Add built in PSP target

src/librustc_target/spec/mipsel_sony_psp.rs

@@ -0,0 +1,55 @@
+use crate::spec::{LinkArgs, LinkerFlavor, LldFlavor, RelocModel};
+use crate::spec::{Target, TargetOptions, TargetResult};
+use std::{env, fs, io, path::PathBuf};
+
+// The PSP has custom linker requirements.
+const LINKER_SCRIPT: &str = include_str!("./mipsel_sony_psp_linker_script.ld");
+
+fn write_script() -> io::Result<PathBuf> {
+    let path = env::temp_dir().join("rustc-mipsel-sony-psp-linkfile.ld");
+    fs::write(&path, LINKER_SCRIPT)?;
+    Ok(path)
+}
+
+pub fn target() -> TargetResult {
+    let script = write_script().map_err(|e| format!("failed to write link script: {}", e))?;
+
+    let mut pre_link_args = LinkArgs::new();
+    pre_link_args.insert(
+        LinkerFlavor::Lld(LldFlavor::Ld),
+        vec![
+            "--eh-frame-hdr".to_string(),
+            "--emit-relocs".to_string(),
+            "--script".to_string(),
+            script.display().to_string(),
+        ],
+    );
+
+    Ok(Target {
+        llvm_target: "mipsel-sony-psp".to_string(),
+        target_endian: "little".to_string(),
+        target_pointer_width: "32".to_string(),
+        target_c_int_width: "32".to_string(),
+        data_layout: "e-m:m-p:32:32-i8:8:32-i16:16:32-i64:64-n32-S64".to_string(),
+        arch: "mips".to_string(),
+        target_os: "psp".to_string(),
+        target_env: "".to_string(),
+        target_vendor: "sony".to_string(),
+        linker_flavor: LinkerFlavor::Lld(LldFlavor::Ld),
+
+        options: TargetOptions {
+            cpu: "mips2".to_string(),
+            executables: true,
+            linker: Some("rust-lld".to_owned()),
+            relocation_model: RelocModel::Static,
+
+            // PSP FPU only supports single precision floats.
+            features: "+single-float".to_string(),
+
+            // PSP does not support trap-on-condition instructions.
+            llvm_args: vec!["-mno-check-zero-division".to_string()],
+            pre_link_args,
+            ..Default::default()
+        },
+    })
+}

src/librustc_target/spec/mipsel_sony_psp_linker_script.ld

@@ -0,0 +1,289 @@
+/*
+ * Copyright (c) 2005  adresd
+ * Copyright (c) 2005  Marcus R. Brown
+ * Copyright (c) 2005  James Forshaw
+ * Copyright (c) 2005  John Kelley
+ * Copyright (c) 2005  Jesper Svennevid
+ * All rights reserved.
+ * 
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ * 1. Redistributions of source code must retain the above copyright
+ *    notice, this list of conditions and the following disclaimer.
+ * 2. Redistributions in binary form must reproduce the above copyright
+ *    notice, this list of conditions and the following disclaimer in the
+ *    documentation and/or other materials provided with the distribution.
+ * 3. The names of the authors may not be used to endorse or promote products
+ *    derived from this software without specific prior written permission.
+ * 
+ * THIS SOFTWARE IS PROVIDED BY THE AUTHORS ``AS IS'' AND ANY EXPRESS OR
+ * IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES
+ * OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE DISCLAIMED.
