196 lines
6.8 KiB
ArmAsm
196 lines
6.8 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(__i386__) && !MICROPY_NLR_SETJMP
|
|
|
|
// We only need the functions here if we are on x86, and we are not
|
|
// using setjmp/longjmp.
|
|
//
|
|
// For reference, x86 callee save regs are:
|
|
// ebx, esi, edi, ebp, esp, eip
|
|
|
|
// the offset of nlr_top within mp_state_ctx_t
|
|
#define NLR_TOP_OFFSET (2 * 4)
|
|
|
|
#if defined(_WIN32) || defined(__CYGWIN__)
|
|
#define NLR_OS_WINDOWS
|
|
#endif
|
|
|
|
#if defined(__APPLE__) && defined(__MACH__)
|
|
#define NLR_OS_MAC
|
|
#endif
|
|
|
|
#if defined(NLR_OS_WINDOWS) || defined(NLR_OS_MAC)
|
|
#define NLR_TOP (_mp_state_ctx + NLR_TOP_OFFSET)
|
|
#define MP_THREAD_GET_STATE _mp_thread_get_state
|
|
#else
|
|
#define NLR_TOP (mp_state_ctx + NLR_TOP_OFFSET)
|
|
#define MP_THREAD_GET_STATE mp_thread_get_state
|
|
#endif
|
|
|
|
// offset of nlr_top within mp_state_thread_t structure
|
|
#define NLR_TOP_TH_OFF (0)
|
|
|
|
.file "nlr.s"
|
|
.text
|
|
|
|
/**************************************/
|
|
// mp_uint_t nlr_push(4(%esp)=nlr_buf_t *nlr)
|
|
|
|
#if defined(NLR_OS_WINDOWS)
|
|
.globl _nlr_push
|
|
.def _nlr_push; .scl 2; .type 32; .endef
|
|
_nlr_push:
|
|
#elif defined(NLR_OS_MAC)
|
|
.globl _nlr_push
|
|
_nlr_push:
|
|
#else
|
|
.globl nlr_push
|
|
.type nlr_push, @function
|
|
nlr_push:
|
|
#endif
|
|
mov 4(%esp), %edx # load nlr_buf
|
|
mov (%esp), %eax # load return %ip
|
|
mov %eax, 8(%edx) # store %ip into nlr_buf+8
|
|
mov %ebp, 12(%edx) # store %bp into nlr_buf+12
|
|
mov %esp, 16(%edx) # store %sp into nlr_buf+16
|
|
mov %ebx, 20(%edx) # store %bx into nlr_buf+20
|
|
mov %edi, 24(%edx) # store %di into nlr_buf
|
|
mov %esi, 28(%edx) # store %si into nlr_buf
|
|
|
|
#if !MICROPY_PY_THREAD
|
|
mov NLR_TOP, %eax # load nlr_top
|
|
mov %eax, (%edx) # store it
|
|
mov %edx, NLR_TOP # stor new nlr_buf (to make linked list)
|
|
#else
|
|
// to check: stack is aligned to 16-byte boundary before this call
|
|
call MP_THREAD_GET_STATE # get mp_state_thread ptr into eax
|
|
mov 4(%esp), %edx # load nlr_buf argument into edx (edx clobbered by call)
|
|
mov NLR_TOP_TH_OFF(%eax), %ecx # get thread.nlr_top (last nlr_buf)
|
|
mov %ecx, (%edx) # store it
|
|
mov %edx, NLR_TOP_TH_OFF(%eax) # store new nlr_buf (to make linked list)
|
|
#endif
|
|
|
|
xor %eax, %eax # return 0, normal return
|
|
ret # return
|
|
#if !defined(NLR_OS_WINDOWS) && !defined(NLR_OS_MAC)
|
|
.size nlr_push, .-nlr_push
|
|
#endif
|
|
|
|
/**************************************/
|
|
// void nlr_pop()
|
|
|
|
#if defined(NLR_OS_WINDOWS)
|
|
.globl _nlr_pop
|
|
.def _nlr_pop; .scl 2; .type 32; .endef
|
|
_nlr_pop:
|
|
#elif defined(NLR_OS_MAC)
|
