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-rw-r--r--qtmips_osemu/ossyscall.cpp150
-rw-r--r--qtmips_osemu/ossyscall.h12
2 files changed, 157 insertions, 5 deletions
diff --git a/qtmips_osemu/ossyscall.cpp b/qtmips_osemu/ossyscall.cpp
index 84b0870..5ac6340 100644
--- a/qtmips_osemu/ossyscall.cpp
+++ b/qtmips_osemu/ossyscall.cpp
@@ -926,6 +926,29 @@ static const mips_syscall_desc_t mips_syscall_args[] = {
const unsigned mips_syscall_args_size =
sizeof(mips_syscall_args)/sizeof(*mips_syscall_args);
+static const mips_syscall_desc_t spim_syscall_args[] = {
+ MIPS_SYS(print_integer, 1, do_spim_print_integer) /* 1 */
+ MIPS_SYS(print_float, 1, syscall_default_handler) /* 2 */
+ MIPS_SYS(print_double, 1, syscall_default_handler) /* 3 */
+ MIPS_SYS(print_string, 1, do_spim_print_string) /* 4 */
+ MIPS_SYS(read_integer, 0, syscall_default_handler) /* 5 */
+ MIPS_SYS(read_float, 0, syscall_default_handler) /* 6 */
+ MIPS_SYS(read_double, 0, syscall_default_handler) /* 7 */
+ MIPS_SYS(read_string, 0, do_spim_read_string) /* 8 */
+ MIPS_SYS(sbrk, 0, do_spim_sbrk) /* 9 */
+ MIPS_SYS(exit, 1, do_spim_exit) /* 10 */
+ MIPS_SYS(print_character, 1, do_spim_print_character)/* 11 */
+ MIPS_SYS(read_character, 1, do_spim_read_character) /* 12 */
+ MIPS_SYS(open_file, 3, do_sys_open) /* 13 */
+ MIPS_SYS(read_from_file, 3, do_sys_read) /* 14 */
+ MIPS_SYS(read_to_file, 3, do_sys_write) /* 15 */
+ MIPS_SYS(close_file, 3, do_sys_close) /* 16 */
+ MIPS_SYS(exit, 1, do_sys_exit) /* 17 */
+};
+
+const unsigned spim_syscall_args_size =
+ sizeof(spim_syscall_args)/sizeof(*spim_syscall_args);
+
OsSyscallExceptionHandler::OsSyscallExceptionHandler(bool known_syscall_stop,
bool unknown_syscall_stop,
QString fs_root) :
@@ -964,12 +987,16 @@ bool OsSyscallExceptionHandler::handle_exception(Core *core, Registers *regs,
(void)jump_branch_pc; (void)in_delay_slot;
#endif
- if (syscall_num < 4000 || syscall_num >= 4000 + mips_syscall_args_size)
- throw QTMIPS_EXCEPTION(SyscallUnknown, "System call number unknown ", QString::number(syscall_num));
- syscall_num -= 4000;
+ if (syscall_num >= 1 && syscall_num < 1 + spim_syscall_args_size) {
+ sdesc = &spim_syscall_args[syscall_num - 1];
+ } else if (syscall_num >= 4000 && syscall_num < 4000 + mips_syscall_args_size) {
+ syscall_num -= 4000;
+ sdesc = &mips_syscall_args[syscall_num];
+ } else {
+ throw QTMIPS_EXCEPTION(SyscallUnknown, "System call number unknown ", QString::number(syscall_num));
+ }
- sdesc = &mips_syscall_args[syscall_num];
a1 = regs->read_gp(4);
a2 = regs->read_gp(5);
a3 = regs->read_gp(6);
@@ -1515,3 +1542,118 @@ int OsSyscallExceptionHandler::do_sys_mmap2(std::uint32_t &result, Core *core,
return 0;
}
+
+int OsSyscallExceptionHandler::do_spim_print_integer(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ result = 0;
+
+ QString str = QString::number(a1);
+ QVector<std::uint8_t> data;
+ foreach (QChar ch, str)
+ data.append(ch.toLatin1());
+ write_io(1, data, data.size());
+
+ return 0;
+}
+
