py/nlrx64: Convert from assembler to C file with inline asm.
This commit is contained in:
Damien George
parent
a85755aa22
commit
321848470c
262
py/nlrx64.S
262
py/nlrx64.S
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@ -1,262 +0,0 @@
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/*
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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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#define MP_THREAD_GET_STATE _mp_thread_get_state
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#else
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#define NLR_TOP (mp_state_ctx + NLR_TOP_OFFSET)
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#define MP_THREAD_GET_STATE mp_thread_get_state
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#endif
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// offset of nlr_top within mp_state_thread_t structure
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#define NLR_TOP_TH_OFF (2 * 8)
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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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#if !MICROPY_PY_THREAD
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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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#else
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movq %rdi, %rbp # since we make a call, must save rdi in rbp
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callq MP_THREAD_GET_STATE # get mp_state_thread ptr into rax
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movq NLR_TOP_TH_OFF(%rax), %rsi # get thread.nlr_top (last nlr_buf)
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movq %rsi, (%rbp) # store it
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movq %rbp, NLR_TOP_TH_OFF(%rax) # store new nlr_buf (to make linked list)
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movq 24(%rbp), %rbp # restore rbp
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#endif
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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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#if !MICROPY_PY_THREAD
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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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#else
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callq MP_THREAD_GET_STATE # get mp_state_thread ptr into rax
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movq NLR_TOP_TH_OFF(%rax), %rdi # get thread.nlr_top (last nlr_buf)
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movq (%rdi), %rdi # load prev nlr_buf
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movq %rdi, NLR_TOP_TH_OFF(%rax) # store prev nlr_buf (to unlink list)
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#endif
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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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#if !MICROPY_PY_THREAD
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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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#else
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movq %rdi, %rbp # put return value in rbp
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callq MP_THREAD_GET_STATE # get thread ptr in rax
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movq %rax, %rsi # put thread ptr in rsi
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movq %rbp, %rax # put return value to rax (for je .fail)
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movq NLR_TOP_TH_OFF(%rsi), %rdi # get thread.nlr_top in 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_TH_OFF(%rsi) # store prev nlr_buf (to unlink list)
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#endif
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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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#if defined(linux)
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.section .note.GNU-stack,"",%progbits
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#endif
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@ -0,0 +1,129 @@
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/*
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* This file is part of the MicroPython 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) 2013-2017 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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#include "py/mpstate.h"
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#include "py/nlr.h"
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#if !MICROPY_NLR_SETJMP && defined(__x86_64__)
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#undef nlr_push
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// x86-64 callee-save registers are:
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// rbx, rbp, rsp, r12, r13, r14, r15
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#define NLR_OS_WINDOWS (defined(_WIN32) || defined(__CYGWIN__))
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__attribute__((used)) unsigned int nlr_push_tail(nlr_buf_t *nlr);
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unsigned int nlr_push(nlr_buf_t *nlr) {
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(void)nlr;
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#if NLR_OS_WINDOWS
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__asm volatile (
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"movq (%rsp), %rax \n" // load return %rip
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"movq %rax, 16(%rcx) \n" // store %rip into nlr_buf
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"movq %rbp, 24(%rcx) \n" // store %rbp into nlr_buf
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"movq %rsp, 32(%rcx) \n" // store %rsp into nlr_buf
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"movq %rbx, 40(%rcx) \n" // store %rbx into nlr_buf
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"movq %r12, 48(%rcx) \n" // store %r12 into nlr_buf
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"movq %r13, 56(%rcx) \n" // store %r13 into nlr_buf
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"movq %r14, 64(%rcx) \n" // store %r14 into nlr_buf
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"movq %r15, 72(%rcx) \n" // store %r15 into nlr_buf
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"movq %rdi, 80(%rcx) \n" // store %rdr into nlr_buf
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"movq %rsi, 88(%rcx) \n" // store %rsi into nlr_buf
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"jmp nlr_push_tail \n" // do the rest in C
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);
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#else
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__asm volatile (
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"movq (%rsp), %rax \n" // load return %rip
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"movq %rax, 16(%rdi) \n" // store %rip into nlr_buf
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"movq %rbp, 24(%rdi) \n" // store %rbp into nlr_buf
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"movq %rsp, 32(%rdi) \n" // store %rsp into nlr_buf
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"movq %rbx, 40(%rdi) \n" // store %rbx into nlr_buf
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"movq %r12, 48(%rdi) \n" // store %r12 into nlr_buf
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"movq %r13, 56(%rdi) \n" // store %r13 into nlr_buf
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"movq %r14, 64(%rdi) \n" // store %r14 into nlr_buf
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"movq %r15, 72(%rdi) \n" // store %r15 into nlr_buf
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"jmp nlr_push_tail \n" // do the rest in C
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);
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#endif
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return 0; // needed to silence compiler warning
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}
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__attribute__((used)) unsigned int nlr_push_tail(nlr_buf_t *nlr) {
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nlr_buf_t **top = &MP_STATE_THREAD(nlr_top);
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nlr->prev = *top;
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*top = nlr;
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return 0; // normal return
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}
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void nlr_pop(void) {
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nlr_buf_t **top = &MP_STATE_THREAD(nlr_top);
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*top = (*top)->prev;
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}
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NORETURN void nlr_jump(void *val) {
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nlr_buf_t **top_ptr = &MP_STATE_THREAD(nlr_top);
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nlr_buf_t *top = *top_ptr;
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if (top == NULL) {
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nlr_jump_fail(val);
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}
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top->ret_val = val;
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*top_ptr = top->prev;
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__asm volatile (
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"movq %0, %%rcx \n" // %rcx points to nlr_buf
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#if NLR_OS_WINDOWS
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"movq 88(%%rcx), %%rsi \n" // load saved %rsi
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"movq 80(%%rcx), %%rdi \n" // load saved %rdr
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#endif
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"movq 72(%%rcx), %%r15 \n" // load saved %r15
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"movq 64(%%rcx), %%r14 \n" // load saved %r14
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"movq 56(%%rcx), %%r13 \n" // load saved %r13
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"movq 48(%%rcx), %%r12 \n" // load saved %r12
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"movq 40(%%rcx), %%rbx \n" // load saved %rbx
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"movq 32(%%rcx), %%rsp \n" // load saved %rsp
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"movq 24(%%rcx), %%rbp \n" // load saved %rbp
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"movq 16(%%rcx), %%rax \n" // load saved %rip
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"movq %%rax, (%%rsp) \n" // store saved %rip to stack
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"xorq %%rax, %%rax \n" // clear return register
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"inc %%al \n" // increase to make 1, non-local return
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"ret \n" // return
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: // output operands
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: "r"(top) // input operands
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: // clobbered registers
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);
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for (;;); // needed to silence compiler warning
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}
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#endif // !MICROPY_NLR_SETJMP && defined(__x86_64__)
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