diff options
Diffstat (limited to 'qtmips_osemu/ossyscall.cpp')
| -rw-r--r-- | qtmips_osemu/ossyscall.cpp | 34 |
1 files changed, 32 insertions, 2 deletions
diff --git a/qtmips_osemu/ossyscall.cpp b/qtmips_osemu/ossyscall.cpp index 584a011..e030076 100644 --- a/qtmips_osemu/ossyscall.cpp +++ b/qtmips_osemu/ossyscall.cpp @@ -63,7 +63,7 @@ static const mips_syscall_desc_t mips_syscall_args[] = { MIPS_SYS(sys_exit , 1, syscall_default_handler) MIPS_SYS(sys_fork , 0, syscall_default_handler) MIPS_SYS(sys_read , 3, syscall_default_handler) - MIPS_SYS(sys_write , 3, syscall_default_handler) + MIPS_SYS(sys_write , 3, do_sys_write) MIPS_SYS(sys_open , 3, syscall_default_handler) /* 4005 */ MIPS_SYS(sys_close , 1, syscall_default_handler) MIPS_SYS(sys_waitpid , 3, syscall_default_handler) @@ -440,6 +440,7 @@ bool OsSyscallExceptionHandler::handle_exception(Core *core, Registers *regs, MemoryAccess *mem_data = core->get_mem_data(); MemoryAccess *mem_program = core->get_mem_program(); + (void)mem_program; #if 1 printf("Exception cause %d instruction PC 0x%08lx next PC 0x%08lx jump branch PC 0x%08lx " @@ -554,10 +555,39 @@ int OsSyscallExceptionHandler::do_sys_writev(std::uint32_t &result, Core *core, std::uint32_t iov_len = mem->read_word(iov + 4); iov += 8; for (std::uint32_t i = 0; i < iov_len; i++) { - printf("%c", mem->read_byte(iov_base++)); + int ch = mem->read_byte(iov_base++); + printf("%c", ch); + emit char_written(fd, ch); } result += iov_len; } return 0; } + +// ssize_t write(int fd, const void *buf, size_t count); +int OsSyscallExceptionHandler::do_sys_write(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; + int fd = a1; + std::uint32_t buf = a2; + int size = a3; + MemoryAccess *mem = core->get_mem_data(); + + printf("sys_write to fd %d\n", fd); + + result += size; + while (size-- > 0) { + int ch = mem->read_byte(buf++); + printf("%c", ch); + emit char_written(fd, ch); + } + + return 0; +} |