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Improvements for aarch64 support

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This commit is contained in:
Jeremy Soller
2021-01-11 08:52:20 -07:00
parent 04fd4520d3
commit 3c1300e8ec
8 changed files with 552 additions and 24 deletions
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Makefile
+15 -12
View File
@@ -1,20 +1,16 @@
TARGET?=
TARGET?=$(shell rustc -Z unstable-options --print target-spec-json | grep llvm-target | cut -d '"' -f4)
CARGO?=cargo
CARGO_TEST?=$(CARGO)
CARGOFLAGS?=
RUSTCFLAGS?=
export OBJCOPY?=objcopy
# When using xargo, build it in local location
export XARGO_HOME=$(CURDIR)/target/xargo
export OBJCOPY=objcopy
BUILD=target
ifneq ($(TARGET),)
BUILD="target/$(TARGET)"
CARGOFLAGS+="--target=$(TARGET)"
endif
BUILD="target/$(TARGET)"
CARGOFLAGS+="--target=$(TARGET)"
ifeq ($(TARGET),aarch64-unknown-linux-gnu)
export CC=aarch64-linux-gnu-gcc
@@ -30,6 +26,13 @@ ifeq ($(TARGET),aarch64-unknown-redox)
export OBJCOPY=aarch64-unknown-redox-objcopy
endif
ifeq ($(TARGET),x86_64-unknown-linux-gnu)
export CC=x86_64-linux-gnu-gcc
export LD=x86_64-linux-gnu-ld
export AR=x86_64-linux-gnu-ar
export OBJCOPY=x86_64-linux-gnu-objcopy
endif
ifeq ($(TARGET),x86_64-unknown-redox)
export CC=x86_64-unknown-redox-gcc
export LD=x86_64-unknown-redox-ld
@@ -150,7 +153,7 @@ $(BUILD)/debug/ld_so.o: $(SRC)
touch $@
$(BUILD)/debug/ld_so: $(BUILD)/debug/ld_so.o $(BUILD)/debug/crti.o $(BUILD)/debug/libc.a $(BUILD)/debug/crtn.o
$(LD) --no-relax -T src/ld_so/ld_script --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
$(LD) --no-relax -T src/ld_so/ld_script/$(TARGET).ld --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
# Release targets
@@ -188,7 +191,7 @@ $(BUILD)/release/ld_so.o: $(SRC)
touch $@
$(BUILD)/release/ld_so: $(BUILD)/release/ld_so.o $(BUILD)/release/crti.o $(BUILD)/release/libc.a $(BUILD)/release/crtn.o
$(LD) --no-relax -T src/ld_so/ld_script --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
$(LD) --no-relax -T src/ld_so/ld_script/$(TARGET).ld --allow-multiple-definition --gc-sections --gc-keep-exported $^ -o $@
# Other targets
@@ -200,7 +203,7 @@ $(BUILD)/openlibm: openlibm
touch $@
$(BUILD)/openlibm/libopenlibm.a: $(BUILD)/openlibm $(BUILD)/release/librelibc.a
$(MAKE) CC=$(CC) CPPFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libopenlibm.a
$(MAKE) AR=$(AR) CC=$(CC) LD=$(LD) CPPFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libopenlibm.a
$(BUILD)/pthreads-emb: pthreads-emb
rm -rf $@ $@.partial
@@ -210,4 +213,4 @@ $(BUILD)/pthreads-emb: pthreads-emb
touch $@
$(BUILD)/pthreads-emb/libpthread.a: $(BUILD)/pthreads-emb $(BUILD)/release/librelibc.a
$(MAKE) CC=$(CC) CFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libpthread.a
$(MAKE) AR=$(AR) CC=$(CC) LD=$(LD) CFLAGS="-fno-stack-protector -I $(shell pwd)/include -I $(shell pwd)/target/include" -C $< libpthread.a
src/ld_so/ld_script/aarch64-unknown-redox.ld
+245
View File
@@ -0,0 +1,245 @@
/* Script for -z combreloc */
/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
Copying and distribution of this script, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. */
OUTPUT_FORMAT("elf64-littleaarch64", "elf64-littleaarch64",
"elf64-littleaarch64")
OUTPUT_ARCH(aarch64)
ENTRY(_start)
SEARCH_DIR("/x86_64-unknown-redox/lib");
SEARCH_DIR("/usr/local/lib64");
SEARCH_DIR("/lib64");
