Don't compile probestack functions during testing
parent
b3679bcfba
commit
a40cc6a12d
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@ -44,8 +44,8 @@
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#![cfg(not(windows))] // Windows already has builtins to do this
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#![cfg(not(windows))] // Windows already has builtins to do this
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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#[cfg(target_arch = "x86_64")]
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#[cfg(all(target_arch = "x86_64", not(feature = "mangled-names")))]
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pub unsafe extern fn __rust_probestack() {
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pub unsafe extern fn __rust_probestack() {
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// Our goal here is to touch each page between %rsp+8 and %rsp+8-%rax,
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// Our goal here is to touch each page between %rsp+8 and %rsp+8-%rax,
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// ensuring that if any pages are unmapped we'll make a page fault.
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// ensuring that if any pages are unmapped we'll make a page fault.
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@ -87,8 +87,8 @@ pub unsafe extern fn __rust_probestack() {
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}
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}
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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#[cfg(target_arch = "x86")]
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#[cfg(all(target_arch = "x86", not(feature = "mangled-names")))]
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pub unsafe extern fn __rust_probestack() {
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pub unsafe extern fn __rust_probestack() {
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// This is the same as x86_64 above, only translated for 32-bit sizes. Note
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// This is the same as x86_64 above, only translated for 32-bit sizes. Note
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// that on Unix we're expected to restore everything as it was, this
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// that on Unix we're expected to restore everything as it was, this
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12
src/x86.rs
12
src/x86.rs
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@ -8,9 +8,9 @@ use core::intrinsics;
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// NOTE These functions are never mangled as they are not tested against compiler-rt
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// NOTE These functions are never mangled as they are not tested against compiler-rt
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// and mangling ___chkstk would break the `jmp ___chkstk` instruction in __alloca
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// and mangling ___chkstk would break the `jmp ___chkstk` instruction in __alloca
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn ___chkstk_ms() {
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pub unsafe fn ___chkstk_ms() {
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asm!("
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asm!("
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push %ecx
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push %ecx
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@ -34,17 +34,17 @@ pub unsafe fn ___chkstk_ms() {
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}
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}
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// FIXME: __alloca should be an alias to __chkstk
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// FIXME: __alloca should be an alias to __chkstk
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn __alloca() {
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pub unsafe fn __alloca() {
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asm!("jmp ___chkstk // Jump to ___chkstk since fallthrough may be unreliable");
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asm!("jmp ___chkstk // Jump to ___chkstk since fallthrough may be unreliable");
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intrinsics::unreachable();
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intrinsics::unreachable();
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}
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}
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn ___chkstk() {
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pub unsafe fn ___chkstk() {
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asm!("
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asm!("
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push %ecx
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push %ecx
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@ -8,9 +8,9 @@ use core::intrinsics;
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// NOTE These functions are never mangled as they are not tested against compiler-rt
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// NOTE These functions are never mangled as they are not tested against compiler-rt
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// and mangling ___chkstk would break the `jmp ___chkstk` instruction in __alloca
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// and mangling ___chkstk would break the `jmp ___chkstk` instruction in __alloca
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn ___chkstk_ms() {
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pub unsafe fn ___chkstk_ms() {
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asm!("
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asm!("
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push %rcx
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push %rcx
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@ -33,18 +33,18 @@ pub unsafe fn ___chkstk_ms() {
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intrinsics::unreachable();
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intrinsics::unreachable();
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}
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}
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn __alloca() {
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pub unsafe fn __alloca() {
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asm!("mov %rcx,%rax // x64 _alloca is a normal function with parameter in rcx
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asm!("mov %rcx,%rax // x64 _alloca is a normal function with parameter in rcx
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jmp ___chkstk // Jump to ___chkstk since fallthrough may be unreliable");
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jmp ___chkstk // Jump to ___chkstk since fallthrough may be unreliable");
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intrinsics::unreachable();
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intrinsics::unreachable();
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}
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}
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#[cfg(all(windows, target_env = "gnu"))]
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#[cfg(all(windows, target_env = "gnu", not(feature = "mangled-names")))]
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#[naked]
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#[naked]
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#[cfg_attr(not(feature = "mangled-names"), no_mangle)]
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#[no_mangle]
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pub unsafe fn ___chkstk() {
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pub unsafe fn ___chkstk() {
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asm!("
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asm!("
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push %rcx
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push %rcx
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