def write_real_errno(self, save_err):
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. The x0-x7 registers contain arguments to the
# future call;
# the x8-x10 registers contain various stuff. XXX what?
# We still have x11 and up.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.x11.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip0.value, r.x11.value, p_errno)
self.mc.LDR_ri(r.x11.value, r.x11.value, rpy_errno)
self.mc.STR_ri(r.x11.value, r.ip0.value, 0)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.x11.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip0.value, r.x11.value, p_errno)
self.mc.MOVZ_r_u16(r.x11.value, 0, 0)
self.mc.STR_ri(r.x11.value, r.ip0.value, 0)
def write_real_errno(self, save_err):
"""This occurs just before emit_raw_call().
"""
mc = self.mc
if handle_lasterror and (save_err & rffi.RFFI_READSAVED_LASTERROR):
# must call SetLastError(). There are no registers to save
# if we are on 32-bit in this case: no register contains
# the arguments to the main function we want to call afterwards.
# On win64, though, it's more messy. It could be better optimized
# but for now we save (again) the registers containing arguments,
# and restore them afterwards.
from rpython.rlib.rwin32 import _SetLastError
adr = llmemory.cast_ptr_to_adr(_SetLastError)
SetLastError_addr = self.asm.cpu.cast_adr_to_int(adr)
#
if save_err & rffi.RFFI_ALT_ERRNO:
lasterror = llerrno.get_alt_lasterror_offset(self.asm.cpu)
else:
lasterror = llerrno.get_rpy_lasterror_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
if not WIN64:
self.save_stack_position() # => edi, callee-saved
mc.PUSH_m((tlofsreg.value, lasterror))
mc.CALL(imm(follow_jump(SetLastError_addr)))
# restore the stack position without assuming a particular
# calling convention of _SetLastError()
self.mc.stack_frame_size_delta(-WORD)
self.mc.MOV(esp, self.saved_stack_position_reg)
else:
self.win64_save_register_args()
mc.MOV_rm(ecx.value, (tlofsreg.value, lasterror))
mc.CALL(imm(follow_jump(SetLastError_addr)))
self.win64_restore_register_args()
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. Most registers are free here, including the
# callee-saved ones, except 'ebx' and except the ones used to
# pass the arguments on x86-64.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
if IS_X86_32:
tmpreg = edx
else:
tmpreg = r10 # edx is used for 3rd argument
mc.MOV_rm(tmpreg.value, (tlofsreg.value, p_errno))
mc.MOV32_rm(eax.value, (tlofsreg.value, rpy_errno))
mc.MOV32_mr((tmpreg.value, 0), eax.value)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
mc.MOV_rm(eax.value, (tlofsreg.value, p_errno))
mc.MOV32_mi((eax.value, 0), 0)
def write_real_errno(self, save_err):
"""This occurs just before emit_raw_call().
"""
mc = self.mc
if handle_lasterror and (save_err & rffi.RFFI_READSAVED_LASTERROR):
