aboutsummaryrefslogtreecommitdiff
path: root/qtmips_gui/samples
diff options
context:
space:
mode:
Diffstat (limited to 'qtmips_gui/samples')
-rw-r--r--qtmips_gui/samples/cop0-test-ia.S74
-rw-r--r--qtmips_gui/samples/simple-lw-sw-ia.S26
-rw-r--r--qtmips_gui/samples/template-os.S114
-rw-r--r--qtmips_gui/samples/template.S109
4 files changed, 323 insertions, 0 deletions
diff --git a/qtmips_gui/samples/cop0-test-ia.S b/qtmips_gui/samples/cop0-test-ia.S
new file mode 100644
index 0000000..3bfe586
--- /dev/null
+++ b/qtmips_gui/samples/cop0-test-ia.S
@@ -0,0 +1,74 @@
+.set SERIAL_PORT_BASE, 0xffffc000
+
+.set SERP_RX_ST_REG_o, 0x00
+.set SERP_RX_ST_REG_READY_m, 0x1
+.set SERP_RX_ST_REG_IE_m, 0x2
+
+.set SERP_RX_DATA_REG_o, 0x04
+
+.set SERP_TX_ST_REG_o, 0x08
+.set SERP_TX_ST_REG_READY_m, 0x1
+.set SERP_TX_ST_REG_IE_m, 0x2
+
+.set SERP_TX_DATA_REG_o, 0x0c
+
+
+.globl _start
+.set noat
+.set noreorder
+.ent _start
+
+.text
+
+_start:
+ addi $1, $0, 0x101
+ addi $2, $0, 0x102
+ synci 0($zero)
+ addi $3, $0, 0x103
+ addi $4, $0, 0x104
+ la $20, skip
+ mtc0 $20, $14, 0 // EPC
+ eret
+ addi $5, $0, 0x105
+ addi $6, $0, 0x106
+skip:
+ addi $7, $0, 0x107
+ addi $8, $0, 0x108
+ mfc0 $9, $14, 0 // EPC
+
+ break
+ mfc0 $10, $14, 0 // EPC
+
+ la $20, irq_entry - 0x180
+ mtc0 $20, $15, 1 // EBase
+
+ li $21, SERIAL_PORT_BASE
+ li $20, SERP_RX_ST_REG_IE_m
+ sw $20, SERP_RX_ST_REG_o($21)
+ li $20, 0x00000801
+ mtc0 $20, $12, 0 // Status
+
+loop: mfc0 $10, $14, 0 // EPC
+ beq $zero, $zero, loop
+ nop
+
+
+irq_entry:
+ mfc0 $26, $13, 0 // Cause
+ andi $27, $26, 0x00000800
+ bne $27, $0, rx_irq
+ nop
+ mfc0 $27, $12, 0 // Status
+ nor $26, $26, $0
+ andi $26, $26, 0x0000ff00
+ and $27, $27, $26
+ mtc0 $27, $12, 0 // Status
+ eret
+
+rx_irq:
+ li $26, SERIAL_PORT_BASE
+ lw $27, SERP_RX_DATA_REG_o($26)
+ sw $27, SERP_TX_DATA_REG_o($26)
+ eret
+
+.end _start
diff --git a/qtmips_gui/samples/simple-lw-sw-ia.S b/qtmips_gui/samples/simple-lw-sw-ia.S
new file mode 100644
index 0000000..d2c3f2c
--- /dev/null
+++ b/qtmips_gui/samples/simple-lw-sw-ia.S
@@ -0,0 +1,26 @@
+.globl _start
+.set noat
+.set noreorder
+
+.text
+
+_start:
+loop:
+ // load the word from absolute address
+ lw $2, 0x2000($0)
+ // store the word to absolute address
+ sw $2, 0x2004($0)
+
+ // stop execution wait for debugger/user
+ //break
+ // ensure that continuation does not
+ // interpret random data
+ beq $0, $0, loop
+ nop
+
+.data
+
+src_val:
+ .word 0x12345678
+dst_val:
+ .word 0
diff --git a/qtmips_gui/samples/template-os.S b/qtmips_gui/samples/template-os.S
new file mode 100644
index 0000000..6c2264f
--- /dev/null
+++ b/qtmips_gui/samples/template-os.S
@@ -0,0 +1,114 @@
+// Template file with defines of peripheral registers
+// QtMips simulator https://github.com/cvut/QtMips/
+// developed by Karel Koci and Pavel Pisa.
