arch/m68k-amiga/doc/gcc-4.5.1-amiga-elf.patch

   1 commit f68b80717efec2ccf4c181c9a3fc4184fde27be1
   2 Author: Jason S. McMullan <jason.mcmullan@netronome.com>
   3 Date:   Sun Oct 10 00:38:26 2010 -0400
   4
   5     [m68k-amiga] Amiga ABI support
   6
   7     Moves the FP to A5, doubling up with the PIC
   8     Breaks all -fpic modes.
   9
  10     NOT FOR UPSTREAM: This breaks *all* other m68k APIs!!!
  11
  12     Signed-off-by: Jason S. McMullan <jason.mcmullan@netronome.com>
  13
  14 diff --git a/gcc/config/m68k/m68k.c b/gcc/config/m68k/m68k.c
  15 index c22f3b8..9718ccb 100644
  16 --- a/gcc/config/m68k/m68k.c
  17 +++ b/gcc/config/m68k/m68k.c
  18 @@ -920,7 +920,7 @@ m68k_initial_elimination_offset (int from, int to)
  19  static bool
  20  m68k_save_reg (unsigned int regno, bool interrupt_handler)
  21  {
  22 -  if (flag_pic && regno == PIC_REG)
  23 +  if (flag_pic && regno == A5_REG)
  24      {
  25        if (crtl->saves_all_registers)
  26         return true;
  27 @@ -2186,7 +2186,7 @@ static rtx
  28  m68k_get_gp (void)
  29  {
  30    if (pic_offset_table_rtx == NULL_RTX)
  31 -    pic_offset_table_rtx = gen_rtx_REG (Pmode, PIC_REG);
  32 +    pic_offset_table_rtx = gen_rtx_REG (Pmode, A5_REG);
  33
  34    crtl->uses_pic_offset_table = 1;
  35
  36 @@ -4640,7 +4640,7 @@ m68k_delegitimize_address (rtx orig_x)
  37    if (GET_CODE (x) == PLUS
  38        && GET_CODE (XEXP (x, 1)) == CONST
  39        && REG_P (XEXP (x, 0))
  40 -      && REGNO (XEXP (x, 0)) == PIC_REG)
  41 +      && REGNO (XEXP (x, 0)) == A5_REG)
  42      {
  43        y = x = XEXP (XEXP (x, 1), 0);
  44
  45 @@ -5145,7 +5145,7 @@ m68k_output_mi_thunk (FILE *file, tree thunk ATTRIBUTE_UNUSED,
  46
  47    /* Restore the original PIC register.  */
  48    if (flag_pic)
  49 -    SET_REGNO (pic_offset_table_rtx, PIC_REG);
  50 +    SET_REGNO (pic_offset_table_rtx, A5_REG);
  51  }
  52
  53  /* Worker function for TARGET_STRUCT_VALUE_RTX.  */
  54 diff --git a/gcc/config/m68k/m68k.h b/gcc/config/m68k/m68k.h
  55 index 5787e8a..1d36a63 100644
  56 --- a/gcc/config/m68k/m68k.h
  57 +++ b/gcc/config/m68k/m68k.h
  58 @@ -348,7 +348,7 @@ along with GCC; see the file COPYING3.  If not see
  59  #define PIC_OFFSET_TABLE_REGNUM                                \
  60    (!flag_pic ? INVALID_REGNUM                          \
  61     : reload_completed ? REGNO (pic_offset_table_rtx)   \
  62 -   : PIC_REG)
  63 +   : A5_REG)
  64
  65  /* 1 for registers that have pervasive standard uses
  66     and are not available for the register allocator.
  67 @@ -416,7 +416,7 @@ along with GCC; see the file COPYING3.  If not see
  68           fixed_regs[i] = call_used_regs[i] = 1;                \
  69      }                                                          \
  70    if (flag_pic)                                                        \
  71 -    fixed_regs[PIC_REG] = call_used_regs[PIC_REG] = 1;         \
  72 +    fixed_regs[A5_REG] = call_used_regs[A5_REG] = 1;           \
  73  }
  74
  75  /* On the m68k, ordinary registers hold 32 bits worth;
  76 @@ -453,7 +453,7 @@ along with GCC; see the file COPYING3.  If not see
  77  /* Most m68k targets use %a6 as a frame pointer.  The AmigaOS
  78     ABI uses %a6 for shared library calls, therefore the frame
  79     pointer is shifted to %a5 on this target.  */
  80 -#define FRAME_POINTER_REGNUM A6_REG
  81 +#define FRAME_POINTER_REGNUM A5_REG
  82
  83  /* Base register for access to arguments of the function.
  84   * This isn't a hardware register. It will be eliminated to the
  85 diff --git a/gcc/config/m68k/m68k.md b/gcc/config/m68k/m68k.md
  86 index f89037f..9f3da5a 100644
  87 --- a/gcc/config/m68k/m68k.md
  88 +++ b/gcc/config/m68k/m68k.md
  89 @@ -131,7 +131,7 @@
  90    [(D0_REG             0)
  91     (A0_REG             8)
  92     (A1_REG             9)
  93 -   (PIC_REG            13)
  94 +   (A5_REG             13)
  95     (A6_REG             14)
  96     (SP_REG             15)
  97     (FP0_REG            16)
  98 @@ -7295,7 +7295,7 @@
  99  {
 100    if (TARGET_ID_SHARED_LIBRARY)
 101      {
 102 -      operands[1] = gen_rtx_REG (Pmode, PIC_REG);
 103 +      operands[1] = gen_rtx_REG (Pmode, A5_REG);
 104        return MOTOROLA ? "move.l %?(%1),%0" : "movel %1@(%?), %0";
 105      }
 106    else if (MOTOROLA)