SEARCH_DIR("/usr/lib64");
SEARCH_DIR("/usr/local/lib");
SEARCH_DIR("/lib");
SEARCH_DIR("/usr/lib");
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src/ld_so/ld_script/x86_64-unknown-linux.ld
+248
View File
@@ -0,0 +1,248 @@
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Copying and distribution of this script, with or without modification,
are permitted in any medium without royalty provided the copyright
notice and this notice are preserved. */
OUTPUT_FORMAT("elf64-x86-64", "elf64-x86-64",
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OUTPUT_ARCH(i386:x86-64)
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.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_line.* .debug_line_end) }
.debug_frame 0 : { *(.debug_frame) }
.debug_str 0 : { *(.debug_str) }
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.debug_weaknames 0 : { *(.debug_weaknames) }
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/* DWARF 3 */
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/* DWARF Extension. */
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.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
}
src/ld_so/ld_script → src/ld_so/ld_script/x86_64-unknown-redox.ld
View File
src/ld_so/src/lib.rs
+11 -11
View File
@@ -7,6 +7,17 @@
#[naked]
#[no_mangle]
pub unsafe extern "C" fn _start() {
#[cfg(target_arch = "aarch64")]
llvm_asm!("
mov x0, sp
bl relibc_ld_so_start
# TODO: aarch64
"
:
:
:
: "volatile"
);
#[cfg(target_arch = "x86_64")]
llvm_asm!("
# rsi = _start + 5
@@ -40,17 +51,6 @@ next: pop rsi
:
: "intel", "volatile"
);
#[cfg(target_arch = "aarch64")]
llvm_asm!("
mov x0, sp
bl ld_so_start
TODO
"
:
:
:
: "volatile"
);
}
#[naked]
src/ld_so/tcb.rs
+15 -1
View File
@@ -204,6 +204,14 @@ impl Tcb {
))
}
/// Architecture specific code to read a usize from the TCB - x86_64
#[inline(always)]
#[cfg(target_arch = "aarch64")]
unsafe fn arch_read(offset: usize) -> usize {
//TODO: aarch64
unimplemented!("arch_read not implemented on aarch64");
}
/// Architecture specific code to read a usize from the TCB - x86_64
#[inline(always)]
#[cfg(target_arch = "x86_64")]
@@ -227,7 +235,13 @@ impl Tcb {
syscall!(ARCH_PRCTL, ARCH_SET_FS, tp);
}
/// OS and architecture specific code to activate TLS - Linux x86_64
/// OS and architecture specific code to activate TLS - Redox aarch64
#[cfg(all(target_os = "redox", target_arch = "aarch64"))]
unsafe fn os_arch_activate(tp: usize) {
//TODO: aarch64
}
/// OS and architecture specific code to activate TLS - Redox x86_64
#[cfg(all(target_os = "redox", target_arch = "x86_64"))]
unsafe fn os_arch_activate(tp: usize) {
//TODO: Consider setting FS offset to TCB pointer
src/platform/redox/mod.rs
+6
View File
@@ -797,6 +797,12 @@ impl Pal for Sys {
res as c_int
}
#[cfg(target_arch = "aarch64")]
unsafe fn pte_clone(stack: *mut usize) -> pid_t {
//TODO: aarch64
unimplemented!("pte_clone not implemented on aarch64");
}
#[cfg(target_arch = "x86_64")]
unsafe fn pte_clone(stack: *mut usize) -> pid_t {
let flags = syscall::CLONE_VM
src/platform/redox/ptrace.rs
+12
View File
@@ -90,6 +90,18 @@ pub fn get_session(
}
}
#[cfg(target_arch = "aarch64")]
fn inner_ptrace(
request: c_int,
pid: pid_t,
addr: *mut c_void,
data: *mut c_void,
) -> io::Result<c_int> {
//TODO: aarch64
unimplemented!("inner_ptrace not implemented on aarch64");
}
#[cfg(target_arch = "x86_64")]
fn inner_ptrace(
request: c_int,
pid: pid_t,