .);
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PROVIDE (etext = .);
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/* PSP library entry table and library stub table. */
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.lib.ent.top : { *(.lib.ent.top) }
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.lib.ent : { *(.lib.ent) }
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.lib.ent.btm : { *(.lib.ent.btm) }
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.lib.stub.top : { *(.lib.stub.top) }
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.lib.stub : { *(.lib.stub) }
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.lib.stub.btm : { *(.lib.stub.btm) }
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/* PSP read-only data for module info, NIDs, and Vstubs. The
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.rodata.sceModuleInfo section must appear before the .rodata section
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otherwise it would get absorbed into .rodata and the PSP bootloader
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would be unable to locate the module info structure. */
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.rodata.sceModuleInfo : { *(.rodata.sceModuleInfo) }
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.rodata.sceResident : { *(.rodata.sceResident) }
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.rodata.sceNid : { KEEP(*(.rodata.sceNid)) KEEP(*(SORT(.rodata.sceNid.*))) }
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.rodata.sceVstub : { *(.rodata.sceVstub) *(SORT(.rodata.sceVstub.*)) }
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.rodata : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
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.rodata1 : { *(.rodata1) }
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.sdata2 : { *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) }
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.sbss2 : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) }
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.gcc_except_table : ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
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/* Exception handling */
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.eh_frame_hdr :
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{
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KEEP(*(.eh_frame_hdr))
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}
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__eh_frame_hdr_start = SIZEOF(.eh_frame_hdr) > 0 ? ADDR(.eh_frame_hdr) : 0;
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__eh_frame_hdr_end = SIZEOF(.eh_frame_hdr) > 0 ? . : 0;
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.eh_frame :
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{
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__eh_frame_start = .;
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KEEP(*(.eh_frame))
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__eh_frame_end = .;
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}
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/* Adjust the address for the data segment. We want to adjust up to
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the same address within the page on the next page up. */
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. = ALIGN(256) + (. & (256 - 1));
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.gcc_except_table : ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
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/* Thread Local Storage sections */
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.tdata : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
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.tbss : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
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/* Ensure the __preinit_array_start label is properly aligned. We
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could instead move the label definition inside the section, but
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the linker would then create the section even if it turns out to
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be empty, which isn't pretty. */
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. = ALIGN(32 / 8);
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PROVIDE (__preinit_array_start = .);
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.preinit_array : { KEEP (*(.preinit_array)) }
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PROVIDE (__preinit_array_end = .);
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PROVIDE (__init_array_start = .);
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.init_array : { KEEP (*(.init_array)) }
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PROVIDE (__init_array_end = .);
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PROVIDE (__fini_array_start = .);
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.fini_array : { KEEP (*(.fini_array)) }
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PROVIDE (__fini_array_end = .);
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.ctors :
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{
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/* gcc uses crtbegin.o to find the start of
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the constructors, so we make sure it is
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first. Because this is a wildcard, it
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doesn't matter if the user does not
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actually link against crtbegin.o; the
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linker won't look for a file to match a
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wildcard. The wildcard also means that it
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doesn't matter which directory crtbegin.o
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is in. */
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KEEP (*crtbegin*.o(.ctors))
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/* We don't want to include the .ctor section from
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from the crtend.o file until after the sorted ctors.
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The .ctor section from the crtend file contains the
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end of ctors marker and it must be last */
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KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
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KEEP (*(SORT(.ctors.*)))
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KEEP (*(.ctors))
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}
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.dtors :
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{
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KEEP (*crtbegin*.o(.dtors))
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KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
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KEEP (*(SORT(.dtors.*)))
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KEEP (*(.dtors))
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}
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.jcr : { KEEP (*(.jcr)) }
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.data.rel.ro : { *(.data.rel.ro.local) *(.data.rel.ro*) }
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{
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_fdata = . ;
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*(.data .data.* .gnu.linkonce.d.*)
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KEEP (*(.gnu.linkonce.d.*personality*))
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SORT(CONSTRUCTORS)
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can access them all, and initialized data all before uninitialized, so
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/DISCARD/ : { *(.note.GNU-stack) }
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}

‎src/librustc_target/spec/mod.rs

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@@ -582,6 +582,8 @@ supported_targets! {
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("powerpc-wrs-vxworks", powerpc_wrs_vxworks),
583583
("powerpc-wrs-vxworks-spe", powerpc_wrs_vxworks_spe),
584584
("powerpc64-wrs-vxworks", powerpc64_wrs_vxworks),
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("mipsel-sony-psp", mipsel_sony_psp),
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}
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/// Everything `rustc` knows about how to compile for a specific target.

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