circuitpython/py/nlrx64.S
Damien George 04b9147e15 Add license header to (almost) all files.
Blanket wide to all .c and .h files.  Some files originating from ST are
difficult to deal with (license wise) so it was left out of those.

Also merged modpyb.h, modos.h, modstm.h and modtime.h in stmhal/.
2014-05-03 23:27:38 +01:00

184 lines
7.4 KiB
ArmAsm

/*
* This file is part of the Micro Python project, http://micropython.org/
*
* The MIT License (MIT)
*
* Copyright (c) 2013, 2014 Damien P. George
*
* 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.
*/
#if defined(__x86_64__) && !MICROPY_NLR_SETJMP
/* x64 callee save: bx, bp, sp, r12, r13, r14, r15 */
.file "nlr.s"
.text
#if !defined(__CYGWIN__)
/* uint nlr_push(rdi=nlr_buf_t *nlr) */
#if !(defined(__APPLE__) && defined(__MACH__))
.globl nlr_push
.type nlr_push, @function
nlr_push:
#else
.globl _nlr_push
_nlr_push:
#endif
movq (%rsp), %rax # load return %rip
movq %rax, 16(%rdi) # store %rip into nlr_buf
movq %rbp, 24(%rdi) # store %rbp into nlr_buf
movq %rsp, 32(%rdi) # store %rsp into nlr_buf
movq %rbx, 40(%rdi) # store %rbx into nlr_buf
movq %r12, 48(%rdi) # store %r12 into nlr_buf
movq %r13, 56(%rdi) # store %r13 into nlr_buf
movq %r14, 64(%rdi) # store %r14 into nlr_buf
movq %r15, 72(%rdi) # store %r15 into nlr_buf
movq nlr_top(%rip), %rax # get last nlr_buf
movq %rax, (%rdi) # store it
movq %rdi, nlr_top(%rip) # stor new nlr_buf (to make linked list)
xorq %rax, %rax # return 0, normal return
ret # return
#if !(defined(__APPLE__) && defined(__MACH__))
.size nlr_push, .-nlr_push
#endif
/* void nlr_pop() */
#if !(defined(__APPLE__) && defined(__MACH__))
.globl nlr_pop
.type nlr_pop, @function
nlr_pop:
#else
.globl _nlr_pop
_nlr_pop:
#endif
movq nlr_top(%rip), %rax # get nlr_top into %rax
movq (%rax), %rax # load prev nlr_buf
movq %rax, nlr_top(%rip) # store prev nlr_buf (to unlink list)
ret # return
#if !(defined(__APPLE__) && defined(__MACH__))
.size nlr_pop, .-nlr_pop
#endif
/* void nlr_jump(rdi=uint val) */
#if !(defined(__APPLE__) && defined(__MACH__))
.globl nlr_jump
.type nlr_jump, @function
nlr_jump:
#else
.globl _nlr_jump
_nlr_jump:
#endif
movq %rdi, %rax # put return value in %rax
movq nlr_top(%rip), %rdi # get nlr_top into %rdi
test %rdi, %rdi # check for nlr_top being NULL
je .fail # fail if nlr_top is NULL
movq %rax, 8(%rdi) # store return value
movq (%rdi), %rax # load prev nlr_buf
movq %rax, nlr_top(%rip) # store prev nlr_buf (to unlink list)
movq 72(%rdi), %r15 # load saved %r15
movq 64(%rdi), %r14 # load saved %r14
movq 56(%rdi), %r13 # load saved %r13
movq 48(%rdi), %r12 # load saved %r12
movq 40(%rdi), %rbx # load saved %rbx
movq 32(%rdi), %rsp # load saved %rsp
movq 24(%rdi), %rbp # load saved %rbp
movq 16(%rdi), %rax # load saved %rip
movq %rax, (%rsp) # store saved %rip to stack
xorq %rax, %rax # clear return register
inc %al # increase to make 1, non-local return
ret # return
.fail:
movq %rax, %rdi # put argument back in first-arg register
je nlr_jump_fail # transfer control to nlr_jump_fail
#if !(defined(__APPLE__) && defined(__MACH__))
.size nlr_jump, .-nlr_jump
#endif
.bss
#if !(defined(__APPLE__) && defined(__MACH__))
.local nlr_top
#endif
.comm nlr_top,8,8
#else // !defined(__CYGWIN__)
/* uint nlr_push(rcx=nlr_buf_t *nlr) */
.globl nlr_push
nlr_push:
movq (%rsp), %rax # load return %rip
movq %rax, 16(%rcx) # store %rip into nlr_buf
movq %rbp, 24(%rcx) # store %rbp into nlr_buf
movq %rsp, 32(%rcx) # store %rsp into nlr_buf
movq %rbx, 40(%rcx) # store %rbx into nlr_buf
movq %r12, 48(%rcx) # store %r12 into nlr_buf
movq %r13, 56(%rcx) # store %r13 into nlr_buf
movq %r14, 64(%rcx) # store %r14 into nlr_buf
movq %r15, 72(%rcx) # store %r15 into
movq %rdi, 80(%rcx) # store %rdr into
movq %rsi, 88(%rcx) # store %rsi into
movq nlr_top(%rip), %rax # get last nlr_buf
movq %rax, (%rcx) # store it
movq %rcx, nlr_top(%rip) # stor new nlr_buf (to make linked list)
xorq %rax, %rax # return 0, normal return
ret # return
/* void nlr_pop() */
.globl nlr_pop
nlr_pop:
movq nlr_top(%rip), %rax # get nlr_top into %rax
movq (%rax), %rax # load prev nlr_buf
movq %rax, nlr_top(%rip) # store prev nlr_buf (to unlink list)
ret # return
/* void nlr_jump(rcx=uint val) */
.globl nlr_jump
nlr_jump:
movq %rcx, %rax # put return value in %rax
movq nlr_top(%rip), %rcx # get nlr_top into %rcx
test %rcx, %rcx # check for nlr_top being NULL
je .fail # fail if nlr_top is NULL
movq %rax, 8(%rcx) # store return value
movq (%rcx), %rax # load prev nlr_buf
movq %rax, nlr_top(%rip) # store prev nlr_buf (to unlink list)
movq 72(%rcx), %r15 # load saved %r15
movq 64(%rcx), %r14 # load saved %r14
movq 56(%rcx), %r13 # load saved %r13
movq 48(%rcx), %r12 # load saved %r12
movq 40(%rcx), %rbx # load saved %rbx
movq 32(%rcx), %rsp # load saved %rsp
movq 24(%rcx), %rbp # load saved %rbp
movq 16(%rcx), %rax # load saved %rip
movq 80(%rcx), %rdi # store %rdr into
movq 88(%rcx), %rsi # store %rsi into
movq %rax, (%rsp) # store saved %rip to stack
xorq %rax, %rax # clear return register
inc %al # increase to make 1, non-local return
ret # return
.fail:
movq %rax, %rcx # put argument back in first-arg register
je nlr_jump_fail # transfer control to nlr_jump_fail
.bss
.comm nlr_top,8,8
#endif // !defined(__CYGWIN__)
#endif // __x86_64__