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Diffstat (limited to 'Modules/_ctypes/libffi/src/tile/tile.S')
| -rw-r--r-- | Modules/_ctypes/libffi/src/tile/tile.S | 360 |
1 files changed, 0 insertions, 360 deletions
diff --git a/Modules/_ctypes/libffi/src/tile/tile.S b/Modules/_ctypes/libffi/src/tile/tile.S deleted file mode 100644 index d1f82cb3db..0000000000 --- a/Modules/_ctypes/libffi/src/tile/tile.S +++ /dev/null @@ -1,360 +0,0 @@ -/* ----------------------------------------------------------------------- - tile.S - Copyright (c) 2011 Tilera Corp. - - Tilera TILEPro and TILE-Gx 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> - -/* Number of bytes in a register. */ -#define REG_SIZE FFI_SIZEOF_ARG - -/* Number of bytes in stack linkage area for backtracing. - - A note about the ABI: on entry to a procedure, sp points to a stack - slot where it must spill the return address if it's not a leaf. - REG_SIZE bytes beyond that is a slot owned by the caller which - contains the sp value that the caller had when it was originally - entered (i.e. the caller's frame pointer). */ -#define LINKAGE_SIZE (2 * REG_SIZE) - -/* The first 10 registers are used to pass arguments and return values. */ -#define NUM_ARG_REGS 10 - -#ifdef __tilegx__ -#define SW st -#define LW ld -#define BGZT bgtzt -#else -#define SW sw -#define LW lw -#define BGZT bgzt -#endif - - -/* void ffi_call_tile (int_reg_t reg_args[NUM_ARG_REGS], - const int_reg_t *stack_args, - unsigned long stack_args_bytes, - void (*fnaddr)(void)); - - On entry, REG_ARGS contain the outgoing register values, - and STACK_ARGS contains STACK_ARG_BYTES of additional values - to be passed on the stack. If STACK_ARG_BYTES is zero, then - STACK_ARGS is ignored. - - When the invoked function returns, the values of r0-r9 are - blindly stored back into REG_ARGS for the caller to examine. */ - - .section .text.ffi_call_tile, "ax", @progbits - .align 8 - .globl ffi_call_tile - FFI_HIDDEN(ffi_call_tile) -ffi_call_tile: - -/* Incoming arguments. */ -#define REG_ARGS r0 -#define INCOMING_STACK_ARGS r1 -#define STACK_ARG_BYTES r2 -#define ORIG_FNADDR r3 - -/* Temporary values. */ -#define FRAME_SIZE r10 -#define TMP r11 -#define TMP2 r12 -#define OUTGOING_STACK_ARGS r13 -#define REG_ADDR_PTR r14 -#define RETURN_REG_ADDR r15 -#define FNADDR r16 - - .cfi_startproc - { - /* Save return address. */ - SW sp, lr - .cfi_offset lr, 0 - /* Prepare to spill incoming r52. */ - addi TMP, sp, -REG_SIZE - /* Increase frame size to have room to spill r52 and REG_ARGS. - The +7 is to round up mod 8. */ - addi FRAME_SIZE, STACK_ARG_BYTES, \ - REG_SIZE + REG_SIZE + LINKAGE_SIZE + 7 - } - { - /* Round stack frame size to a multiple of 8 to satisfy ABI. */ - andi FRAME_SIZE, FRAME_SIZE, -8 - /* Compute where to spill REG_ARGS value. */ - addi TMP2, sp, -(REG_SIZE * 2) - } - { - /* Spill incoming r52. */ - SW TMP, r52 - .cfi_offset r52, -REG_SIZE - /* Set up our frame pointer. */ - move r52, sp - .cfi_def_cfa_register r52 - /* Push stack frame. */ - sub sp, sp, FRAME_SIZE - } - { - /* Prepare to set up stack linkage. */ - addi TMP, sp, REG_SIZE - /* Prepare