|
.globl _nlr_pop
|
|
_nlr_pop:
|
|
#else
|
|
.globl nlr_pop
|
|
.type nlr_pop, @function
|
|
nlr_pop:
|
|
#endif
|
|
|
|
#if !MICROPY_PY_THREAD
|
|
mov NLR_TOP, %eax # load nlr_top
|
|
mov (%eax), %eax # load prev nlr_buf
|
|
mov %eax, NLR_TOP # store nlr_top (to unlink list)
|
|
#else
|
|
call MP_THREAD_GET_STATE # get mp_state_thread ptr into eax
|
|
mov NLR_TOP_TH_OFF(%eax), %ecx # get thread.nlr_top (last nlr_buf)
|
|
mov (%ecx), %ecx # load prev nlr_buf
|
|
mov %ecx, NLR_TOP_TH_OFF(%eax) # store prev nlr_buf (to unlink list)
|
|
#endif
|
|
|
|
ret # return
|
|
#if !defined(NLR_OS_WINDOWS) && !defined(NLR_OS_MAC)
|
|
.size nlr_pop, .-nlr_pop
|
|
#endif
|
|
|
|
/**************************************/
|
|
// void nlr_jump(4(%esp)=mp_uint_t val)
|
|
|
|
#if defined(NLR_OS_WINDOWS)
|
|
.globl _nlr_jump
|
|
.def _nlr_jump; .scl 2; .type 32; .endef
|
|
_nlr_jump:
|
|
#elif defined(NLR_OS_MAC)
|
|
.globl _nlr_jump
|
|
_nlr_jump:
|
|
#else
|
|
.globl nlr_jump
|
|
.type nlr_jump, @function
|
|
nlr_jump:
|
|
#endif
|
|
|
|
#if !MICROPY_PY_THREAD
|
|
mov NLR_TOP, %edx # load nlr_top
|
|
test %edx, %edx # check for nlr_top being NULL
|
|
#if defined(NLR_OS_WINDOWS) || defined(NLR_OS_MAC)
|
|
je _nlr_jump_fail # fail if nlr_top is NULL
|
|
#else
|
|
je nlr_jump_fail # fail if nlr_top is NULL
|
|
#endif
|
|
mov 4(%esp), %eax # load return value
|
|
mov %eax, 4(%edx) # store return value
|
|
mov (%edx), %eax # load prev nlr_top
|
|
mov %eax, NLR_TOP # store nlr_top (to unlink list)
|
|
#else
|
|
call MP_THREAD_GET_STATE # get mp_state_thread ptr into eax
|
|
mov NLR_TOP_TH_OFF(%eax), %edx # get thread.nlr_top (last nlr_buf)
|
|
test %edx, %edx # check for nlr_top being NULL
|
|
#if defined(NLR_OS_WINDOWS) || defined(NLR_OS_MAC)
|
|
je _nlr_jump_fail # fail if nlr_top is NULL
|
|
#else
|
|
je nlr_jump_fail # fail if nlr_top is NULL
|
|
#endif
|
|
mov 4(%esp), %ecx # load return value
|
|
mov %ecx, 4(%edx) # store return value
|
|
mov (%edx), %ecx # load prev nlr_top
|
|
mov %ecx, NLR_TOP_TH_OFF(%eax) # store nlr_top (to unlink list)
|
|
#endif
|
|
|
|
mov 28(%edx), %esi # load saved %si
|
|
mov 24(%edx), %edi # load saved %di
|
|
mov 20(%edx), %ebx # load saved %bx
|
|
mov 16(%edx), %esp # load saved %sp
|
|
mov 12(%edx), %ebp # load saved %bp
|
|
mov 8(%edx), %eax # load saved %ip
|
|
mov %eax, (%esp) # store saved %ip to stack
|
|
xor %eax, %eax # clear return register
|
|
inc %al # increase to make 1, non-local return
|
|
ret # return
|
|
#if !defined(NLR_OS_WINDOWS) && !defined(NLR_OS_MAC)
|
|
.size nlr_jump, .-nlr_jump
|
|
#endif
|
|
|
|
#endif // defined(__i386__) && !MICROPY_NLR_SETJMP
|
|
#if defined(linux)
|
|
.section .note.GNU-stack,"",%progbits
|
|
#endif
|