220 lines
8.5 KiB
ArmAsm
220 lines
8.5 KiB
ArmAsm
/*
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* This file is part of the Micro Python project, http://micropython.org/
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*
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* The MIT License (MIT)
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*
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* Copyright (c) 2013, 2014 Damien P. George
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*
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* Permission is hereby granted, free of charge, to any person obtaining a copy
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* of this software and associated documentation files (the "Software"), to deal
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* in the Software without restriction, including without limitation the rights
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* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
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* copies of the Software, and to permit persons to whom the Software is
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* furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included in
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* all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
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* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
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* AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
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* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
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* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
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* THE SOFTWARE.
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*/
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#if defined(__x86_64__) && !MICROPY_NLR_SETJMP
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// We only need the functions here if we are on x86-64, and we are not
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// using setjmp/longjmp.
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//
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// For reference, x86-64 callee save regs are:
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// rbx, rbp, rsp, r12, r13, r14, r15
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// the offset of nlr_top within mp_state_ctx_t
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#define NLR_TOP_OFFSET (2 * 8)
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#if defined(__APPLE__) && defined(__MACH__)
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#define NLR_TOP (_mp_state_ctx + NLR_TOP_OFFSET)
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#else
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#define NLR_TOP (mp_state_ctx + NLR_TOP_OFFSET)
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#endif
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#if defined(_WIN32) || defined(__CYGWIN__)
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#define NLR_OS_WINDOWS
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#endif
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.file "nlr.s"
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.text
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#if !defined(NLR_OS_WINDOWS)
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/******************************************************************************/
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//
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// Functions for *nix and OSX.
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// OSX needs _ prefix for binding to C, and doesn't support some directives.
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//
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/******************************************************************************/
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/**************************************/
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// mp_uint_t nlr_push(rdi=nlr_buf_t *nlr)
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#if !(defined(__APPLE__) && defined(__MACH__))
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.globl nlr_push
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.type nlr_push, @function
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nlr_push:
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#else
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.globl _nlr_push
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_nlr_push:
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#endif
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movq (%rsp), %rax # load return %rip
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movq %rax, 16(%rdi) # store %rip into nlr_buf
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movq %rbp, 24(%rdi) # store %rbp into nlr_buf
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movq %rsp, 32(%rdi) # store %rsp into nlr_buf
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movq %rbx, 40(%rdi) # store %rbx into nlr_buf
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movq %r12, 48(%rdi) # store %r12 into nlr_buf
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movq %r13, 56(%rdi) # store %r13 into nlr_buf
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movq %r14, 64(%rdi) # store %r14 into nlr_buf
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movq %r15, 72(%rdi) # store %r15 into nlr_buf
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movq NLR_TOP(%rip), %rax # get last nlr_buf
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movq %rax, (%rdi) # store it
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movq %rdi, NLR_TOP(%rip) # stor new nlr_buf (to make linked list)
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xorq %rax, %rax # return 0, normal return
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ret # return
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#if !(defined(__APPLE__) && defined(__MACH__))
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.size nlr_push, .-nlr_push
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#endif
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/**************************************/
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// void nlr_pop()
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#if !(defined(__APPLE__) && defined(__MACH__))
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.globl nlr_pop
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.type nlr_pop, @function
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nlr_pop:
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#else
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.globl _nlr_pop
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_nlr_pop:
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#endif
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movq NLR_TOP(%rip), %rax # get nlr_top into %rax
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movq (%rax), %rax # load prev nlr_buf
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movq %rax, NLR_TOP(%rip) # store prev nlr_buf (to unlink list)
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ret # return
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#if !(defined(__APPLE__) && defined(__MACH__))
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.size nlr_pop, .-nlr_pop
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#endif
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/**************************************/
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// void nlr_jump(rdi=mp_uint_t val)
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#if !(defined(__APPLE__) && defined(__MACH__))
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.globl nlr_jump
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.type nlr_jump, @function
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nlr_jump:
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#else
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.globl _nlr_jump