+//
+// template.S - example file
+//
+// (C) 2019 by Pavel Pisa
+// e-mail: pisa@cmp.felk.cvut.cz
+// homepage: http://cmp.felk.cvut.cz/~pisa
+// work: http://www.pikron.com/
+// license: public domain
+
+.globl _start
+.globl __start
+.set noreorder
+.ent _start
+
+// Serial port/terminal registers
+// There is mirror of this region at address 0xffff0000
+// to match QtSpim and Mars emulators
+
+.equ SERIAL_PORT_BASE, 0xffffc000 // base address of serial port region
+
+.equ SERP_RX_ST_REG, 0xffffc000 // Receiver status register
+.equ SERP_RX_ST_REG_o, 0x0000 // Offset of RX_ST_REG
+.equ SERP_RX_ST_REG_READY_m, 0x1 // Data byte is ready to be read
+.equ SERP_RX_ST_REG_IE_m, 0x2 // Enable Rx ready interrupt
+
+.equ SERP_RX_DATA_REG, 0xffffc004 // Received data byte in 8 LSB bits
+.equ SERP_RX_DATA_REG_o, 0x0004 // Offset of RX_DATA_REG
+
+.equ SERP_TX_ST_REG, 0xffffc008 // Transmitter status register
+.equ SERP_TX_ST_REG_o, 0x0008 // Offset of TX_ST_REG
+.equ SERP_TX_ST_REG_READY_m, 0x1 // Transmitter can accept next byte
+.equ SERP_TX_ST_REG_IE_m, 0x2 // Enable Tx ready interrupt
+
+.equ SERP_TX_DATA_REG, 0xffffc00c // Write word to send 8 LSB bits to terminal
+.equ SERP_TX_DATA_REG_o, 0x000c // Offset of TX_DATA_REG
+
+
+// Memory mapped peripheral for dial knobs input,
+// LED and RGB LEDs output designed to match
+// MZ_APO education Zynq based board developed
+// by Petr Porazil and Pavel Pisa at PiKRON.com company
+
+.equ SPILED_REG_BASE 0xffffc100 // base of SPILED port region
+
+.equ SPILED_REG_LED_LINE, 0xffffc104 // 32 bit word mapped as output
+.equ SPILED_REG_LED_LINE_o, 0x0004 // Offset of the LED_LINE
+.equ SPILED_REG_LED_RGB1, 0xffffc110 // RGB LED 1 color components
+.equ SPILED_REG_LED_RGB1_o, 0x0010 // Offset of LED_RGB1
+.equ SPILED_REG_LED_RGB2, 0xffffc114 // RGB LED 2 color components
+.equ SPILED_REG_LED_RGB2_o, 0x0014 // Offset of LED_RGB2
+.equ SPILED_REG_KNOBS_8BIT, 0xffffc124 // Three 8 bit knob values
+.equ SPILED_REG_KNOBS_8BIT_o, 0x0024 // Offset of KNOBS_8BIT
+
+// The simple 16-bit per pixel (RGB565) frame-buffer
+// display size is 480 x 320 pixel
+// Pixel format RGB565 expect
+// bits 11 .. 15 red component
+// bits 5 .. 10 green component
+// bits 0 .. 4 blue component
+.equ LCD_FB_START, 0xffe00000
+.equ LCD_FB_END, 0xffe4afff
+
+// Mapping of interrupts
+// Irq number Cause/Status Bit Source
+// 2 / HW0 10 Serial port ready to accept character to Tx
+// 3 / HW1 11 There is received character ready to be read
+// 7 / HW5 15 Counter reached value in Compare register
+
+
+// Linux kernel compatible system calls subset
+
+.equ __NR_exit, 4001 // void exit(int status)
+.equ __NR_read, 4003 // ssize_t read(int fd, void *buf, size_t count)
+.equ __NR_write, 4004 // ssize_t write(int fd, const void *buf, size_t count)
+.equ __NR_close, 4006 // int close(int fd)
+.equ __NR_open, 4005 // int open(const char *pathname, int flags, mode_t mode)
+.equ __NR_brk, 4045 // void * brk(void *addr)
+.equ __NR_truncate, 4092 // int ftruncate(int fd, off_t length)
+.equ __NR_readv, 4145 // ssize_t readv(int fd, const struct iovec *iov, int iovcnt)
+.equ __NR_writev, 4146 // ssize_t writev(int fd, const struct iovec *iov, int iovcnt)
+.equ __NR_set_thread_area, 4283 // int set_thread_area(unsigned long addr)
+
+// Original MIPS start address after reset
+.org 0x80020000
+
+.text
+
+__start:
+_start:
+
+ addi $v0, $zero, __NR_write
+ addi $a0, $zero, 1
+ la $a1, text_1
+ addi $a2, $zero, text_1_e - text_1
+ syscall
+
+ addi $v0, $zero, __NR_exit
+ addi $a0, $zero, 0
+
+final: break
+ beq $zero, $zero, final
+ nop
+
+.end _start
+
+.data
+
+data_1: .word 1, 2, 3, 4
+
+text_1: .ascii "Hello word.\n" // store ASCII text, no termination
+text_1_e:
diff --git a/qtmips_gui/samples/template.S b/qtmips_gui/samples/template.S
new file mode 100644
index 0000000..58de4a3
--- /dev/null
+++ b/qtmips_gui/samples/template.S
@@ -0,0 +1,109 @@
+// Template file with defines of peripheral registers
+// QtMips simulator https://github.com/cvut/QtMips/
+// developed by Karel Koci and Pavel Pisa.
