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authorA. Wilcox <AWilcox@Wilcox-Tech.com>2019-08-06 02:50:13 +0000
committerA. Wilcox <AWilcox@Wilcox-Tech.com>2019-08-06 02:50:13 +0000
commitcc5775c62f1f50c485181c16dc5e51677a7ba10e (patch)
tree62f2336e7d460d4f563c5fd14023b46f689ab1ba /system/musl/x87-math.patch
parentfb5625e34a7f55af98024de106ea99ce44b24a0d (diff)
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system/musl: [CVE] x87 FPU state fix
https://www.openwall.com/lists/oss-security/2019/08/06/1
Diffstat (limited to 'system/musl/x87-math.patch')
-rw-r--r--system/musl/x87-math.patch157
1 files changed, 157 insertions, 0 deletions
diff --git a/system/musl/x87-math.patch b/system/musl/x87-math.patch
new file mode 100644
index 000000000..d21be43b3
--- /dev/null
+++ b/system/musl/x87-math.patch
@@ -0,0 +1,157 @@
+diff --git a/src/math/i386/asin.s b/src/math/i386/asin.s
+index a9f691bf..920d967a 100644
+--- a/src/math/i386/asin.s
++++ b/src/math/i386/asin.s
+@@ -7,13 +7,10 @@ asinf:
+ cmp $0x01000000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 2f
+ fld %st(0)
+ fmul %st(1)
+ fstps 4(%esp)
+-2: ret
++ ret
+
+ .global asinl
+ .type asinl,@function
+@@ -30,11 +27,8 @@ asin:
+ cmp $0x00200000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 2f
+ fsts 4(%esp)
+-2: ret
++ ret
+ 1: fld %st(0)
+ fld1
+ fsub %st(0),%st(1)
+diff --git a/src/math/i386/atan.s b/src/math/i386/atan.s
+index d73137b2..a26feae1 100644
+--- a/src/math/i386/atan.s
++++ b/src/math/i386/atan.s
+@@ -10,8 +10,5 @@ atan:
+ fpatan
+ ret
+ # subnormal x, return x with underflow
+-1: fnstsw %ax
+- and $16,%ax
+- jnz 2f
+- fsts 4(%esp)
+-2: ret
++1: fsts 4(%esp)
++ ret
+diff --git a/src/math/i386/atan2.s b/src/math/i386/atan2.s
+index a7d2979b..76b95f31 100644
+--- a/src/math/i386/atan2.s
++++ b/src/math/i386/atan2.s
+@@ -10,8 +10,5 @@ atan2:
+ cmp $0x00200000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 1f
+ fsts 4(%esp)
+ 1: ret
+diff --git a/src/math/i386/atan2f.s b/src/math/i386/atan2f.s
+index 14b88ce5..c9408a90 100644
+--- a/src/math/i386/atan2f.s
++++ b/src/math/i386/atan2f.s
+@@ -10,9 +10,6 @@ atan2f:
+ cmp $0x01000000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 1f
+ fld %st(0)
+ fmul %st(1)
+ fstps 4(%esp)
+diff --git a/src/math/i386/atanf.s b/src/math/i386/atanf.s
+index 8caddefa..893beac5 100644
+--- a/src/math/i386/atanf.s
++++ b/src/math/i386/atanf.s
+@@ -10,10 +10,7 @@ atanf:
+ fpatan
+ ret
+ # subnormal x, return x with underflow
+-1: fnstsw %ax
+- and $16,%ax
+- jnz 2f
+- fld %st(0)
++1: fld %st(0)
+ fmul %st(1)
+ fstps 4(%esp)
+-2: ret
++ ret
+diff --git a/src/math/i386/exp.s b/src/math/i386/exp.s
+index c7aa5b6e..df87c497 100644
+--- a/src/math/i386/exp.s
++++ b/src/math/i386/exp.s
+@@ -7,13 +7,10 @@ expm1f:
+ cmp $0x01000000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 2f
+ fld %st(0)
+ fmul %st(1)
+ fstps 4(%esp)
+-2: ret
++ ret
+
+ .global expm1l
+ .type expm1l,@function
+@@ -30,11 +27,8 @@ expm1:
+ cmp $0x00200000,%eax
+ jae 1f
+ # subnormal x, return x with underflow
+- fnstsw %ax
+- and $16,%ax
+- jnz 2f
+ fsts 4(%esp)
+-2: ret
++ ret
+ 1: fldl2e
+ fmulp
+ mov $0xc2820000,%eax
+diff --git a/src/math/i386/log1p.s b/src/math/i386/log1p.s
+index 6b6929c7..354f391a 100644
+--- a/src/math/i386/log1p.s
++++ b/src/math/i386/log1p.s
+@@ -16,9 +16,6 @@ log1p:
+ fyl2x
+ ret
+ # subnormal x, return x with underflow
+-2: fnstsw %ax
+- and $16,%ax
+- jnz 1f
+- fsts 4(%esp)
++2: fsts 4(%esp)
+ fstp %st(1)
+-1: ret
++ ret
+diff --git a/src/math/i386/log1pf.s b/src/math/i386/log1pf.s
+index c0bcd30f..4d3484cd 100644
+--- a/src/math/i386/log1pf.s
++++ b/src/math/i386/log1pf.s
+@@ -16,10 +16,7 @@ log1pf:
+ fyl2x
+ ret
+ # subnormal x, return x with underflow
+-2: fnstsw %ax
+- and $16,%ax
+- jnz 1f
+- fxch
++2: fxch
+ fmul %st(1)
+ fstps 4(%esp)
+-1: ret
++ ret
+