def _synthesize_epilogue(self):
"""
Save the values in some registers (see PPC ABI p41)
"""
# Reset the epilogue
self._epilogue = [self.lbl_epilogue]
# Restore vrsave
self._epilogue.append(ppc.mtvrsave(self._vrsave))
# Get the list of saved registers
save_gp = [
reg for reg in self._register_files[GPRegister].get_used()
if reg in gp_save
]
save_fp = [
reg for reg in self._register_files[FPRegister].get_used()
if reg in fp_save
]
save_vx = [
reg for reg in self._register_files[VMXRegister].get_used()
if reg in vx_save
]
r_addr = GPRegister(13, None) # Only available volatile register
r_idx = GPRegister(14,
None) # Non-volatile; safe to use before restoring
self._load_word(self._epilogue, r_addr,
self._saved_vx_registers.buffer_info()[0])
for i, reg in enumerate(save_vx):
#print 'restoring vx:', reg, r_addr, i * WORD_SIZE * 4
self._load_word(self._epilogue, r_idx, i * WORD_SIZE * 4)
self._epilogue.append(
vmx.lvx(reg, r_idx, r_addr, ignore_active=True))
self._load_word(self._epilogue, r_addr,
self._saved_fp_registers.buffer_info()[0])
for i, reg in enumerate(save_fp):
# print 'restoring fp:', reg, r_addr, i * WORD_SIZE
self._epilogue.append(
ppc.lfd(reg, r_addr, i * WORD_SIZE * 2, ignore_active=True))
self._load_word(self._epilogue, r_addr,
self._saved_gp_registers.buffer_info()[0])
for i, reg in enumerate(save_gp):
# print 'restoring gp:', reg, r_addr, i * WORD_SIZE
self._epilogue.append(
ppc.lwz(reg, r_addr, i * WORD_SIZE, ignore_active=True))
self._epilogue.append(ppc.blr(ignore_active=True))
return
def _synthesize_epilogue(self):
"""
Save the values in some registers (see PPC ABI p41)
"""
# Reset the epilogue
self._epilogue = [self.lbl_epilogue]
r_addr = GPRegister(13) # Only available volatile register
r_idx = GPRegister(14) # Non-volatile; safe to use before restoring
# Get the list of saved registers
save_gp = [r for r in self._used_registers[GPRegister] if r in gp_save]
save_fp = [r for r in self._used_registers[FPRegister] if r in fp_save]
if self._enable_vmx:
save_vx = [
r for r in self._used_registers[VMXRegister] if r in vx_save
]
if len(save_vx) > 0:
# Restore vrsave
self._epilogue.append(
ppc.mtvrsave(self._vrsave, ignore_active=True))
# Restore saved VMX registers
self._load_word(self._epilogue, r_addr,
self._saved_vx_registers.buffer_info()[0])
for i, reg in enumerate(save_vx):
self._load_word(self._epilogue, r_idx, i * WORD_SIZE * 4)
self._epilogue.append(
vmx.lvx(reg, r_idx, r_addr, ignore_active=True))
if len(save_fp) > 0:
# Restore saved FP registers
self._load_word(self._epilogue, r_addr,
self._saved_fp_registers.buffer_info()[0])
for i, reg in enumerate(save_fp):
self._epilogue.append(
ppc.lfd(reg, r_addr, i * WORD_SIZE * 2,
ignore_active=True))
if len(save_gp) > 0:
# Restore saved GP registers
self._load_word(self._epilogue, r_addr,
self._saved_gp_registers.buffer_info()[0])
for i, reg in enumerate(save_gp):
self._epilogue.append(
ppc.lwz(reg, r_addr, i * WORD_SIZE, ignore_active=True))
self._epilogue.append(ppc.blr(ignore_active=True))
return
def load_vector(code, v_target, addr):
"""
Generate the code to load a vector into a vector register.
"""
r_temp = code.prgm.acquire_register()
load_word(code, r_temp, addr)
code.add(vmx.lvx(v_target, 0, r_temp))
code.prgm.release_register(r_temp)
return
def load_vector(code, v_target, addr): """ Generate the code to load a vector into a vector register. """ r_temp = code.prgm.acquire_register() load_word(code, r_temp, addr) code.add(vmx.lvx(v_target, 0, r_temp)) code.prgm.release_register(r_temp) return
def _synthesize_epilogue(self):
"""
Save the values in some registers (see PPC ABI p41)
"""
# Reset the epilogue
self._epilogue = [self.lbl_epilogue]
r_addr = GPRegister(13) # Only available volatile register
r_idx = GPRegister(14) # Non-volatile; safe to use before restoring
# Get the list of saved registers
save_gp = [r for r in self._used_registers[GPRegister] if r in gp_save]
save_fp = [r for r in self._used_registers[FPRegister] if r in fp_save]
if self._enable_vmx:
save_vx = [r for r in self._used_registers[VMXRegister] if r in vx_save]
if len(save_vx) > 0:
# Restore vrsave
self._epilogue.append(ppc.mtvrsave(self._vrsave, ignore_active = True))
# Restore saved VMX registers
self._load_word(self._epilogue, r_addr,
self._saved_vx_registers.buffer_info()[0])
for i, reg in enumerate(save_vx):
self._load_word(self._epilogue, r_idx, i * WORD_SIZE * 4)
self._epilogue.append(
vmx.lvx(reg, r_idx, r_addr, ignore_active = True))
if len(save_fp) > 0:
# Restore saved FP registers
self._load_word(self._epilogue, r_addr,
self._saved_fp_registers.buffer_info()[0])
for i, reg in enumerate(save_fp):
self._epilogue.append(
ppc.lfd(reg, r_addr, i * WORD_SIZE * 2, ignore_active = True))
if len(save_gp) > 0:
# Restore saved GP registers
self._load_word(self._epilogue, r_addr,
self._saved_gp_registers.buffer_info()[0])
for i, reg in enumerate(save_gp):
self._epilogue.append(
ppc.lwz(reg, r_addr, i * WORD_SIZE, ignore_active = True))
self._epilogue.append(ppc.blr(ignore_active = True))
return
def load_current(self): return self.code.add(vmx.lvx(self.r_current, self.r_count, self.r_addr))