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_nlr_jump:
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#endif
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movq %rdi, %rax # put return value in %rax
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movq NLR_TOP(%rip), %rdi # get nlr_top into %rdi
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test %rdi, %rdi # check for nlr_top being NULL
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je .fail # fail if nlr_top is NULL
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movq %rax, 8(%rdi) # store return value
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movq (%rdi), %rax # load prev nlr_buf
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movq %rax, NLR_TOP(%rip) # store prev nlr_buf (to unlink list)
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movq 72(%rdi), %r15 # load saved %r15
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movq 64(%rdi), %r14 # load saved %r14
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movq 56(%rdi), %r13 # load saved %r13
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movq 48(%rdi), %r12 # load saved %r12
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movq 40(%rdi), %rbx # load saved %rbx
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movq 32(%rdi), %rsp # load saved %rsp
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movq 24(%rdi), %rbp # load saved %rbp
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movq 16(%rdi), %rax # load saved %rip
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movq %rax, (%rsp) # store saved %rip to stack
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xorq %rax, %rax # clear return register
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inc %al # increase to make 1, non-local return
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ret # return
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.fail:
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movq %rax, %rdi # put argument back in first-arg register
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#if !(defined(__APPLE__) && defined(__MACH__))
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je nlr_jump_fail # transfer control to nlr_jump_fail
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.size nlr_jump, .-nlr_jump
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#else
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je _nlr_jump_fail # transfer control to nlr_jump_fail
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#endif
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#else // !defined(NLR_OS_WINDOWS)
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/******************************************************************************/
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//
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// Functions for Windows
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//
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/******************************************************************************/
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/**************************************/
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// mp_uint_t nlr_push(rcx=nlr_buf_t *nlr)
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.globl nlr_push
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nlr_push:
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movq (%rsp), %rax # load return %rip
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movq %rax, 16(%rcx) # store %rip into nlr_buf
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movq %rbp, 24(%rcx) # store %rbp into nlr_buf
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movq %rsp, 32(%rcx) # store %rsp into nlr_buf
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movq %rbx, 40(%rcx) # store %rbx into nlr_buf
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movq %r12, 48(%rcx) # store %r12 into nlr_buf
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movq %r13, 56(%rcx) # store %r13 into nlr_buf
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movq %r14, 64(%rcx) # store %r14 into nlr_buf
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movq %r15, 72(%rcx) # store %r15 into
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movq %rdi, 80(%rcx) # store %rdr into
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movq %rsi, 88(%rcx) # store %rsi into
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movq NLR_TOP(%rip), %rax # get last nlr_buf
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movq %rax, (%rcx) # store it
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movq %rcx, NLR_TOP(%rip) # stor new nlr_buf (to make linked list)
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xorq %rax, %rax # return 0, normal return
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ret # return
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/**************************************/
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// void nlr_pop()
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.globl nlr_pop
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nlr_pop:
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movq NLR_TOP(%rip), %rax # get nlr_top into %rax
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movq (%rax), %rax # load prev nlr_buf
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movq %rax, NLR_TOP(%rip) # store prev nlr_buf (to unlink list)
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ret # return
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/**************************************/
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// void nlr_jump(rcx=mp_uint_t val)
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.globl nlr_jump
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nlr_jump:
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movq %rcx, %rax # put return value in %rax
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movq NLR_TOP(%rip), %rcx # get nlr_top into %rcx
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test %rcx, %rcx # check for nlr_top being NULL
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je .fail # fail if nlr_top is NULL
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movq %rax, 8(%rcx) # store return value
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movq (%rcx), %rax # load prev nlr_buf
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movq %rax, NLR_TOP(%rip) # store prev nlr_buf (to unlink list)
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movq 72(%rcx), %r15 # load saved %r15
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movq 64(%rcx), %r14 # load saved %r14
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movq 56(%rcx), %r13 # load saved %r13
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movq 48(%rcx), %r12 # load saved %r12
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movq 40(%rcx), %rbx # load saved %rbx
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movq 32(%rcx), %rsp # load saved %rsp
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movq 24(%rcx), %rbp # load saved %rbp
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movq 16(%rcx), %rax # load saved %rip
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movq 80(%rcx), %rdi # store %rdr into
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movq 88(%rcx), %rsi # store %rsi into
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movq %rax, (%rsp) # store saved %rip to stack
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xorq %rax, %rax # clear return register
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inc %al # increase to make 1, non-local return
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ret # return
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.fail:
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movq %rax, %rcx # put argument back in first-arg register
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je nlr_jump_fail # transfer control to nlr_jump_fail
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#endif // !defined(NLR_OS_WINDOWS)
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#endif // defined(__x86_64__) && !MICROPY_NLR_SETJMP
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