38 lines
1.6 KiB
Diff
38 lines
1.6 KiB
Diff
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From 3a6a1dc7b501846856faeed6b83af2f12bda782f Mon Sep 17 00:00:00 2001
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From: Xi Ruoyao <xry111@xry111.site>
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Date: Mon, 29 Apr 2024 15:26:24 +0800
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Subject: [PATCH 06/15] LoongArch: Use "$fcsr0" instead of "$r0" in
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_FPU_{GET,SET}CW
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Clang inline-asm parser does not allow using "$r0" in
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movfcsr2gr/movgr2fcsr, so everything using _FPU_{GET,SET}CW is now
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failing to build with Clang on LoongArch. As we now requires Binutils
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>= 2.41 which supports using "$fcsr0" here, use it instead of "$r0" to
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fix the issue.
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Link: https://github.com/loongson-community/discussions/issues/53#issuecomment-2081507390
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Link: https://sourceware.org/git/?p=binutils-gdb.git;a=commit;h=4142b2368353
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Signed-off-by: Xi Ruoyao <xry111@xry111.site>
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---
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sysdeps/loongarch/fpu_control.h | 4 ++--
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1 file changed, 2 insertions(+), 2 deletions(-)
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diff --git a/sysdeps/loongarch/fpu_control.h b/sysdeps/loongarch/fpu_control.h
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index ffb01ca5..3c8ae8b5 100644
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--- a/sysdeps/loongarch/fpu_control.h
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+++ b/sysdeps/loongarch/fpu_control.h
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@@ -91,8 +91,8 @@ typedef unsigned int fpu_control_t __attribute__ ((__mode__ (__SI__)));
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/* Macros for accessing the hardware control word. */
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extern fpu_control_t __loongarch_fpu_getcw (void) __THROW;
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extern void __loongarch_fpu_setcw (fpu_control_t) __THROW;
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-#define _FPU_GETCW(cw) __asm__ volatile ("movfcsr2gr %0,$r0" : "=r"(cw))
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-#define _FPU_SETCW(cw) __asm__ volatile ("movgr2fcsr $r0,%0" : : "r"(cw))
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+#define _FPU_GETCW(cw) __asm__ volatile ("movfcsr2gr %0,$fcsr0" : "=r"(cw))
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+#define _FPU_SETCW(cw) __asm__ volatile ("movgr2fcsr $fcsr0,%0" : : "r"(cw))
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/* Default control word set at startup. */
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extern fpu_control_t __fpu_control;
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--
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2.43.0
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