提交 347b0cf0 编写于 作者: S Sam Ravnborg 提交者: David S. Miller

sparc32: remove cast from output constraints in math asm statements

The following asm statements generated a sparse warning:

        asm("addcc \n\t" : "=r" (((USItype)(r2)))

warning: asm output is not an lvalue

When asking on the sparse mailing list Linus replyed:

"
Those casts to (USItype) are all pointless to begin with (since the
values are of that type already!) and they mean that the expression
isn't something you can assign to (lvalue).
"

In the math emulation code drop all casts in the output
parts of the asm statements.

This fixes a lot of "warning: asm output is not an lvalue" sparse
warnings in math_32.c.
Signed-off-by: NSam Ravnborg <sam@ravnborg.org>
Signed-off-by: NDavid S. Miller <davem@davemloft.net>
上级 958b7b07
master alk-4.19.24 alk-4.19.30 alk-4.19.34 alk-4.19.36 alk-4.19.43 alk-4.19.48 alk-4.19.57 ck-4.19.67 ck-4.19.81 ck-4.19.91 github/fork/deepanshu1422/fix-typo-in-comment github/fork/haosdent/fix-typo linux-next v4.19.91 v4.19.90 v4.19.89 v4.19.88 v4.19.87 v4.19.86 v4.19.85 v4.19.84 v4.19.83 v4.19.82 v4.19.81 v4.19.80 v4.19.79 v4.19.78 v4.19.77 v4.19.76 v4.19.75 v4.19.74 v4.19.73 v4.19.72 v4.19.71 v4.19.70 v4.19.69 v4.19.68 v4.19.67 v4.19.66 v4.19.65 v4.19.64 v4.19.63 v4.19.62 v4.19.61 v4.19.60 v4.19.59 v4.19.58 v4.19.57 v4.19.56 v4.19.55 v4.19.54 v4.19.53 v4.19.52 v4.19.51 v4.19.50 v4.19.49 v4.19.48 v4.19.47 v4.19.46 v4.19.45 v4.19.44 v4.19.43 v4.19.42 v4.19.41 v4.19.40 v4.19.39 v4.19.38 v4.19.37 v4.19.36 v4.19.35 v4.19.34 v4.19.33 v4.19.32 v4.19.31 v4.19.30 v4.19.29 v4.19.28 v4.19.27 v4.19.26 v4.19.25 v4.19.24 v4.19.23 v4.19.22 v4.19.21 v4.19.20 v4.19.19 v4.19.18 v4.19.17 v4.19.16 v4.19.15 v4.19.14 v4.19.13 v4.19.12 v4.19.11 v4.19.10 v4.19.9 v4.19.8 v4.19.7 v4.19.6 v4.19.5 v4.19.4 v4.19.3 v4.19.2 v4.19.1 v4.19 v4.19-rc8 v4.19-rc7 v4.19-rc6 v4.19-rc5 v4.19-rc4 v4.19-rc3 v4.19-rc2 v4.19-rc1 ck-release-21 ck-release-20 ck-release-19.2 ck-release-19.1 ck-release-19 ck-release-18 ck-release-17.2 ck-release-17.1 ck-release-17 ck-release-16 ck-release-15.1 ck-release-15 ck-release-14 ck-release-13.2 ck-release-13 ck-release-12 ck-release-11 ck-release-10 ck-release-9 ck-release-7 alk-release-15 alk-release-14 alk-release-13.2 alk-release-13 alk-release-12 alk-release-11 alk-release-10 alk-release-9 alk-release-7
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......@@ -79,9 +79,9 @@
__asm__ ("addcc %r7,%8,%2\n\t" \
"addxcc %r5,%6,%1\n\t" \
"addx %r3,%4,%0\n" \
: "=r" ((USItype)(r2)), \