# must call SetLastError(). There are no registers to save
# because we are on 32-bit in this case: no register contains
# the arguments to the main function we want to call afterwards.
from rpython.rlib.rwin32 import _SetLastError
adr = llmemory.cast_ptr_to_adr(_SetLastError)
SetLastError_addr = self.asm.cpu.cast_adr_to_int(adr)
assert isinstance(self, CallBuilder32) # Windows 32-bit only
#
if save_err & rffi.RFFI_ALT_ERRNO:
lasterror = llerrno.get_alt_lasterror_offset(self.asm.cpu)
else:
lasterror = llerrno.get_rpy_lasterror_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi, callee-saved
self.save_stack_position() # => edi, callee-saved
mc.PUSH_m((tlofsreg.value, lasterror))
mc.CALL(imm(follow_jump(SetLastError_addr)))
# restore the stack position without assuming a particular
# calling convention of _SetLastError()
self.mc.stack_frame_size_delta(-WORD)
self.mc.MOV(esp, self.saved_stack_position_reg)
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. Most registers are free here, including the
# callee-saved ones, except 'ebx' and except the ones used to
# pass the arguments on x86-64.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
if IS_X86_32:
tmpreg = edx
else:
tmpreg = r11 # edx is used for 3rd argument
mc.MOV_rm(tmpreg.value, (tlofsreg.value, p_errno))
mc.MOV32_rm(eax.value, (tlofsreg.value, rpy_errno))
mc.MOV32_mr((tmpreg.value, 0), eax.value)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
mc.MOV_rm(eax.value, (tlofsreg.value, p_errno))
mc.MOV32_mi((eax.value, 0), 0)
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers r3-r6
# never contain anything after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r3, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LG(r.r4, l.addr(p_errno, r.r3))
self.mc.LGF(r.r4, l.addr(0, r.r4))
self.mc.STY(r.r4, l.addr(rpy_errno, r.r3))
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers r4-r10
# never contain anything after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r9.value, r.SP.value, THREADLOCAL_ADDR_OFFSET)
self.mc.ld(r.r10.value, r.r9.value, p_errno)
self.mc.lwz(r.r10.value, r.r10.value, 0)
self.mc.stw(r.r10.value, r.r9.value, rpy_errno)
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers r3-r6
# never contain anything after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r3, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LG(r.r4, l.addr(p_errno, r.r3))
self.mc.LGF(r.r4, l.addr(0, r.r4))
self.mc.STY(r.r4, l.addr(rpy_errno, r.r3))
def write_real_errno(self, save_err):
"""This occurs just before emit_raw_call().
"""
mc = self.mc
if handle_lasterror and (save_err & rffi.RFFI_READSAVED_LASTERROR):
# must call SetLastError(). There are no registers to save
# because we are on 32-bit in this case: no register contains
# the arguments to the main function we want to call afterwards.
from rpython.rlib.rwin32 import _SetLastError
adr = llmemory.cast_ptr_to_adr(_SetLastError)
SetLastError_addr = self.asm.cpu.cast_adr_to_int(adr)
assert isinstance(self, CallBuilder32) # Windows 32-bit only
#
if save_err & rffi.RFFI_ALT_ERRNO:
lasterror = llerrno.get_alt_lasterror_offset(self.asm.cpu)
else:
lasterror = llerrno.get_rpy_lasterror_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi, callee-saved
self.save_stack_position() # => edi, callee-saved
mc.PUSH_m((tlofsreg.value, lasterror))
mc.CALL(imm(follow_jump(SetLastError_addr)))
# restore the stack position without assuming a particular
# calling convention of _SetLastError()
self.mc.MOV(esp, self.saved_stack_position_reg)
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. Most registers are free here, including the
# callee-saved ones, except 'ebx' and except the ones used to
# pass the arguments on x86-64.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
if IS_X86_32:
tmpreg = edx
else:
tmpreg = r11 # edx is used for 3rd argument
mc.MOV_rm(tmpreg.value, (tlofsreg.value, p_errno))
mc.MOV32_rm(eax.value, (tlofsreg.value, rpy_errno))
mc.MOV32_mr((tmpreg.value, 0), eax.value)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12, callee-saved
mc.MOV_rm(eax.value, (tlofsreg.value, p_errno))
mc.MOV32_mi((eax.value, 0), 0)
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers r4-r10
# never contain anything after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r9.value, r.SP.value, THREADLOCAL_ADDR_OFFSET)
self.mc.ld(r.r10.value, r.r9.value, p_errno)
self.mc.lwz(r.r10.value, r.r10.value, 0)
self.mc.stw(r.r10.value, r.r9.value, rpy_errno)
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers r8-r12
# are unused here, and registers r2-r3 never contain anything
# after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.r3.value, r.sp.value,
self.asm.saved_threadlocal_addr)
self.mc.LDR_ri(r.ip.value, r.r3.value, p_errno)
self.mc.LDR_ri(r.ip.value, r.ip.value, 0)
self.mc.STR_ri(r.ip.value, r.r3.value, rpy_errno)
def read_real_errno(self, save_err):
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Registers x11 and up
# are unused here, and registers x2-x3 never contain anything
# after the call.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.x3.value, r.sp.value,
self.asm.saved_threadlocal_addr)
self.mc.LDR_ri(r.ip0.value, r.x3.value, p_errno)
self.mc.LDR_ri(r.ip0.value, r.ip0.value, 0)
self.mc.STR_ri(r.ip0.value, r.x3.value, rpy_errno)
def read_real_errno(self, save_err):
"""This occurs after emit_raw_call() and after restore_stack_pointer().
