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networking: cc is not a register

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gcc accepts

  __asm__ ( "" : : : "%cc");

but cc is not a real register and clang does not like it.

networking/tls_pstm_montgomery_reduce.c:385:4: error: unknown register name '%cc' in asm
|                         INNERMUL;
|                         ^

The % syntax nominally goes before a register, in this case cc,
like "memory" isn't a true register it's just a way of specifying that
the condition code registers for the target are clobbered

Signed-off-by: Khem Raj <raj.khem@gmail.com>
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Khem Raj
2019-03-06 21:06:10 -08:00
committed by Denys Vlasenko
parent 4ebcdf7396
commit ee9e5f92b6
3 changed files with 19 additions and 19 deletions
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12
networking/tls_pstm_montgomery_reduce.c
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@@ -73,7 +73,7 @@ asm( \
"movl %%edx,%1 \n\t" \
:"=g"(_c[LO]), "=r"(cy) \
:"0"(_c[LO]), "1"(cy), "g"(mu), "g"(*tmpm++) \
: "%eax", "%edx", "%cc")
: "%eax", "%edx", "cc")
#define PROPCARRY \
asm( \
@@ -82,7 +82,7 @@ asm( \
"movzbl %%al,%1 \n\t" \
:"=g"(_c[LO]), "=r"(cy) \
:"0"(_c[LO]), "1"(cy) \
: "%eax", "%cc")
: "%eax", "cc")
/******************************************************************************/
#elif defined(PSTM_X86_64)
@@ -235,7 +235,7 @@ asm( \
" STR r0,%1 \n\t" \
:"=r"(cy),"=m"(_c[0])\
:"0"(cy),"r"(mu),"r"(*tmpm++),"m"(_c[0])\
:"r0","%cc");
:"r0","cc");
#define PROPCARRY \
asm( \
" LDR r0,%1 \n\t" \
@@ -246,7 +246,7 @@ asm( \
" MOVCC %0,#0 \n\t" \
:"=r"(cy),"=m"(_c[0])\
:"0"(cy),"m"(_c[0])\
:"r0","%cc");
:"r0","cc");
#else /* Non-Thumb2 code */
//#pragma message ("Using 32 bit ARM Assembly Optimizations")
#define INNERMUL \
@@ -259,7 +259,7 @@ asm( \
" STR r0,%1 \n\t" \
:"=r"(cy),"=m"(_c[0])\
:"0"(cy),"r"(mu),"r"(*tmpm++),"m"(_c[0])\
:"r0","%cc");
:"r0","cc");
#define PROPCARRY \
asm( \
" LDR r0,%1 \n\t" \
@@ -269,7 +269,7 @@ asm( \
" MOVCC %0,#0 \n\t" \
:"=r"(cy),"=m"(_c[0])\
:"0"(cy),"m"(_c[0])\
:"r0","%cc");
:"r0","cc");
#endif /* __thumb2__ */