+int OsSyscallExceptionHandler::do_spim_print_string(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ std::uint32_t str_ptr = a1;
+ QVector<std::uint8_t> data;
+ MemoryAccess *mem = core->get_mem_data();
+
+ while (true) {
+ std::uint8_t ch;
+ ch = mem->read_byte(str_ptr++);
+ if (ch == 0)
+ break;
+ data.append(ch);
+ }
+ write_io(1, data, data.size());
+ result = 0;
+
+ return 0;
+}
+
+int OsSyscallExceptionHandler::do_spim_read_string(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ QVector<std::uint8_t> data;
+ read_io(1, data, (std::uint32_t)data.size(), false);
+
+ result = 0;
+
+ return 0;
+}
+
+int OsSyscallExceptionHandler::do_spim_sbrk(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ std::uint32_t increment = a1;
+ increment = (increment + 15) & ~15;;
+ brk_limit = (brk_limit + 15) & ~15;;
+ result = brk_limit;
+ brk_limit += increment;
+
+ return 0;
+}
+
+int OsSyscallExceptionHandler::do_spim_exit(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ return do_sys_exit(result, core, syscall_num, 0, a2, a3, a4, a5, a6, a7, a8);
+}
+
+int OsSyscallExceptionHandler::do_spim_print_character(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ result = 0;
+
+ return 0;
+}
+
+int OsSyscallExceptionHandler::do_spim_read_character(std::uint32_t &result, Core *core,
+ std::uint32_t syscall_num,
+ std::uint32_t a1, std::uint32_t a2, std::uint32_t a3,
+ std::uint32_t a4, std::uint32_t a5, std::uint32_t a6,
+ std::uint32_t a7, std::uint32_t a8) {
+ (void)core; (void)syscall_num;
+ (void)a1; (void)a2; (void)a3; (void)a4; (void)a5; (void)a6; (void)a7; (void)a8;
+
+ result = 0;
+
+
+ return 0;
+}
diff --git a/qtmips_osemu/ossyscall.h b/qtmips_osemu/ossyscall.h
index 2f8f54a..7293bcf 100644
--- a/qtmips_osemu/ossyscall.h
+++ b/qtmips_osemu/ossyscall.h
@@ -77,6 +77,15 @@ public:
OSSYCALL_HANDLER_DECLARE(do_sys_ftruncate);
OSSYCALL_HANDLER_DECLARE(do_sys_brk);
OSSYCALL_HANDLER_DECLARE(do_sys_mmap2);
+
+ OSSYCALL_HANDLER_DECLARE(do_spim_print_integer);
+ OSSYCALL_HANDLER_DECLARE(do_spim_print_string);
+ OSSYCALL_HANDLER_DECLARE(do_spim_read_string);
+ OSSYCALL_HANDLER_DECLARE(do_spim_sbrk);
+ OSSYCALL_HANDLER_DECLARE(do_spim_exit);
+ OSSYCALL_HANDLER_DECLARE(do_spim_print_character);
+ OSSYCALL_HANDLER_DECLARE(do_spim_read_character);
+
signals:
void char_written(int fd, unsigned int val);
void rx_byte_pool(int fd, unsigned int &data, bool &available);
@@ -91,7 +100,8 @@ private:
std::int32_t read_mem(machine::MemoryAccess *mem, std::uint32_t addr,
QVector<std::uint8_t> &data, std::uint32_t count);
std::int32_t write_io(int fd, const QVector<std::uint8_t> &data, std::uint32_t count);
- std::int32_t read_io(int fd, QVector<std::uint8_t> &data, std::uint32_t count, bool add_nl_at_eof);
+ std::int32_t read_io(int fd, QVector<std::uint8_t> &data, std::uint32_t count,
+ bool add_nl_at_eof = false);
int allocate_fd(int val = FD_UNUSED);
int file_open(QString fname, int flags, int mode);
int targetfd_to_fd(int targetfd);
generated by cgit v1.2.3 (git 2.25.1) at 2025-10-31 16:22:23 +0000