+ * IN NO EVENT SHALL THE AUTHORS BE LIABLE FOR ANY DIRECT, INDIRECT,
+ * INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT
+ * NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF
+ * THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ */
+
+OUTPUT_ARCH(mips:allegrex)
+ENTRY(module_start)
+SECTIONS
+{
+  /* Read-only sections, merged into text segment: */
+  PROVIDE (__executable_start = 0x0); . = 0x0;
+  .interp         : { *(.interp) }
+  .dynamic        : { *(.dynamic) }
+  .hash           : { *(.hash) }
+  .dynsym         : { *(.dynsym) }
+  .dynstr         : { *(.dynstr) }
+  .gnu.version    : { *(.gnu.version) }
+  .gnu.version_d  : { *(.gnu.version_d) }
+  .gnu.version_r  : { *(.gnu.version_r) }
+  .rel.text       : { *(.rel.text .rel.text.* .rel.gnu.linkonce.t.*) }
+  .rela.text      : { *(.rela.text .rela.text.* .rela.gnu.linkonce.t.*) }
+  .rel.init       : { *(.rel.init) }
+  .rela.init      : { *(.rela.init) }
+  .rel.fini       : { *(.rel.fini) }
+  .rela.fini      : { *(.rela.fini) }
+  /* PSP-specific relocations. */
+  .rel.sceStub.text   : { *(.rel.sceStub.text) *(SORT(.rel.sceStub.text.*)) }
+  .rel.lib.ent.top    : { *(.rel.lib.ent.top) }
+  .rel.lib.ent        : { *(.rel.lib.ent) }
+  .rel.lib.ent.btm    : { *(.rel.lib.ent.btm) }
+  .rel.lib.stub.top   : { *(.rel.lib.stub.top) }
+  .rel.lib.stub       : { *(.rel.lib.stub) }
+  .rel.lib.stub.btm   : { *(.rel.lib.stub.btm) }
+  .rel.rodata.sceModuleInfo   : { *(.rel.rodata.sceModuleInfo) }
+  .rel.rodata.sceResident     : { *(.rel.rodata.sceResident) }
+  .rel.rodata.sceNid          : { *(.rel.rodata.sceNid) *(SORT(.rel.rodata.sceNid.*)) }
+  .rel.rodata.sceVstub        : { *(.rel.rodata.sceVstub) *(SORT(.rel.rodata.sceVstub.*)) }
+  .rel.rodata     : { *(.rel.rodata .rel.rodata.* .rel.gnu.linkonce.r.*) }
+  .rela.rodata    : { *(.rela.rodata .rela.rodata.* .rela.gnu.linkonce.r.*) }
+  .rel.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rela.data.rel.ro   : { *(.rel.data.rel.ro*) }
+  .rel.data       : { *(.rel.data .rel.data.* .rel.gnu.linkonce.d.*) }
+  .rela.data      : { *(.rela.data .rela.data.* .rela.gnu.linkonce.d.*) }
+  .rel.tdata	  : { *(.rel.tdata .rel.tdata.* .rel.gnu.linkonce.td.*) }
+  .rela.tdata	  : { *(.rela.tdata .rela.tdata.* .rela.gnu.linkonce.td.*) }
+  .rel.tbss	  : { *(.rel.tbss .rel.tbss.* .rel.gnu.linkonce.tb.*) }
+  .rela.tbss	  : { *(.rela.tbss .rela.tbss.* .rela.gnu.linkonce.tb.*) }
+  .rel.ctors      : { *(.rel.ctors) }
+  .rela.ctors     : { *(.rela.ctors) }
+  .rel.dtors      : { *(.rel.dtors) }
+  .rela.dtors     : { *(.rela.dtors) }
+  .rel.got        : { *(.rel.got) }
+  .rela.got       : { *(.rela.got) }
+  .rel.sdata      : { *(.rel.sdata .rel.sdata.* .rel.gnu.linkonce.s.*) }
+  .rela.sdata     : { *(.rela.sdata .rela.sdata.* .rela.gnu.linkonce.s.*) }
+  .rel.sbss       : { *(.rel.sbss .rel.sbss.* .rel.gnu.linkonce.sb.*) }
+  .rela.sbss      : { *(.rela.sbss .rela.sbss.* .rela.gnu.linkonce.sb.*) }
+  .rel.sdata2     : { *(.rel.sdata2 .rel.sdata2.* .rel.gnu.linkonce.s2.*) }
+  .rela.sdata2    : { *(.rela.sdata2 .rela.sdata2.* .rela.gnu.linkonce.s2.*) }
+  .rel.sbss2      : { *(.rel.sbss2 .rel.sbss2.* .rel.gnu.linkonce.sb2.*) }
+  .rela.sbss2     : { *(.rela.sbss2 .rela.sbss2.* .rela.gnu.linkonce.sb2.*) }
+  .rel.bss        : { *(.rel.bss .rel.bss.* .rel.gnu.linkonce.b.*) }
+  .rela.bss       : { *(.rela.bss .rela.bss.* .rela.gnu.linkonce.b.*) }
+  .rel.plt        : { *(.rel.plt) }
+  .rela.plt       : { *(.rela.plt) }
+
+  /* Start the text section at 0x0 for PRX generation */
+  . = 0;
+
+  .text           :
+  {
+    _ftext = . ;
+    *(.text .stub .text.* .gnu.linkonce.t.*)
