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[/] [openrisc/] [trunk/] [gnu-src/] [binutils-2.20.1/] [ld/] [testsuite/] [ld-mips-elf/] [mips16-pic-1.inc] - Blame information for rev 205

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Line No. Rev Author Line
1 205 julius
        # Declare a function called NAME and an __fn_NAME stub for it.
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        # Make the stub use la_TYPE to load the the target address into $2.
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        .macro  stub,name,type
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        .set    nomips16
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        .section .mips16.fn.\name, "ax", @progbits
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        .ent    __fn_\name
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__fn_\name:
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        la_\type \name
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        mfc1    $4,$f12
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        jr      $2
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        nop
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        .end    __fn_\name
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        .set    mips16
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        .text
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        .ent    \name
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\name:
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__fn_local_\name:
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        jr      $31
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        nop
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        .end    \name
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        .endm
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        # Like stub, but ensure NAME is a local symbol.
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        .macro  lstub,name,type
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        stub    \name, \type
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        .equ    local_\name,1
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        .endm
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        # Like stub, but ensure NAME is a hidden symbol.
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        .macro  hstub,name,type
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        .globl  \name
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        .hidden \name
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        stub    \name, \type
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        .endm
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        # Like lstub, but make the MIPS16 function global rather than local.
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        .macro  gstub,name,type
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        .globl  \name
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        stub    \name, \type
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        .endm
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        # Use an absolute sequence to load NAME into a register.
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        .macro  la_noshared,name
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        lui     $2,%hi(\name)
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        addiu   $2,$2,%lo(\name)
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        .endm
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        # Use the normal PIC sequence to load __fn_local_NAME into $2
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        # and emit a dummy relocation against NAME.  This macro is always
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        # used at the start of a function.
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        .macro  la_shared,name
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        .reloc  0,R_MIPS_NONE,\name
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        .cpload $25
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        la      $2,__fn_local_\name
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        .endm
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        # Use TYPE (either LSTUB, HSTUB or GSTUB) to define functions
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        # called a_NAME and b_NAME.  The former uses absolute accesses
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        # and the latter uses PIC accesses.
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        .macro  decl,name,type
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        \type   a_\name, noshared
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        \type   b_\name, shared
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        .endm
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        # Emit the MIPS16 PIC sequence for setting $28 from $25.
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        # Make the value of $25 available in $2 as well.
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        .macro  cpload_mips16
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        li      $2,%hi(_gp_disp)
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        addiu   $3,$pc,%lo(_gp_disp)
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        sll     $2,16
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        addu    $2,$2,$3
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        move    $28,$2
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        .endm
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        # Likewise, but for non-MIPS16 code.
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        .macro  cpload_nomips16
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        .cpload $25
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        move    $2,$28
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        .endm
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        # Start a PIC function in ISA mode MODE, which is either "mips16"
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        # or "nomips16".
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        .macro  pic_prologue,mode
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        cpload_\mode
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        addiu   $sp,$sp,-32
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        sw      $2,16($sp)
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        sw      $31,20($sp)
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        .endm
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        # Use a PIC function to call NAME.
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        .macro  pic_call,name,mode
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        .ifdef  local_\name
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        .ifc    \mode,mips16
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        lw      $2,%got(__fn_local_\name)($2)
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        addiu   $2,%lo(__fn_local_\name)
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        .else
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        lw      $2,%got(\name)($2)
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        addiu   $2,%lo(\name)
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        .endif
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        .else
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        lw      $2,%call16(\name)($2)
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        .endif
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        jalr    $2
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        move    $25,$2
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        lw      $2,16($sp)
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        move    $28,$2
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        .endm
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        # Finish a PIC function started by pic_prologue.
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        .macro  pic_epilogue
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        lw      $2,20($sp)
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        jr      $2
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        addiu   $sp,$sp,32
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        .endm
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        # Use PIC %call16 sequences to call a_NAME and b_NAME.
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        # MODE selects the ISA mode of the code: either "mips16"
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        # or "nomips16".
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        .macro  callpic,name,mode
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        .text
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        .set    \mode
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        .ent    callpic_\name\()_\mode
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callpic_\name\()_\mode:
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        pic_prologue \mode
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        pic_call     a_\name,\mode
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        pic_call     b_\name,\mode
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        pic_epilogue
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        .end    callpic_\name\()_\mode
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        .endm
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        # Use absolute jals to call a_NAME and b_NAME.  MODE selects the
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        # ISA mode of the code: either "mips16" or "nomips16".
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        .macro  jals,name,mode
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        .text
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        .set    \mode
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        .ent    jals_\name\()_\mode
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jals_\name\()_\mode:
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        .option pic0
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        jal     a_\name
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        nop
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        jal     b_\name
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        nop
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        .option pic2
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        .end    jals_\name\()_\mode
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        .endm

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