toolchain/gcc/patches/5.5.0/931-fix-MIPS-softfloat-build-issue.patch

   1 From 2b46f9187b6f994fc450628a7cd97fc703dd23e0 Mon Sep 17 00:00:00 2001
   2 From: BangLang Huang <banglang.huang@foxmail.com>
   3 Date: Wed, 9 Nov 2016 10:36:49 +0800
   4 Subject: [PATCH] fix MIPS softfloat build issue
   5
   6     This patch is backport from github/libffi #272
   7
   8 Signed-off-by: BangLang Huang <banglang.huang@foxmail.com>
   9 ---
  10  libffi/src/mips/n32.S | 17 +++++++++++++++++
  11  libffi/src/mips/o32.S | 17 +++++++++++++++++
  12  2 files changed, 34 insertions(+)
  13
  14 --- a/libffi/src/mips/n32.S
  15 +++ b/libffi/src/mips/n32.S
  16 @@ -107,6 +107,16 @@ loadregs:
  17
  18         REG_L   t6, 3*FFI_SIZEOF_ARG($fp)  # load the flags word into t6.
  19
  20 +#ifdef __mips_soft_float
  21 +       REG_L   a0, 0*FFI_SIZEOF_ARG(t9)
  22 +       REG_L   a1, 1*FFI_SIZEOF_ARG(t9)
  23 +       REG_L   a2, 2*FFI_SIZEOF_ARG(t9)
  24 +       REG_L   a3, 3*FFI_SIZEOF_ARG(t9)
  25 +       REG_L   a4, 4*FFI_SIZEOF_ARG(t9)
  26 +       REG_L   a5, 5*FFI_SIZEOF_ARG(t9)
  27 +       REG_L   a6, 6*FFI_SIZEOF_ARG(t9)
  28 +       REG_L   a7, 7*FFI_SIZEOF_ARG(t9)
  29 +#else
  30         and     t4, t6, ((1<<FFI_FLAG_BITS)-1)
  31         REG_L   a0, 0*FFI_SIZEOF_ARG(t9)
  32         beqz    t4, arg1_next
  33 @@ -193,6 +203,7 @@ arg7_next:
  34  arg8_doublep:
  35         l.d     $f19, 7*FFI_SIZEOF_ARG(t9)
  36  arg8_next:
  37 +#endif
  38
  39  callit:
  40         # Load the function pointer
  41 @@ -214,6 +225,7 @@ retint:
  42         b       epilogue
  43
  44  retfloat:
  45 +#ifndef __mips_soft_float
  46         bne     t6, FFI_TYPE_FLOAT, retdouble
  47         jal     t9
  48         REG_L   t4, 4*FFI_SIZEOF_ARG($fp)
  49 @@ -272,6 +284,7 @@ retstruct_f_d:
  50         s.s     $f0, 0(t4)
  51         s.d     $f2, 8(t4)
  52         b       epilogue
  53 +#endif
  54
  55  retstruct_d_soft:
  56         bne     t6, FFI_TYPE_STRUCT_D_SOFT, retstruct_f_soft
  57 @@ -429,6 +442,7 @@ ffi_closure_N32:
  58         REG_S   a6, A6_OFF2($sp)
  59         REG_S   a7, A7_OFF2($sp)
  60
  61 +#ifndef __mips_soft_float
  62         # Store all possible float/double registers.
  63         s.d     $f12, F12_OFF2($sp)
  64         s.d     $f13, F13_OFF2($sp)
  65 @@ -438,6 +452,7 @@ ffi_closure_N32:
  66         s.d     $f17, F17_OFF2($sp)
  67         s.d     $f18, F18_OFF2($sp)
  68         s.d     $f19, F19_OFF2($sp)
  69 +#endif
  70
  71         # Call ffi_closure_mips_inner_N32 to do the real work.