+//
+// template.S - example file
+//
+// (C) 2019 by Pavel Pisa
+// e-mail: pisa@cmp.felk.cvut.cz
+// homepage: http://cmp.felk.cvut.cz/~pisa
+// work: http://www.pikron.com/
+// license: public domain
+
+.globl _start
+.globl __start
+.set noreorder
+.ent _start
+
+// Serial port/terminal registers
+// There is mirror of this region at address 0xffff0000
+// to match QtSpim and Mars emulators
+
+.equ SERIAL_PORT_BASE, 0xffffc000 // base address of serial port region
+
+.equ SERP_RX_ST_REG, 0xffffc000 // Receiver status register
+.equ SERP_RX_ST_REG_o, 0x0000 // Offset of RX_ST_REG
+.equ SERP_RX_ST_REG_READY_m, 0x1 // Data byte is ready to be read
+.equ SERP_RX_ST_REG_IE_m, 0x2 // Enable Rx ready interrupt
+
+.equ SERP_RX_DATA_REG, 0xffffc004 // Received data byte in 8 LSB bits
+.equ SERP_RX_DATA_REG_o, 0x0004 // Offset of RX_DATA_REG
+
+.equ SERP_TX_ST_REG, 0xffffc008 // Transmitter status register
+.equ SERP_TX_ST_REG_o, 0x0008 // Offset of TX_ST_REG
+.equ SERP_TX_ST_REG_READY_m, 0x1 // Transmitter can accept next byte
+.equ SERP_TX_ST_REG_IE_m, 0x2 // Enable Tx ready interrupt
+
+.equ SERP_TX_DATA_REG, 0xffffc00c // Write word to send 8 LSB bits to terminal
+.equ SERP_TX_DATA_REG_o, 0x000c // Offset of TX_DATA_REG
+
+
+// Memory mapped peripheral for dial knobs input,
+// LED and RGB LEDs output designed to match
+// MZ_APO education Zynq based board developed
+// by Petr Porazil and Pavel Pisa at PiKRON.com company
+
+.equ SPILED_REG_BASE 0xffffc100 // base of SPILED port region
+
+.equ SPILED_REG_LED_LINE, 0xffffc104 // 32 bit word mapped as output
+.equ SPILED_REG_LED_LINE_o, 0x0004 // Offset of the LED_LINE
+.equ SPILED_REG_LED_RGB1, 0xffffc110 // RGB LED 1 color components
+.equ SPILED_REG_LED_RGB1_o, 0x0010 // Offset of LED_RGB1
+.equ SPILED_REG_LED_RGB2, 0xffffc114 // RGB LED 2 color components
+.equ SPILED_REG_LED_RGB2_o, 0x0014 // Offset of LED_RGB2
+.equ SPILED_REG_KNOBS_8BIT, 0xffffc124 // Three 8 bit knob values
+.equ SPILED_REG_KNOBS_8BIT_o, 0x0024 // Offset of KNOBS_8BIT
+
+// The simple 16-bit per pixel (RGB565) frame-buffer
+// display size is 480 x 320 pixel
+// Pixel format RGB565 expect
+// bits 11 .. 15 red component
+// bits 5 .. 10 green component
+// bits 0 .. 4 blue component
+.equ LCD_FB_START, 0xffe00000
+.equ LCD_FB_END, 0xffe4afff
+
+// Mapping of interrupts
+// Irq number Cause/Status Bit Source
+// 2 / HW0 10 Serial port ready to accept character to Tx
+// 3 / HW1 11 There is received character ready to be read
+// 7 / HW5 15 Counter reached value in Compare register
+
+// Original MIPS start address after reset
+.org 0x80020000
+
+.text
+
+__start:
+_start:
+
+loop: la $a0, SERIAL_PORT_BASE // load base address of serial port
+ // it is pseodooperation lui $a0, 0xffff ; ori $a0, $a0, 0xc000
+ // can be optimized as addi $a0, $zero, 0xffffc000-0x100000000
+ // in this particular case
+
+ la $a1, text_1 // load address of text
+
+next_char:lb $t1, 0($a1) // load one byte after another
+ beq $t1, $zero, end_char // is this the terminal zero byte
+ addi $a1, $a1, 1 // move pointer to next text byte
+tx_busy: lw $t0, SERP_TX_ST_REG_o($a0) // read status of transmitter
+ andi $t0, $t0, SERP_TX_ST_REG_READY_m // mask ready bit
+ beq $t0, $zero, tx_busy // if not ready wait for ready condition
+ nop // fill branch instruction delay slot
+ sw $t1,SERP_TX_DATA_REG_o($a0) // write byte to Tx data register
+ beq $zero, $zero, next_char // unconditional branch to process next byte
+ nop // fill delay slot
+
+end_char: break // stop continuous execution
+ // request developer interaction
+ beq $zero, $zero, loop
+ nop // fill delay slot
+
+.end _start
+
+.data
+
+data_1: .word 1, 2, 3, 4 // example how to fill data words
+
+text_1: .asciz "Hello word.\n" // store zero terminated ASCII text
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-22 09:47:58 +0000