diff options
Diffstat (limited to 'Modules/_ctypes/libffi/src/xtensa/sysv.S')
| -rw-r--r-- | Modules/_ctypes/libffi/src/xtensa/sysv.S | 253 |
1 files changed, 0 insertions, 253 deletions
diff --git a/Modules/_ctypes/libffi/src/xtensa/sysv.S b/Modules/_ctypes/libffi/src/xtensa/sysv.S deleted file mode 100644 index 64e6a0918d..0000000000 --- a/Modules/_ctypes/libffi/src/xtensa/sysv.S +++ /dev/null @@ -1,253 +0,0 @@ -/* ----------------------------------------------------------------------- - sysv.S - Copyright (c) 2013 Tensilica, Inc. - - XTENSA 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> - -#define ENTRY(name) .text; .globl name; .type name,@function; .align 4; name: -#define END(name) .size name , . - name - -/* Assert that the table below is in sync with ffi.h. */ - -#if FFI_TYPE_UINT8 != 5 \ - || FFI_TYPE_SINT8 != 6 \ - || FFI_TYPE_UINT16 != 7 \ - || FFI_TYPE_SINT16 != 8 \ - || FFI_TYPE_UINT32 != 9 \ - || FFI_TYPE_SINT32 != 10 \ - || FFI_TYPE_UINT64 != 11 -#error "xtensa/sysv.S out of sync with ffi.h" -#endif - - -/* ffi_call_SYSV (rvalue, rbytes, flags, (*fnaddr)(), bytes, ecif) - void *rvalue; a2 - unsigned long rbytes; a3 - unsigned flags; a4 - void (*fnaddr)(); a5 - unsigned long bytes; a6 - extended_cif* ecif) a7 -*/ - -ENTRY(ffi_call_SYSV) - - entry a1, 32 # 32 byte frame for using call8 below - - mov a10, a7 # a10(->arg0): ecif - sub a11, a1, a6 # a11(->arg1): stack pointer - mov a7, a1 # fp - movsp a1, a11 # set new sp = old_sp - bytes - - movi a8, ffi_prep_args - callx8 a8 # ffi_prep_args(ecif, stack) - - # prepare to move stack pointer back up to 6 arguments - # note that 'bytes' is already aligned - - movi a10, 6*4 - sub a11, a6, a10 - movgez a6, a10, a11 - add a6, a1, a6 - - - # we can pass up to 6 arguments in registers - # for simplicity, just load 6 arguments - # (the stack size is at least 32 bytes, so no risk to cross boundaries) - - l32i a10, a1, 0 - l32i a11, a1, 4 - l32i a12, a1, 8 - l32i a13, a1, 12 - l32i a14, a1, 16 - l32i a15, a1, 20 - - # move stack pointer - - movsp a1, a6 - - callx8 a5 # (*fn)(args...) - - # Handle return value(s) - - beqz a2, .Lexit - - movi a5, FFI_TYPE_STRUCT - bne a4, a5, .Lstore - movi a5, 16 - blt a5, a3, .Lexit - - s32i a10, a2, 0 - blti a3, 5, .Lexit - addi a3, a3, -1 - s32i a11, a2, 4 - blti a3, 8, .Lexit - s32i a12, a2, 8 - blti a3, 12, .Lexit - s32i a13, a2, 12 - -.Lexit: retw - -.Lstore: - addi a4, a4, -FFI_TYPE_UINT8 - bgei a4, 7, .Lexit # should never happen - movi a6, store_calls - add a4, a4, a4 - addx4 a6, a4, a6 # store_table + idx * 8 - jx a6 - - .align 8 -store_calls: - # UINT8 - s8i a10, a2, 0 - retw - - # SINT8 - .align 8 - s8i a10, a2, 0 - retw - - # UINT16 - .align 8 - s16i a10, a2, 0 - retw - - # SINT16 - .align 8 - s16i a10, a2, 0 - retw - - # UINT32 - .align 8 - s32i a10, a2, 0 - retw - - # SINT32 - .align 8 - s32i a10, a2, 0 - retw - - # UINT64 - .align 8 - s32i a10, a2, 0 - s32i a11, a2, 4 - retw - -END(ffi_call_SYSV) - - -/* - * void ffi_cacheflush (unsigned long start, unsigned long end) - */ - -#define EXTRA_ARGS_SIZE 24 - -ENTRY(ffi_cacheflush) - - entry a1, 16 - -1: dhwbi a2, 0 - ihi a2, 0 - addi a2, a2, 4 - blt a2, a3, 1b - - retw - -END(ffi_cacheflush) - -/* ffi_trampoline is copied to the stack */ - -ENTRY(ffi_trampoline) - - entry a1, 16 + (FFI_REGISTER_NARGS * 4) + (4 * 4) # [ 0] - j 2f # [ 3] - .align 4 # [ 6] -1: .long 0 # [ 8] -2: l32r a15, 1b # [12] - _mov a14, a0 # [15] - callx0 a15 # [18] - # [21] -END(ffi_trampoline) - -/* - * ffi_closure() - * - * a0: closure + 21 - * a14: return address (a0) - */ - -ENTRY(ffi_closure_SYSV) - - /* intentionally omitting entry here */ - - # restore return address (a0) and move pointer to closure to a10 - addi a10, a0, -21 - mov a0, a14 - - # allow up to 4 arguments as return values - addi a11, a1, 4 * 4 - - # save up to 6 arguments to stack (allocated by entry below) - s32i a2, a11, 0 - s32i a3, a11, 4 - s32i a4, a11, 8 - s32i a5, a11, 12 - s32i a6, a11, 16 - s32i a7, a11, 20 - - movi a8, ffi_closure_SYSV_inner - mov a12, a1 - callx8 a8 # .._inner(*closure, **avalue, *rvalue) - - # load up to four return arguments - l32i a2, a1, 0 - l32i a3, a1, 4 - l32i a4, a1, 8 - l32i a5, a1, 12 - - # (sign-)extend return value - movi a11, FFI_TYPE_UINT8 - bne a10, a11, 1f - extui a2, a2, 0, 8 - retw - -1: movi a11, FFI_TYPE_SINT8 - bne a10, a11, 1f - sext a2, a2, 7 - retw - -1: movi a11, FFI_TYPE_UINT16 - bne a10, a11, 1f - extui a2, a2, 0, 16 - retw - -1: movi a11, FFI_TYPE_SINT16 - bne a10, a11, 1f - sext a2, a2, 15 - -1: retw - -END(ffi_closure_SYSV) |