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Diffstat (limited to 'Modules/_ctypes/libffi/src/cris/sysv.S')
| -rw-r--r-- | Modules/_ctypes/libffi/src/cris/sysv.S | 215 |
1 files changed, 0 insertions, 215 deletions
diff --git a/Modules/_ctypes/libffi/src/cris/sysv.S b/Modules/_ctypes/libffi/src/cris/sysv.S deleted file mode 100644 index 79abaee4d9..0000000000 --- a/Modules/_ctypes/libffi/src/cris/sysv.S +++ /dev/null @@ -1,215 +0,0 @@ -/* ----------------------------------------------------------------------- - sysv.S - Copyright (c) 2004 Simon Posnjak - Copyright (c) 2005 Axis Communications AB - - CRIS 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 SIMON POSNJAK 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 <ffi.h> -#define CONCAT(x,y) x ## y -#define XCONCAT(x,y) CONCAT (x, y) -#define L(x) XCONCAT (__USER_LABEL_PREFIX__, x) - - .text - - ;; OK, when we get called we should have this (according to - ;; AXIS ETRAX 100LX Programmer's Manual chapter 6.3). - ;; - ;; R10: ffi_prep_args (func. pointer) - ;; R11: &ecif - ;; R12: cif->bytes - ;; R13: fig->flags - ;; sp+0: ecif.rvalue - ;; sp+4: fn (function pointer to the function that we need to call) - - .globl L(ffi_call_SYSV) - .type L(ffi_call_SYSV),@function - .hidden L(ffi_call_SYSV) - -L(ffi_call_SYSV): - ;; Save the regs to the stack. - push $srp - ;; Used for stack pointer saving. - push $r6 - ;; Used for function address pointer. - push $r7 - ;; Used for stack pointer saving. - push $r8 - ;; We save fig->flags to stack we will need them after we - ;; call The Function. - push $r13 - - ;; Saving current stack pointer. - move.d $sp,$r8 - move.d $sp,$r6 - - ;; Move address of ffi_prep_args to r13. - move.d $r10,$r13 - - ;; Make room on the stack for the args of fn. - sub.d $r12,$sp - - ;; Function void ffi_prep_args(char *stack, extended_cif *ecif) parameters are: - ;; r10 <-- stack pointer - ;; r11 <-- &ecif (already there) - move.d $sp,$r10 - - ;; Call the function. - jsr $r13 - - ;; Save the size of the structures which are passed on stack. - move.d $r10,$r7 - - ;; Move first four args in to r10..r13. - move.d [$sp+0],$r10 - move.d [$sp+4],$r11 - move.d [$sp+8],$r12 - move.d [$sp+12],$r13 - - ;; Adjust the stack and check if any parameters are given on stack. - addq 16,$sp - sub.d $r7,$r6 - cmp.d $sp,$r6 - - bpl go_on - nop - -go_on_no_params_on_stack: - move.d $r6,$sp - -go_on: - ;; Discover if we need to put rval address in to r9. - move.d [$r8+0],$r7 - cmpq FFI_TYPE_STRUCT,$r7 - bne call_now - nop - - ;; Move rval address to $r9. - move.d [$r8+20],$r9 - -call_now: - ;; Move address of The Function in to r7. - move.d [$r8+24],$r7 - - ;; Call The Function. - jsr $r7 - - ;; Reset stack. - move.d $r8,$sp - - ;; Load rval type (fig->flags) in to r13. - pop $r13 - - ;; Detect rval type. - cmpq FFI_TYPE_VOID,$r13 - beq epilogue - - cmpq FFI_TYPE_STRUCT,$r13 - beq epilogue - - cmpq FFI_TYPE_DOUBLE,$r13 - beq return_double_or_longlong - - cmpq FFI_TYPE_UINT64,$r13 - beq return_double_or_longlong - - cmpq FFI_TYPE_SINT64,$r13 - beq return_double_or_longlong - nop - - ;; Just return the 32 bit value. - ba return - nop - -return_double_or_longlong: - ;; Load half of the rval to r10 and the other half to r11. - move.d [$sp+16],$r13 - move.d $r10,[$r13] - addq 4,$r13 - move.d $r11,[$r13] - ba epilogue - nop - -return: - ;; Load the rval to r10. - move.d [$sp+16],$r13 - move.d $r10,[$r13] - -epilogue: - pop $r8 - pop $r7 - pop $r6 - Jump [$sp+] - - .size ffi_call_SYSV,.-ffi_call_SYSV - -/* Save R10..R13 into an array, somewhat like varargs. Copy the next - argument too, to simplify handling of any straddling parameter. - Save R9 and SP after those. Jump to function handling the rest. - Since this is a template, copied and the main function filled in by - the user. */ - - .globl L(ffi_cris_trampoline_template) - .type L(ffi_cris_trampoline_template),@function - .hidden L(ffi_cris_trampoline_template) - -L(ffi_cris_trampoline_template): -0: - /* The value we get for "PC" is right after the prefix instruction, - two bytes from the beginning, i.e. 0b+2. */ - move.d $r10,[$pc+2f-(0b+2)] - move.d $pc,$r10 -1: - addq 2f-1b+4,$r10 - move.d $r11,[$r10+] - move.d $r12,[$r10+] - move.d $r13,[$r10+] - move.d [$sp],$r11 - move.d $r11,[$r10+] - move.d $r9,[$r10+] - move.d $sp,[$r10+] - subq FFI_CRIS_TRAMPOLINE_DATA_PART_SIZE,$r10 - move.d 0,$r11 -3: - jump 0 -2: - .size ffi_cris_trampoline_template,.-0b - -/* This macro create a constant usable as "extern const int \name" in - C from within libffi, when \name has no prefix decoration. */ - - .macro const name,value - .globl \name - .type \name,@object - .hidden \name -\name: - .dword \value - .size \name,4 - .endm - -/* Constants for offsets within the trampoline. We could do this with - just symbols, avoiding memory contents and memory accesses, but the - C usage code would look a bit stranger. */ - - const L(ffi_cris_trampoline_fn_offset),2b-4-0b - const L(ffi_cris_trampoline_closure_offset),3b-4-0b |