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authorSzabolcs Nagy <nsz@port70.net>2014-02-24 23:16:29 +0100
committerSzabolcs Nagy <nsz@port70.net>2014-02-24 23:16:29 +0100
commite5bb165bed7be4176914672d25ff8e286b6fba49 (patch)
treed2f682e9425d1277a9e92cc694b2590a0c22eb0c /arch
parentdbed392410e333fde86c14ea17a46d1ad9c760f1 (diff)
downloadmusl-e5bb165bed7be4176914672d25ff8e286b6fba49.tar.gz
mips: add mips-sf subarch support (soft-float)
Userspace emulated floating-point (gcc -msoft-float) is not compatible with the default mips abi (assumes an FPU or in kernel emulation of it). Soft vs hard float abi should not be mixed, __mips_soft_float is checked in musl's configure script and there is no runtime check. The -sf subarch does not save/restore floating-point registers in setjmp/longjmp and only provides dummy fenv implementation.
Diffstat (limited to 'arch')
-rw-r--r--arch/mips/bits/fenv.h5
-rw-r--r--arch/mips/reloc.h8
2 files changed, 12 insertions, 1 deletions
diff --git a/arch/mips/bits/fenv.h b/arch/mips/bits/fenv.h
index b2a6db9a..589e71c1 100644
--- a/arch/mips/bits/fenv.h
+++ b/arch/mips/bits/fenv.h
@@ -1,3 +1,7 @@
+#ifdef __mips_soft_float
+#define FE_ALL_EXCEPT 0
+#define FE_TONEAREST 0
+#else
#define FE_INEXACT 4
#define FE_UNDERFLOW 8
#define FE_OVERFLOW 16
@@ -10,6 +14,7 @@
#define FE_TOWARDZERO 1
#define FE_UPWARD 2
#define FE_DOWNWARD 3
+#endif
typedef unsigned short fexcept_t;
diff --git a/arch/mips/reloc.h b/arch/mips/reloc.h
index 07fa10a7..4ca81257 100644
--- a/arch/mips/reloc.h
+++ b/arch/mips/reloc.h
@@ -8,7 +8,13 @@
#define ENDIAN_SUFFIX ""
#endif
-#define LDSO_ARCH "mips" ENDIAN_SUFFIX
+#ifdef __mips_soft_float
+#define FP_SUFFIX "-sf"
+#else
+#define FP_SUFFIX ""
+#endif
+
+#define LDSO_ARCH "mips" ENDIAN_SUFFIX FP_SUFFIX
#define IS_COPY(x) ((x)==R_MIPS_COPY)
#define IS_PLT(x) 1