"""
mc = self.mc
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Most registers are
# free here, including the callee-saved ones, except 'ebx'.
# The tlofs register might have been loaded earlier and is
# callee-saved, so it does not need to be reloaded.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12 (possibly reused)
mc.MOV_rm(edi.value, (tlofsreg.value, p_errno))
mc.MOV32_rm(edi.value, (edi.value, 0))
mc.MOV32_mr((tlofsreg.value, rpy_errno), edi.value)
if handle_lasterror and (
save_err &
(rffi.RFFI_SAVE_LASTERROR | rffi.RFFI_SAVE_WSALASTERROR)):
if save_err & rffi.RFFI_SAVE_LASTERROR:
from rpython.rlib.rwin32 import _GetLastError
adr = llmemory.cast_ptr_to_adr(_GetLastError)
else:
from rpython.rlib._rsocket_rffi import _WSAGetLastError
adr = llmemory.cast_ptr_to_adr(_WSAGetLastError)
GetLastError_addr = self.asm.cpu.cast_adr_to_int(adr)
assert isinstance(self, CallBuilder32) # Windows 32-bit only
#
if save_err & rffi.RFFI_ALT_ERRNO:
lasterror = llerrno.get_alt_lasterror_offset(self.asm.cpu)
else:
lasterror = llerrno.get_rpy_lasterror_offset(self.asm.cpu)
self.save_result_value(save_edx=True) # save eax/edx/xmm0
self.result_value_saved_early = True
mc.CALL(imm(follow_jump(GetLastError_addr)))
#
tlofsreg = self.get_tlofs_reg() # => esi (possibly reused)
mc.MOV32_mr((tlofsreg.value, lasterror), eax.value)
def read_real_errno(self, save_err):
"""This occurs after emit_raw_call() and after restore_stack_pointer().
"""
mc = self.mc
if save_err & rffi.RFFI_SAVE_ERRNO:
# Just after a call, read the real 'errno' and save a copy of
# it inside our thread-local '*_errno'. Most registers are
# free here, including the callee-saved ones, except 'ebx'.
# The tlofs register might have been loaded earlier and is
# callee-saved, so it does not need to be reloaded.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
tlofsreg = self.get_tlofs_reg() # => esi or r12 (possibly reused)
mc.MOV_rm(ecx.value, (tlofsreg.value, p_errno))
mc.MOV32_rm(ecx.value, (ecx.value, 0))
mc.MOV32_mr((tlofsreg.value, rpy_errno), ecx.value)
if handle_lasterror and (save_err & (rffi.RFFI_SAVE_LASTERROR |
rffi.RFFI_SAVE_WSALASTERROR)):
if save_err & rffi.RFFI_SAVE_LASTERROR:
from rpython.rlib.rwin32 import _GetLastError
adr = llmemory.cast_ptr_to_adr(_GetLastError)
else:
from rpython.rlib._rsocket_rffi import _WSAGetLastError
adr = llmemory.cast_ptr_to_adr(_WSAGetLastError)
GetLastError_addr = self.asm.cpu.cast_adr_to_int(adr)
assert isinstance(self, CallBuilder32) # Windows 32-bit only
#
if save_err & rffi.RFFI_ALT_ERRNO:
lasterror = llerrno.get_alt_lasterror_offset(self.asm.cpu)
else:
lasterror = llerrno.get_rpy_lasterror_offset(self.asm.cpu)
self.save_result_value(save_edx=True) # save eax/edx/xmm0
self.result_value_saved_early = True
mc.CALL(imm(follow_jump(GetLastError_addr)))
#
tlofsreg = self.get_tlofs_reg() # => esi (possibly reused)
mc.MOV32_mr((tlofsreg.value, lasterror), eax.value)
def write_real_errno(self, save_err):
