1006ed69f0
This commit expands the Xtensa inline assembler to support most if not all opcodes available on the ESP8266 and LX3 Xtensa cores. This is meant as a stepping stone to add inline assembler support for the ESP32 and its LX6 core, along to windowed-specific opcodes and additional opcodes that are present only on the LX7 core (ESP32-S3 and later). New opcodes being added are covered by tests, and the provided tests were expanded to also include opcodes available in the existing implementation. Given that the ESP8266 space requirements are tighter than ESP32's, certain opcodes that won't be commonly used have been put behind a define to save some space in the general use case. Signed-off-by: Alessandro Gatti <a.gatti@frob.it>
98 lines
1.5 KiB
Python
98 lines
1.5 KiB
Python
import array
|
|
|
|
# On the 8266 the generated code gets put into the IRAM segment, which is only
|
|
# word-addressable. Therefore, to test byte and halfword load/store opcodes
|
|
# some memory must be reserved in the DRAM segment.
|
|
|
|
BYTE_DATA = array.array("B", (0x11, 0x22, 0x33, 0x44))
|
|
WORD_DATA = array.array("h", (100, 200, -100, -200))
|
|
DWORD_DATA = array.array("i", (100_000, -200_000, 300_000, -400_000))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl32r() -> int:
|
|
nop()
|
|
j(CODE)
|
|
align(4)
|
|
label(DATA)
|
|
data(1, 1, 2, 3, 4, 5, 6, 7)
|
|
align(4)
|
|
label(CODE)
|
|
nop_n()
|
|
nop_n()
|
|
l32r(a2, DATA)
|
|
|
|
|
|
print(hex(tl32r()))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl32i() -> uint:
|
|
call0(ENTRY)
|
|
label(ENTRY)
|
|
l32i(a2, a0, 0)
|
|
|
|
|
|
print(hex(tl32i()))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl8ui(a2) -> uint:
|
|
mov(a3, a2)
|
|
l8ui(a2, a3, 1)
|
|
|
|
|
|
print(hex(tl8ui(BYTE_DATA)))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl16ui(a2) -> uint:
|
|
mov(a3, a2)
|
|
l16ui(a2, a3, 2)
|
|
|
|
|
|
print(tl16ui(WORD_DATA))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl16si(a2) -> int:
|
|
mov(a3, a2)
|
|
l16si(a2, a3, 6)
|
|
|
|
|
|
print(tl16si(WORD_DATA))
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def ts8i(a2, a3):
|
|
s8i(a3, a2, 1)
|
|
|
|
|
|
ts8i(BYTE_DATA, 0xFF)
|
|
print(BYTE_DATA)
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def ts16i(a2, a3):
|
|
s16i(a3, a2, 2)
|
|
|
|
|
|
ts16i(WORD_DATA, -123)
|
|
print(WORD_DATA)
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def ts32i(a2, a3) -> uint:
|
|
s32i(a3, a2, 4)
|
|
|
|
|
|
ts32i(DWORD_DATA, -123456)
|
|
print(DWORD_DATA)
|
|
|
|
|
|
@micropython.asm_xtensa
|
|
def tl32i_n(a2) -> uint:
|
|
l32i_n(a2, a2, 8)
|
|
|
|
|
|
print(tl32i_n(DWORD_DATA))
|