MIPS: remove MSA macro recursion

Recursive macros made the code more concise & worked great for the
case where the toolchain doesn't support MSA. However, with toolchains
which do support MSA they lead to build failures such as:

  arch/mips/kernel/r4k_switch.S: Assembler messages:
  arch/mips/kernel/r4k_switch.S:148: Error: invalid operands `insert.w $w(0+1)[2],$1'
  arch/mips/kernel/r4k_switch.S:148: Error: invalid operands `insert.w $w(0+1)[3],$1'
  arch/mips/kernel/r4k_switch.S:148: Error: invalid operands `insert.w $w((0+1)+1)[2],$1'
  arch/mips/kernel/r4k_switch.S:148: Error: invalid operands `insert.w $w((0+1)+1)[3],$1'
  ...

Drop the recursion from msa_init_all_upper invoking the msa_init_upper
macro explicitly for each vector register.

Signed-off-by: Paul Burton <paul.burton@imgtec.com>
Cc: linux-mips@linux-mips.org
Patchwork: https://patchwork.linux-mips.org/patch/9162/
Signed-off-by: Ralf Baechle <ralf@linux-mips.org>

diff --git a/arch/mips/include/asm/asmmacro.h b/arch/mips/include/asm/asmmacro.h
index 91df136..73dec5c 100644 (file)
--- a/arch/mips/include/asm/asmmacro.h
+++ b/arch/mips/include/asm/asmmacro.h
@@ -444,9 +444,6 @@
        insert_w \wd, 2
        insert_w \wd, 3
 #endif
-       .if     31-\wd
-       msa_init_upper  (\wd+1)
-       .endif
        .endm
 
        .macro  msa_init_all_upper
@@ -455,6 +452,37 @@
        SET_HARDFLOAT
        not     $1, zero
        msa_init_upper  0
+       msa_init_upper  1
+       msa_init_upper  2
+       msa_init_upper  3
+       msa_init_upper  4
+       msa_init_upper  5
+       msa_init_upper  6
+       msa_init_upper  7
+       msa_init_upper  8
+       msa_init_upper  9
+       msa_init_upper  10
+       msa_init_upper  11
+       msa_init_upper  12
+       msa_init_upper  13
+       msa_init_upper  14
+       msa_init_upper  15
+       msa_init_upper  16
+       msa_init_upper  17
+       msa_init_upper  18
+       msa_init_upper  19
+       msa_init_upper  20
+       msa_init_upper  21
+       msa_init_upper  22
+       msa_init_upper  23
+       msa_init_upper  24
+       msa_init_upper  25
+       msa_init_upper  26
+       msa_init_upper  27
+       msa_init_upper  28
+       msa_init_upper  29
+       msa_init_upper  30
+       msa_init_upper  31
        .set    pop
        .endm