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Diffstat (limited to 'Modules/_ctypes/libffi/src/mips/o32.S')
| -rw-r--r-- | Modules/_ctypes/libffi/src/mips/o32.S | 381 |
1 files changed, 0 insertions, 381 deletions
diff --git a/Modules/_ctypes/libffi/src/mips/o32.S b/Modules/_ctypes/libffi/src/mips/o32.S deleted file mode 100644 index eb279813a7..0000000000 --- a/Modules/_ctypes/libffi/src/mips/o32.S +++ /dev/null @@ -1,381 +0,0 @@ -/* ----------------------------------------------------------------------- - o32.S - Copyright (c) 1996, 1998, 2005 Red Hat, Inc. - - MIPS Foreign Function Interface - - Permission is hereby granted, free of charge, to any person obtaining - a copy of this software and associated documentation files (the - ``Software''), to deal in the Software without restriction, including - without limitation the rights to use, copy, modify, merge, publish, - distribute, sublicense, and/or sell copies of the Software, and to - permit persons to whom the Software is furnished to do so, subject to - the following conditions: - - The above copyright notice and this permission notice shall be included - in all copies or substantial portions of the Software. - - THE SOFTWARE IS PROVIDED ``AS IS'', WITHOUT WARRANTY OF ANY KIND, - EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF - MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND - NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT - HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, - WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, - OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER - DEALINGS IN THE SOFTWARE. - ----------------------------------------------------------------------- */ - -#define LIBFFI_ASM -#include <fficonfig.h> -#include <ffi.h> - -/* Only build this code if we are compiling for o32 */ - -#if defined(FFI_MIPS_O32) - -#define callback a0 -#define bytes a2 -#define flags a3 - -#define SIZEOF_FRAME (4 * FFI_SIZEOF_ARG + 2 * FFI_SIZEOF_ARG) -#define A3_OFF (SIZEOF_FRAME + 3 * FFI_SIZEOF_ARG) -#define FP_OFF (SIZEOF_FRAME - 2 * FFI_SIZEOF_ARG) -#define RA_OFF (SIZEOF_FRAME - 1 * FFI_SIZEOF_ARG) - - .abicalls - .text - .align 2 - .globl ffi_call_O32 - .ent ffi_call_O32 -ffi_call_O32: -$LFB0: - # Prologue - SUBU $sp, SIZEOF_FRAME # Frame size -$LCFI0: - REG_S $fp, FP_OFF($sp) # Save frame pointer -$LCFI1: - REG_S ra, RA_OFF($sp) # Save return address -$LCFI2: - move $fp, $sp - -$LCFI3: - move t9, callback # callback function pointer - REG_S flags, A3_OFF($fp) # flags - - # Allocate at least 4 words in the argstack - LI v0, 4 * FFI_SIZEOF_ARG - blt bytes, v0, sixteen - - ADDU v0, bytes, 7 # make sure it is aligned - and v0, -8 # to an 8 byte boundry - -sixteen: - SUBU $sp, v0 # move the stack pointer to reflect the - # arg space - - ADDU a0, $sp, 4 * FFI_SIZEOF_ARG - - jalr t9 - - REG_L t0, A3_OFF($fp) # load the flags word - SRL t2, t0, 4 # shift our arg info - and t0, ((1<<4)-1) # mask out the return type - - ADDU $sp, 4 * FFI_SIZEOF_ARG # adjust $sp to new args - - bnez t0, pass_d # make it quick for int - REG_L a0, 0*FFI_SIZEOF_ARG($sp) # just go ahead and load the - REG_L a1, 1*FFI_SIZEOF_ARG($sp) # four regs. - REG_L a2, 2*FFI_SIZEOF_ARG($sp) - REG_L a3, 3*FFI_SIZEOF_ARG($sp) - b call_it - -pass_d: - bne t0, FFI_ARGS_D, pass_f - l.d $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - REG_L a2, 2*FFI_SIZEOF_ARG($sp) # passing a double - REG_L a3, 3*FFI_SIZEOF_ARG($sp) - b call_it - -pass_f: - bne t0, FFI_ARGS_F, pass_d_d - l.s $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - REG_L a1, 1*FFI_SIZEOF_ARG($sp) # passing a float - REG_L a2, 2*FFI_SIZEOF_ARG($sp) - REG_L a3, 3*FFI_SIZEOF_ARG($sp) - b call_it - -pass_d_d: - bne t0, FFI_ARGS_DD, pass_f_f - l.d $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - l.d $f14, 2*FFI_SIZEOF_ARG($sp) # passing two doubles - b call_it - -pass_f_f: - bne t0, FFI_ARGS_FF, pass_d_f - l.s $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - l.s $f14, 1*FFI_SIZEOF_ARG($sp) # passing two floats - REG_L a2, 2*FFI_SIZEOF_ARG($sp) - REG_L a3, 3*FFI_SIZEOF_ARG($sp) - b call_it - -pass_d_f: - bne t0, FFI_ARGS_DF, pass_f_d - l.d $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - l.s $f14, 2*FFI_SIZEOF_ARG($sp) # passing double and float - REG_L a3, 3*FFI_SIZEOF_ARG($sp) - b call_it - -pass_f_d: - # assume that the only other combination must be float then double - # bne t0, FFI_ARGS_F_D, call_it - l.s $f12, 0*FFI_SIZEOF_ARG($sp) # load $fp regs from args - l.d $f14, 2*FFI_SIZEOF_ARG($sp) # passing double and float - -call_it: - # Load the function pointer - REG_L t9, SIZEOF_FRAME + 5*FFI_SIZEOF_ARG($fp) - - # If the return value pointer is NULL, assume no return value. - REG_L t1, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp) - beqz t1, noretval - - bne t2, FFI_TYPE_INT, retlonglong - jalr t9 - REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp) - REG_S v0, 0(t0) - b epilogue - -retlonglong: - # Really any 64-bit int, signed or not. - bne t2, FFI_TYPE_UINT64, retfloat - jalr t9 - REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp) - REG_S v1, 4(t0) - REG_S v0, 0(t0) - b epilogue - -retfloat: - bne t2, FFI_TYPE_FLOAT, retdouble - jalr t9 - REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp) - s.s $f0, 0(t0) - b epilogue - -retdouble: - bne t2, FFI_TYPE_DOUBLE, noretval - jalr t9 - REG_L t0, SIZEOF_FRAME + 4*FFI_SIZEOF_ARG($fp) - s.d $f0, 0(t0) - b epilogue - -noretval: - jalr t9 - - # Epilogue -epilogue: - move $sp, $fp - REG_L $fp, FP_OFF($sp) # Restore frame pointer - REG_L ra, RA_OFF($sp) # Restore return address - ADDU $sp, SIZEOF_FRAME # Fix stack pointer - j ra - -$LFE0: - .end ffi_call_O32 - - -/* ffi_closure_O32. Expects address of the passed-in ffi_closure - in t4 ($12). Stores any arguments passed in registers onto the - stack, then calls ffi_closure_mips_inner_O32, which - then decodes them. - - Stack layout: - - 3 - a3 save - 2 - a2 save - 1 - a1 save - 0 - a0 save, original sp - -1 - ra save - -2 - fp save - -3 - $16 (s0) save - -4 - cprestore - -5 - return value high (v1) - -6 - return value low (v0) - -7 - f14 (le high, be low) - -8 - f14 (le low, be high) - -9 - f12 (le high, be low) - -10 - f12 (le low, be high) - -11 - Called function a3 save - -12 - Called function a2 save - -13 - Called function a1 save - -14 - Called function a0 save, our sp and fp point here - */ - -#define SIZEOF_FRAME2 (14 * FFI_SIZEOF_ARG) -#define A3_OFF2 (SIZEOF_FRAME2 + 3 * FFI_SIZEOF_ARG) -#define A2_OFF2 (SIZEOF_FRAME2 + 2 * FFI_SIZEOF_ARG) -#define A1_OFF2 (SIZEOF_FRAME2 + 1 * FFI_SIZEOF_ARG) -#define A0_OFF2 (SIZEOF_FRAME2 + 0 * FFI_SIZEOF_ARG) -#define RA_OFF2 (SIZEOF_FRAME2 - 1 * FFI_SIZEOF_ARG) -#define FP_OFF2 (SIZEOF_FRAME2 - 2 * FFI_SIZEOF_ARG) -#define S0_OFF2 (SIZEOF_FRAME2 - 3 * FFI_SIZEOF_ARG) -#define GP_OFF2 (SIZEOF_FRAME2 - 4 * FFI_SIZEOF_ARG) -#define V1_OFF2 (SIZEOF_FRAME2 - 5 * FFI_SIZEOF_ARG) -#define V0_OFF2 (SIZEOF_FRAME2 - 6 * FFI_SIZEOF_ARG) -#define FA_1_1_OFF2 (SIZEOF_FRAME2 - 7 * FFI_SIZEOF_ARG) -#define FA_1_0_OFF2 (SIZEOF_FRAME2 - 8 * FFI_SIZEOF_ARG) -#define FA_0_1_OFF2 (SIZEOF_FRAME2 - 9 * FFI_SIZEOF_ARG) -#define FA_0_0_OFF2 (SIZEOF_FRAME2 - 10 * FFI_SIZEOF_ARG) - - .text - .align 2 - .globl ffi_closure_O32 - .ent ffi_closure_O32 -ffi_closure_O32: -$LFB1: - # Prologue - .frame $fp, SIZEOF_FRAME2, ra - .set noreorder - .cpload t9 - .set reorder - SUBU $sp, SIZEOF_FRAME2 - .cprestore GP_OFF2 -$LCFI4: - REG_S $16, S0_OFF2($sp) # Save