# r11 is saved in call_releasegil_addr_and_move_real_arguments,
# thus can be used freely here!
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r11, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LGF(r.SCRATCH2, l.addr(rpy_errno, r.r11))
self.mc.LG(r.r11, l.addr(p_errno, r.r11))
self.mc.STY(r.SCRATCH2, l.addr(0, r.r11))
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r11, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LG(r.r11, l.addr(p_errno, r.r11))
self.mc.LGHI(r.SCRATCH, l.imm(0))
self.mc.STY(r.SCRATCH, l.addr(0, r.r11))
def write_real_errno(self, save_err):
# r11 is saved in call_releasegil_addr_and_move_real_arguments,
# thus can be used freely here!
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r11, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LGF(r.SCRATCH2, l.addr(rpy_errno, r.r11))
self.mc.LG(r.r11, l.addr(p_errno, r.r11))
self.mc.STY(r.SCRATCH2, l.addr(0,r.r11))
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LG(r.r11, l.addr(THREADLOCAL_ADDR_OFFSET, r.SP))
self.mc.LG(r.r11, l.addr(p_errno, r.r11))
self.mc.LGHI(r.SCRATCH, l.imm(0))
self.mc.STY(r.SCRATCH, l.addr(0,r.r11))
def write_real_errno(self, save_err):
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. A lot of registers are free here, notably
# r11 and r0.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r11.value, r.SP.value,
THREADLOCAL_ADDR_OFFSET + self.subtracted_to_sp)
self.mc.lwz(r.r0.value, r.r11.value, rpy_errno)
self.mc.ld(r.r11.value, r.r11.value, p_errno)
self.mc.stw(r.r0.value, r.r11.value, 0)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r11.value, r.SP.value,
THREADLOCAL_ADDR_OFFSET + self.subtracted_to_sp)
self.mc.ld(r.r11.value, r.r11.value, p_errno)
self.mc.li(r.r0.value, 0)
self.mc.stw(r.r0.value, r.r11.value, 0)
def write_real_errno(self, save_err):
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. A lot of registers are free here, notably
# r11 and r0.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r11.value, r.SP.value,
THREADLOCAL_ADDR_OFFSET + self.subtracted_to_sp)
self.mc.lwz(r.r0.value, r.r11.value, rpy_errno)
self.mc.ld(r.r11.value, r.r11.value, p_errno)
self.mc.stw(r.r0.value, r.r11.value, 0)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.ld(r.r11.value, r.SP.value,
THREADLOCAL_ADDR_OFFSET + self.subtracted_to_sp)
self.mc.ld(r.r11.value, r.r11.value, p_errno)
self.mc.li(r.r0.value, 0)
self.mc.stw(r.r0.value, r.r11.value, 0)
def write_real_errno(self, save_err):
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. The r0-r3 registers contain arguments to the
# future call; the r5-r7 registers contain various stuff.
# We still have r8-r12.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.r9.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip.value, r.r9.value, p_errno)
self.mc.LDR_ri(r.r9.value, r.r9.value, rpy_errno)
self.mc.STR_ri(r.r9.value, r.ip.value)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.r9.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip.value, r.r9.value, p_errno)
self.mc.MOV_ri(r.r9.value, 0)
self.mc.STR_ri(r.r9.value, r.ip.value)
def write_real_errno(self, save_err):
if save_err & rffi.RFFI_READSAVED_ERRNO:
# Just before a call, read '*_errno' and write it into the
# real 'errno'. The r0-r3 registers contain arguments to the
# future call; the r5-r8 registers contain various stuff.
# We still have r9-r12.
if save_err & rffi.RFFI_ALT_ERRNO:
rpy_errno = llerrno.get_alt_errno_offset(self.asm.cpu)
else:
rpy_errno = llerrno.get_rpy_errno_offset(self.asm.cpu)
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.r9.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip.value, r.r9.value, p_errno)
self.mc.LDR_ri(r.r9.value, r.r9.value, rpy_errno)
self.mc.STR_ri(r.r9.value, r.ip.value)
elif save_err & rffi.RFFI_ZERO_ERRNO_BEFORE:
# Same, but write zero.
p_errno = llerrno.get_p_errno_offset(self.asm.cpu)
self.mc.LDR_ri(r.r9.value, r.sp.value,
self.asm.saved_threadlocal_addr + self.current_sp)
self.mc.LDR_ri(r.ip.value, r.r9.value, p_errno)
self.mc.MOV_ri(r.r9.value, 0)
self.mc.STR_ri(r.r9.value, r.ip.value)