Improvements for aarch64 support

parent 04fd4520
Pipeline #8952 failed with stages
in 63 minutes and 12 seconds
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
/* Script for -z combreloc */
/* Copyright (C) 2014-2020 Free Software Foundation, Inc.
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.debug_funcnames 0 : { *(.debug_funcnames) }
.debug_typenames 0 : { *(.debug_typenames) }
.debug_varnames 0 : { *(.debug_varnames) }
/* DWARF 3 */
.debug_pubtypes 0 : { *(.debug_pubtypes) }
.debug_ranges 0 : { *(.debug_ranges) }
/* DWARF Extension. */
.debug_macro 0 : { *(.debug_macro) }
.debug_addr 0 : { *(.debug_addr) }
.gnu.attributes 0 : { KEEP (*(.gnu.attributes)) }
/DISCARD/ : { *(.note.GNU-stack) *(.gnu_debuglink) *(.gnu.lto_*) }
}
......@@ -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]
......
......@@ -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
......
......@@ -797,6 +797,12 @@ impl Pal for Sys {
res as c_int
}