+    KEEP (*(.text.*personality*))
+    /* .gnu.warning sections are handled specially by elf32.em.  */
+    *(.gnu.warning)
+    *(.mips16.fn.*) *(.mips16.call.*)
+  } =0
+  .init           :
+  {
+    KEEP (*(.init))
+  } =0
+  .plt            : { *(.plt) }
+  .fini           :
+  {
+    KEEP (*(.fini))
+  } =0
+  /* PSP library stub functions. */
+  .sceStub.text     : { *(.sceStub.text) *(SORT(.sceStub.text.*)) }
+  PROVIDE (__etext = .);
+  PROVIDE (_etext = .);
+  PROVIDE (etext = .);
+  /* PSP library entry table and library stub table. */
+  .lib.ent.top    : { *(.lib.ent.top) }
+  .lib.ent        : { *(.lib.ent) }
+  .lib.ent.btm    : { *(.lib.ent.btm) }
+  .lib.stub.top   : { *(.lib.stub.top) }
+  .lib.stub       : { *(.lib.stub) }
+  .lib.stub.btm   : { *(.lib.stub.btm) }
+  /* PSP read-only data for module info, NIDs, and Vstubs.  The
+     .rodata.sceModuleInfo section must appear before the .rodata section
+     otherwise it would get absorbed into .rodata and the PSP bootloader
+     would be unable to locate the module info structure. */
+  .rodata.sceModuleInfo    : { *(.rodata.sceModuleInfo) }
+  .rodata.sceResident      : { *(.rodata.sceResident) }
+  .rodata.sceNid           : { KEEP(*(.rodata.sceNid)) KEEP(*(SORT(.rodata.sceNid.*))) }
+  .rodata.sceVstub         : { *(.rodata.sceVstub) *(SORT(.rodata.sceVstub.*)) }
+  .rodata         : { *(.rodata .rodata.* .gnu.linkonce.r.*) }
+  .rodata1        : { *(.rodata1) }
+  .sdata2         : { *(.sdata2 .sdata2.* .gnu.linkonce.s2.*) }
+  .sbss2          : { *(.sbss2 .sbss2.* .gnu.linkonce.sb2.*) }
+  .gcc_except_table   : ONLY_IF_RO { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+
+  /* Exception handling  */
+  .eh_frame_hdr :
+  {
+    KEEP(*(.eh_frame_hdr))
+  }
+
+  __eh_frame_hdr_start = SIZEOF(.eh_frame_hdr) > 0 ? ADDR(.eh_frame_hdr) : 0;
+  __eh_frame_hdr_end = SIZEOF(.eh_frame_hdr) > 0 ? . : 0;
+
+  .eh_frame :
+  {
+    __eh_frame_start = .;
+    KEEP(*(.eh_frame))
+    __eh_frame_end = .;
+  }
+
+  /* Adjust the address for the data segment.  We want to adjust up to
+     the same address within the page on the next page up.  */
+  . = ALIGN(256) + (. & (256 - 1));
+
+  .gcc_except_table   : ONLY_IF_RW { KEEP (*(.gcc_except_table)) *(.gcc_except_table.*) }
+  /* Thread Local Storage sections  */
+  .tdata	  : { *(.tdata .tdata.* .gnu.linkonce.td.*) }
+  .tbss		  : { *(.tbss .tbss.* .gnu.linkonce.tb.*) *(.tcommon) }
+  /* Ensure the __preinit_array_start label is properly aligned.  We
+     could instead move the label definition inside the section, but
+     the linker would then create the section even if it turns out to
+     be empty, which isn't pretty.  */
+  . = ALIGN(32 / 8);
+  PROVIDE (__preinit_array_start = .);
+  .preinit_array     : { KEEP (*(.preinit_array)) }
+  PROVIDE (__preinit_array_end = .);
+  PROVIDE (__init_array_start = .);
+  .init_array     : { KEEP (*(.init_array)) }
+  PROVIDE (__init_array_end = .);
+  PROVIDE (__fini_array_start = .);
+  .fini_array     : { KEEP (*(.fini_array)) }
+  PROVIDE (__fini_array_end = .);
+  .ctors          :
+  {
+    /* gcc uses crtbegin.o to find the start of
+       the constructors, so we make sure it is
+       first.  Because this is a wildcard, it
+       doesn't matter if the user does not
+       actually link against crtbegin.o; the
+       linker won't look for a file to match a
+       wildcard.  The wildcard also means that it
+       doesn't matter which directory crtbegin.o
+       is in.  */
+    KEEP (*crtbegin*.o(.ctors))
+    /* We don't want to include the .ctor section from
+       from the crtend.o file until after the sorted ctors.