  72         LA      t9, ffi_closure_mips_inner_N32
  73 @@ -458,6 +473,7 @@ cls_retint:
  74         b       cls_epilogue
  75
  76  cls_retfloat:
  77 +#ifndef __mips_soft_float
  78         bne     v0, FFI_TYPE_FLOAT, cls_retdouble
  79         l.s     $f0, V0_OFF2($sp)
  80         b       cls_epilogue
  81 @@ -500,6 +516,7 @@ cls_retstruct_f_d:
  82         l.s     $f0, V0_OFF2($sp)
  83         l.d     $f2, V1_OFF2($sp)
  84         b       cls_epilogue
  85 +#endif
  86
  87  cls_retstruct_small2:
  88         REG_L   v0, V0_OFF2($sp)
  89 --- a/libffi/src/mips/o32.S
  90 +++ b/libffi/src/mips/o32.S
  91 @@ -82,13 +82,16 @@ sixteen:
  92
  93         ADDU    $sp, 4 * FFI_SIZEOF_ARG         # adjust $sp to new args
  94
  95 +#ifndef __mips_soft_float
  96         bnez    t0, pass_d                      # make it quick for int
  97 +#endif
  98         REG_L   a0, 0*FFI_SIZEOF_ARG($sp)       # just go ahead and load the
  99         REG_L   a1, 1*FFI_SIZEOF_ARG($sp)       # four regs.
 100         REG_L   a2, 2*FFI_SIZEOF_ARG($sp)
 101         REG_L   a3, 3*FFI_SIZEOF_ARG($sp)
 102         b       call_it
 103
 104 +#ifndef __mips_soft_float
 105  pass_d:
 106         bne     t0, FFI_ARGS_D, pass_f
 107         l.d     $f12, 0*FFI_SIZEOF_ARG($sp)     # load $fp regs from args
 108 @@ -130,6 +133,7 @@ pass_f_d:
 109   #     bne     t0, FFI_ARGS_F_D, call_it
 110         l.s     $f12, 0*FFI_SIZEOF_ARG($sp)     # load $fp regs from args
 111         l.d     $f14, 2*FFI_SIZEOF_ARG($sp)     # passing double and float
 112 +#endif
 113
 114  call_it:
 115         # Load the function pointer
 116 @@ -158,14 +162,23 @@ retfloat:
 117         bne     t2, FFI_TYPE_FLOAT, retdouble
 118         jalr    t9
 119         REG_L   t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
 120 +#ifndef __mips_soft_float
 121         s.s     $f0, 0(t0)
 122 +#else
 123 +       REG_S v0, 0(t0)
 124 +#endif
 125         b       epilogue
 126
 127  retdouble:
 128         bne     t2, FFI_TYPE_DOUBLE, noretval
 129         jalr    t9
 130         REG_L   t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp)
 131 +#ifndef __mips_soft_float
 132         s.d     $f0, 0(t0)
 133 +#else
 134 +       REG_S v1, 4(t0)
 135 +       REG_S v0, 0(t0)
 136 +#endif
 137         b       epilogue
 138
 139  noretval:
 140 @@ -261,9 +274,11 @@ $LCFI7:
 141         li      $13, 1          # FFI_O32
 142         bne     $16, $13, 1f    # Skip fp save if FFI_O32_SOFT_FLOAT
 143
 144 +#ifndef __mips_soft_float
 145         # Store all possible float/double registers.
 146         s.d     $f12, FA_0_0_OFF2($fp)
 147         s.d     $f14, FA_1_0_OFF2($fp)
 148 +#endif
 149  1:
 150         # Call ffi_closure_mips_inner_O32 to do the work.
 151         la      t9, ffi_closure_mips_inner_O32
 152 @@ -281,6 +296,7 @@ $LCFI7:
 153         li      $13, 1          # FFI_O32
 154         bne     $16, $13, 1f    # Skip fp restore if FFI_O32_SOFT_FLOAT
 155
 156 +#ifndef __mips_soft_float
 157         li      $9, FFI_TYPE_FLOAT
 158         l.s     $f0, V0_OFF2($fp)
 159         beq     $8, $9, closure_done
 160 @@ -288,6 +304,7 @@ $LCFI7:
 161         li      $9, FFI_TYPE_DOUBLE
 162         l.d     $f0, V0_OFF2($fp)
 163         beq     $8, $9, closure_done
 164 +#endif
 165  1:
 166         REG_L   $3, V1_OFF2($fp)
 167         REG_L   $2, V0_OFF2($fp)