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auto merge of #10021 : alexcrichton/rust/asm-now-analyzed-correctly, r=luqmana
We got a snapshot, taking care of a note to myself.
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commit
8c97c5ebfd
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@ -391,36 +391,32 @@ unsafe fn target_record_sp_limit(limit: uint) {
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/// As with the setter, this function does not have a __morestack header and can
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/// therefore be called in a "we're out of stack" situation.
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#[inline(always)]
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// NOTE: after the next snapshot, can remove the initialization before inline
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// assembly due to an improvement in how it's handled, then this specific
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// allow directive should get removed.
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#[allow(dead_assignment)]
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pub unsafe fn get_sp_limit() -> uint {
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return target_get_sp_limit();
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// x86-64
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#[cfg(target_arch = "x86_64", target_os = "macos")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movq $$0x60+90*8, %rsi
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movq %gs:(%rsi), $0" : "=r"(limit) :: "rsi" : "volatile");
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return limit;
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}
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#[cfg(target_arch = "x86_64", target_os = "linux")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movq %fs:112, $0" : "=r"(limit) ::: "volatile");
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return limit;
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}
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#[cfg(target_arch = "x86_64", target_os = "win32")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movq %gs:0x28, $0" : "=r"(limit) ::: "volatile");
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return limit;
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}
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#[cfg(target_arch = "x86_64", target_os = "freebsd")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movq %fs:24, $0" : "=r"(limit) ::: "volatile");
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return limit;
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}
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@ -428,7 +424,7 @@ unsafe fn target_get_sp_limit() -> uint {
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// x86
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#[cfg(target_arch = "x86", target_os = "macos")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movl $$0x48+90*4, %eax
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movl %gs:(%eax), $0" : "=r"(limit) :: "eax" : "volatile");
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return limit;
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@ -436,13 +432,13 @@ unsafe fn target_get_sp_limit() -> uint {
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#[cfg(target_arch = "x86", target_os = "linux")]
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#[cfg(target_arch = "x86", target_os = "freebsd")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movl %gs:48, $0" : "=r"(limit) ::: "volatile");
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return limit;
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}
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#[cfg(target_arch = "x86", target_os = "win32")] #[inline(always)]
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unsafe fn target_get_sp_limit() -> uint {
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let mut limit: uint = 0;
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let limit;
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asm!("movl %fs:0x14, $0" : "=r"(limit) ::: "volatile");
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return limit;
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}
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