s0 - REG_S $fp, FP_OFF2($sp) # Save frame pointer - REG_S ra, RA_OFF2($sp) # Save return address -$LCFI6: - move $fp, $sp - -$LCFI7: - # Store all possible argument registers. If there are more than - # four arguments, then they are stored above where we put a3. - REG_S a0, A0_OFF2($fp) - REG_S a1, A1_OFF2($fp) - REG_S a2, A2_OFF2($fp) - REG_S a3, A3_OFF2($fp) - - # Load ABI enum to s0 - REG_L $16, 20($12) # cif pointer follows tramp. - REG_L $16, 0($16) # abi is first member. - - li $13, 1 # FFI_O32 - bne $16, $13, 1f # Skip fp save if FFI_O32_SOFT_FLOAT - - # Store all possible float/double registers. - s.d $f12, FA_0_0_OFF2($fp) - s.d $f14, FA_1_0_OFF2($fp) -1: - # Call ffi_closure_mips_inner_O32 to do the work. - la t9, ffi_closure_mips_inner_O32 - move a0, $12 # Pointer to the ffi_closure - addu a1, $fp, V0_OFF2 - addu a2, $fp, A0_OFF2 - addu a3, $fp, FA_0_0_OFF2 - jalr t9 - - # Load the return value into the appropriate register. - move $8, $2 - li $9, FFI_TYPE_VOID - beq $8, $9, closure_done - - li $13, 1 # FFI_O32 - bne $16, $13, 1f # Skip fp restore if FFI_O32_SOFT_FLOAT - - li $9, FFI_TYPE_FLOAT - l.s $f0, V0_OFF2($fp) - beq $8, $9, closure_done - - li $9, FFI_TYPE_DOUBLE - l.d $f0, V0_OFF2($fp) - beq $8, $9, closure_done -1: - REG_L $3, V1_OFF2($fp) - REG_L $2, V0_OFF2($fp) - -closure_done: - # Epilogue - move $sp, $fp - REG_L $16, S0_OFF2($sp) # Restore s0 - REG_L $fp, FP_OFF2($sp) # Restore frame pointer - REG_L ra, RA_OFF2($sp) # Restore return address - ADDU $sp, SIZEOF_FRAME2 - j ra -$LFE1: - .end ffi_closure_O32 - -/* DWARF-2 unwind info. */ - - .section .eh_frame,"a",@progbits -$Lframe0: - .4byte $LECIE0-$LSCIE0 # Length of Common Information Entry -$LSCIE0: - .4byte 0x0 # CIE Identifier Tag - .byte 0x1 # CIE Version - .ascii "zR\0" # CIE Augmentation - .uleb128 0x1 # CIE Code Alignment Factor - .sleb128 4 # CIE Data Alignment Factor - .byte 0x1f # CIE RA Column - .uleb128 0x1 # Augmentation size - .byte 0x00 # FDE Encoding (absptr) - .byte 0xc # DW_CFA_def_cfa - .uleb128 0x1d - .uleb128 0x0 - .align 2 -$LECIE0: -$LSFDE0: - .4byte $LEFDE0-$LASFDE0 # FDE Length -$LASFDE0: - .4byte $LASFDE0-$Lframe0 # FDE CIE offset - .4byte $LFB0 # FDE initial location - .4byte $LFE0-$LFB0 # FDE address range - .uleb128 0x0 # Augmentation size - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI0-$LFB0 - .byte 0xe # DW_CFA_def_cfa_offset - .uleb128 0x18 - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI2-$LCFI0 - .byte 0x11 # DW_CFA_offset_extended_sf - .uleb128 0x1e # $fp - .sleb128 -2 # SIZEOF_FRAME2 - 2*FFI_SIZEOF_ARG($sp) - .byte 0x11 # DW_CFA_offset_extended_sf - .uleb128 0x1f # $ra - .sleb128 -1 # SIZEOF_FRAME2 - 1*FFI_SIZEOF_ARG($sp) - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI3-$LCFI2 - .byte 0xc # DW_CFA_def_cfa - .uleb128 0x1e - .uleb128 0x18 - .align 2 -$LEFDE0: -$LSFDE1: - .4byte $LEFDE1-$LASFDE1 # FDE Length -$LASFDE1: - .4byte $LASFDE1-$Lframe0 # FDE CIE offset - .4byte $LFB1 # FDE initial location - .4byte $LFE1-$LFB1 # FDE address range - .uleb128 0x0 # Augmentation size - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI4-$LFB1 - .byte 0xe # DW_CFA_def_cfa_offset - .uleb128 0x38 - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI6-$LCFI4 - .byte 0x11 # DW_CFA_offset_extended_sf - .uleb128 0x10 # $16 - .sleb128 -3 # SIZEOF_FRAME2 - 3*FFI_SIZEOF_ARG($sp) - .byte 0x11 # DW_CFA_offset_extended_sf - .uleb128 0x1e # $fp - .sleb128 -2 # SIZEOF_FRAME2 - 2*FFI_SIZEOF_ARG($sp) - .byte 0x11 # DW_CFA_offset_extended_sf - .uleb128 0x1f # $ra - .sleb128 -1 # SIZEOF_FRAME2 - 1*FFI_SIZEOF_ARG($sp) - .byte 0x4 # DW_CFA_advance_loc4 - .4byte $LCFI7-$LCFI6 - .byte 0xc # DW_CFA_def_cfa - .uleb128 0x1e - .uleb128 0x38 - .align 2 -$LEFDE1: - -#endif |