+       The .ctor section from the crtend file contains the
+       end of ctors marker and it must be last */
+    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .ctors))
+    KEEP (*(SORT(.ctors.*)))
+    KEEP (*(.ctors))
+  }
+  .dtors          :
+  {
+    KEEP (*crtbegin*.o(.dtors))
+    KEEP (*(EXCLUDE_FILE (*crtend*.o ) .dtors))
+    KEEP (*(SORT(.dtors.*)))
+    KEEP (*(.dtors))
+  }
+  .jcr            : { KEEP (*(.jcr)) }
+  .data.rel.ro : { *(.data.rel.ro.local) *(.data.rel.ro*) }
+  .data           :
+  {
+    _fdata = . ;
+    *(.data .data.* .gnu.linkonce.d.*)
+    KEEP (*(.gnu.linkonce.d.*personality*))
+    SORT(CONSTRUCTORS)
+  }
+  .data1          : { *(.data1) }
+  . = .;
+  _gp = ALIGN(16) + 0x7ff0;
+  .got            : { *(.got.plt) *(.got) }
+  /* We want the small data sections together, so single-instruction offsets
+     can access them all, and initialized data all before uninitialized, so
+     we can shorten the on-disk segment size.  */
+  .sdata          :
+  {
+    *(.sdata .sdata.* .gnu.linkonce.s.*)
+  }
+  .lit8           : { *(.lit8) }
+  .lit4           : { *(.lit4) }
+  _edata = .;
+  PROVIDE (edata = .);
+  __bss_start = .;
+  _fbss = .;
+  .sbss           :
+  {
+    PROVIDE (__sbss_start = .);
+    PROVIDE (___sbss_start = .);
+    *(.dynsbss)
+    *(.sbss .sbss.* .gnu.linkonce.sb.*)
+    *(.scommon)
+    PROVIDE (__sbss_end = .);
+    PROVIDE (___sbss_end = .);
+  }
+  .bss            :
+  {
+   *(.dynbss)
+   *(.bss .bss.* .gnu.linkonce.b.*)
+   *(COMMON)
+   /* Align here to ensure that the .bss section occupies space up to
+      _end.  Align after .bss to ensure correct alignment even if the
+      .bss section disappears because there are no input sections.  */
+   . = ALIGN(32 / 8);
+  }
+  . = ALIGN(32 / 8);
+  _end = .;
+  PROVIDE (end = .);
+  /* Stabs debugging sections.  */
+  .stab          0 : { *(.stab) }
+  .stabstr       0 : { *(.stabstr) }
+  .stab.excl     0 : { *(.stab.excl) }
+  .stab.exclstr  0 : { *(.stab.exclstr) }
+  .stab.index    0 : { *(.stab.index) }
+  .stab.indexstr 0 : { *(.stab.indexstr) }
+  .comment       0 : { *(.comment) }
+  /* DWARF debug sections.
+     Symbols in the DWARF debugging sections are relative to the beginning
+     of the section so we begin them at 0.  */
+  /* DWARF 1 */
+  .debug          0 : { *(.debug) }
+  .line           0 : { *(.line) }
+  /* GNU DWARF 1 extensions */
+  .debug_srcinfo  0 : { *(.debug_srcinfo) }
+  .debug_sfnames  0 : { *(.debug_sfnames) }
+  /* DWARF 1.1 and DWARF 2 */
+  .debug_aranges  0 : { *(.debug_aranges) }
+  .debug_pubnames 0 : { *(.debug_pubnames) }
+  /* DWARF 2 */
+  .debug_info     0 : { *(.debug_info .gnu.linkonce.wi.*) }
+  .debug_abbrev   0 : { *(.debug_abbrev) }
+  .debug_line     0 : { *(.debug_line) }
+  .debug_frame    0 : { *(.debug_frame) }
+  .debug_str      0 : { *(.debug_str) }
+  .debug_loc      0 : { *(.debug_loc) }
+  .debug_macinfo  0 : { *(.debug_macinfo) }
+  /* SGI/MIPS DWARF 2 extensions */
+  .debug_weaknames 0 : { *(.debug_weaknames) }
+  .debug_funcnames 0 : { *(.debug_funcnames) }
+  .debug_typenames 0 : { *(.debug_typenames) }
+  .debug_varnames  0 : { *(.debug_varnames) }
+  /DISCARD/ : { *(.comment) *(.pdr) }
+  /DISCARD/ : { *(.note.GNU-stack) }
+}

src/librustc_target/spec/mod.rs

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