"=&r" ((USItype)(r1)), \
"=&r" ((USItype)(r0)) \
: "=r" (r2), \
"=&r" (r1), \
"=&r" (r0) \
: "%rJ" ((USItype)(x2)), \
"rI" ((USItype)(y2)), \
"%rJ" ((USItype)(x1)), \
......@@ -94,9 +94,9 @@
__asm__ ("subcc %r7,%8,%2\n\t" \
"subxcc %r5,%6,%1\n\t" \
"subx %r3,%4,%0\n" \
: "=r" ((USItype)(r2)), \
"=&r" ((USItype)(r1)), \
"=&r" ((USItype)(r0)) \
: "=r" (r2), \
"=&r" (r1), \
"=&r" (r0) \
: "%rJ" ((USItype)(x2)), \
"rI" ((USItype)(y2)), \
"%rJ" ((USItype)(x1)), \
......@@ -115,8 +115,8 @@
"addxcc %r6,%7,%0\n\t" \
"addxcc %r4,%5,%%g2\n\t" \
"addx %r2,%3,%%g1\n\t" \
: "=&r" ((USItype)(r1)), \
"=&r" ((USItype)(r0)) \
: "=&r" (r1), \
"=&r" (r0) \
: "%rJ" ((USItype)(x3)), \
"rI" ((USItype)(y3)), \
"%rJ" ((USItype)(x2)), \
......@@ -140,8 +140,8 @@
"subxcc %r6,%7,%0\n\t" \
"subxcc %r4,%5,%%g2\n\t" \
"subx %r2,%3,%%g1\n\t" \
: "=&r" ((USItype)(r1)), \
"=&r" ((USItype)(r0)) \
: "=&r" (r1), \
"=&r" (r0) \
: "%rJ" ((USItype)(x3)), \
"rI" ((USItype)(y3)), \
"%rJ" ((USItype)(x2)), \
......@@ -164,10 +164,10 @@
"addxcc %2,%%g0,%2\n\t" \
"addxcc %1,%%g0,%1\n\t" \
"addx %0,%%g0,%0\n\t" \
: "=&r" ((USItype)(x3)), \
"=&r" ((USItype)(x2)), \
"=&r" ((USItype)(x1)), \
"=&r" ((USItype)(x0)) \
: "=&r" (x3), \
"=&r" (x2), \
"=&r" (x1), \
"=&r" (x0) \
: "rI" ((USItype)(i)), \
"0" ((USItype)(x3)), \
"1" ((USItype)(x2)), \
......
......@@ -4,20 +4,20 @@
#include <asm/byteorder.h>
#define add_ssaaaa(sh, sl, ah, al, bh, bl) \
__asm__ ("addcc %r4,%5,%1\n\t" \
__asm__ ("addcc %r4,%5,%1\n\t" \
"addx %r2,%3,%0\n" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "=r" (sh), \
"=&r" (sl) \
: "%rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"%rJ" ((USItype)(al)), \
"rI" ((USItype)(bl)) \
: "cc")
#define sub_ddmmss(sh, sl, ah, al, bh, bl) \
__asm__ ("subcc %r4,%5,%1\n\t" \
__asm__ ("subcc %r4,%5,%1\n\t" \
"subx %r2,%3,%0\n" \
: "=r" ((USItype)(sh)), \
"=&r" ((USItype)(sl)) \
: "=r" (sh), \
"=&r" (sl) \
: "rJ" ((USItype)(ah)), \
"rI" ((USItype)(bh)), \
"rJ" ((USItype)(al)), \
......@@ -65,8 +65,8 @@
"mulscc %%g1,0,%%g1\n\t" \
"add %%g1,%%g2,%0\n\t" \
"rd %%y,%1\n" \
: "=r" ((USItype)(w1)), \
"=r" ((USItype)(w0)) \
: "=r" (w1), \
"=r" (w0) \
: "%rI" ((USItype)(u)), \
"r" ((USItype)(v)) \
: "%g1", "%g2", "cc")
......@@ -98,8 +98,8 @@
"sub %1,%2,%1\n\t" \
"3: xnor %0,0,%0\n\t" \
"! End of inline udiv_qrnnd\n" \
: "=&r" ((USItype)(q)), \
"=&r" ((USItype)(r)) \
: "=&r" (q), \
"=&r" (r) \
: "r" ((USItype)(d)), \
"1" ((USItype)(n1)), \
"0" ((USItype)(n0)) : "%g1", "cc")
......
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