to memcpy stack args. */ - addi OUTGOING_STACK_ARGS, sp, LINKAGE_SIZE - /* Save REG_ARGS which we will need after we call the subroutine. */ - SW TMP2, REG_ARGS - } - { - /* Set up linkage info to hold incoming stack pointer. */ - SW TMP, r52 - } - { - /* Skip stack args memcpy if we don't have any stack args (common). */ - blezt STACK_ARG_BYTES, .Ldone_stack_args_memcpy - } - -.Lmemcpy_stack_args: - { - /* Load incoming argument from stack_args. */ - LW TMP, INCOMING_STACK_ARGS - addi INCOMING_STACK_ARGS, INCOMING_STACK_ARGS, REG_SIZE - } - { - /* Store stack argument into outgoing stack argument area. */ - SW OUTGOING_STACK_ARGS, TMP - addi OUTGOING_STACK_ARGS, OUTGOING_STACK_ARGS, REG_SIZE - addi STACK_ARG_BYTES, STACK_ARG_BYTES, -REG_SIZE - } - { - BGZT STACK_ARG_BYTES, .Lmemcpy_stack_args - } -.Ldone_stack_args_memcpy: - - { - /* Copy aside ORIG_FNADDR so we can overwrite its register. */ - move FNADDR, ORIG_FNADDR - /* Prepare to load argument registers. */ - addi REG_ADDR_PTR, r0, REG_SIZE - /* Load outgoing r0. */ - LW r0, r0 - } - - /* Load up argument registers from the REG_ARGS array. */ -#define LOAD_REG(REG, PTR) \ - { \ - LW REG, PTR ; \ - addi PTR, PTR, REG_SIZE \ - } - - LOAD_REG(r1, REG_ADDR_PTR) - LOAD_REG(r2, REG_ADDR_PTR) - LOAD_REG(r3, REG_ADDR_PTR) - LOAD_REG(r4, REG_ADDR_PTR) - LOAD_REG(r5, REG_ADDR_PTR) - LOAD_REG(r6, REG_ADDR_PTR) - LOAD_REG(r7, REG_ADDR_PTR) - LOAD_REG(r8, REG_ADDR_PTR) - LOAD_REG(r9, REG_ADDR_PTR) - - { - /* Call the subroutine. */ - jalr FNADDR - } - - { - /* Restore original lr. */ - LW lr, r52 - /* Prepare to recover ARGS, which we spilled earlier. */ - addi TMP, r52, -(2 * REG_SIZE) - } - { - /* Restore ARGS, so we can fill it in with the return regs r0-r9. */ - LW RETURN_REG_ADDR, TMP - /* Prepare to restore original r52. */ - addi TMP, r52, -REG_SIZE - } - - { - /* Pop stack frame. */ - move sp, r52 - /* Restore original r52. */ - LW r52, TMP - } - -#define STORE_REG(REG, PTR) \ - { \ - SW PTR, REG ; \ - addi PTR, PTR, REG_SIZE \ - } - - /* Return all register values by reference. */ - STORE_REG(r0, RETURN_REG_ADDR) - STORE_REG(r1, RETURN_REG_ADDR) - STORE_REG(r2, RETURN_REG_ADDR) - STORE_REG(r3, RETURN_REG_ADDR) - STORE_REG(r4, RETURN_REG_ADDR) - STORE_REG(r5, RETURN_REG_ADDR) - STORE_REG(r6, RETURN_REG_ADDR) - STORE_REG(r7, RETURN_REG_ADDR) - STORE_REG(r8, RETURN_REG_ADDR) - STORE_REG(r9, RETURN_REG_ADDR) - - { - jrp lr - } - - .cfi_endproc - .size ffi_call_tile, .-ffi_call_tile - -/* ffi_closure_tile(...) - - On entry, lr points to the closure plus 8 bytes, and r10 - contains the actual return address. - - This function simply dumps all register parameters into a stack array - and passes the closure, the registers array, and the stack arguments - to C code that does all of the actual closure processing. */ - - .section .text.ffi_closure_tile, "ax", @progbits - .align 8 - .globl ffi_closure_tile - FFI_HIDDEN(ffi_closure_tile) - - .cfi_startproc -/* Room to spill all NUM_ARG_REGS incoming registers, plus frame linkage. */ -#define CLOSURE_FRAME_SIZE (((NUM_ARG_REGS * REG_SIZE * 2 + LINKAGE_SIZE) + 7) & -8) -ffi_closure_tile: - { -#ifdef __tilegx__ - st sp, lr - .cfi_offset lr, 0 -#else - /* Save return address (in r10 due to closure stub wrapper). */ - SW sp, r10 - .cfi_return_column r10 - .cfi_offset r10, 0 -#endif - /* Compute address for stack frame linkage. */ - addli r10, sp, -(CLOSURE_FRAME_SIZE - REG_SIZE) - } - { - /* Save incoming stack pointer in linkage area. */ - SW r10, sp - .cfi_offset sp, -(CLOSURE_FRAME_SIZE - REG_SIZE) - /* Push a new stack frame. */ - addli sp, sp, -CLOSURE_FRAME_SIZE - .cfi_adjust_cfa_offset CLOSURE_FRAME_SIZE - } - - { - /* Create pointer to where to start spilling registers. */ - addi r10, sp, LINKAGE_SIZE - } - - /* Spill all the incoming registers. */ - STORE_REG(r0, r10) - STORE_REG(r1, r10) - STORE_REG(r2, r10) - STORE_REG(r3, r10) - STORE_REG(r4, r10) - STORE_REG(r5, r10) - STORE_REG(r6, r10) - STORE_REG(r7, r10) - STORE_REG(r8, r10) - { - /* Save r9. */ - SW r10, r9 -#ifdef __tilegx__ - /* Pointer to closure is passed in r11. */ - move r0, r11 -#else - /* Compute pointer to the closure object. Because the closure - starts with a "jal ffi_closure_tile", we can just take the - value of lr (a phony return address pointing into the closure) - and subtract 8. */ - addi r0, lr, -8 -#endif - /* Compute a pointer to the register arguments we just spilled. */ - addi r1, sp, LINKAGE_SIZE - } - { - /* Compute a pointer to the extra stack arguments (if any). */ - addli r2, sp, CLOSURE_FRAME_SIZE + LINKAGE_SIZE - /* Call C code to deal with all of the grotty details. */ - jal ffi_closure_tile_inner - } - { - addli r10, sp, CLOSURE_FRAME_SIZE - } - { - /* Restore the return address. */ - LW lr, r10 - /* Compute pointer to registers array. */ - addli r10, sp, LINKAGE_SIZE + (NUM_ARG_REGS * REG_SIZE) - } - /* Return all the register values, which C code may have set. */ - LOAD_REG(r0, r10) - LOAD_REG(r1, r10) - LOAD_REG(r2, r10) - LOAD_REG(r3, r10) - LOAD_REG(r4, r10) - LOAD_REG(r5, r10) - LOAD_REG(r6, r10) - LOAD_REG(r7, r10) - LOAD_REG(r8, r10) - LOAD_REG(r9, r10) - { - /* Pop the frame. */ - addli sp, sp, CLOSURE_FRAME_SIZE - jrp lr - } - - .cfi_endproc - .size ffi_closure_tile, . - ffi_closure_tile - - -/* What follows are code template instructions that get copied to the - closure trampoline by ffi_prep_closure_loc. The zeroed operands - get replaced by their proper values at runtime. */ - - .section .text.ffi_template_tramp_tile, "ax", @progbits - .align 8 - .globl ffi_template_tramp_tile - FFI_HIDDEN(ffi_template_tramp_tile) -ffi_template_tramp_tile: -#ifdef __tilegx__ - { - moveli r11, 0 /* backpatched to address of containing closure. */ - moveli r10, 0 /* backpatched to ffi_closure_tile. */ - } - /* Note: the following bundle gets generated multiple times - depending on the pointer value (esp. useful for -m32 mode). */ - { shl16insli r11, r11, 0 ; shl16insli r10, r10, 0 } - { info 2+8 /* for backtracer: -> pc in lr, frame size 0 */ ; jr r10 } -#else - /* 'jal .' yields a PC-relative offset of zero so we can OR in the - right offset at runtime. */ - { move r10, lr ; jal . /* ffi_closure_tile */ } -#endif - - .size ffi_template_tramp_tile, . - ffi_template_tramp_tile |