/* Host support routines for MinGW, for GDB, the GNU debugger.
- Copyright (C) 2006-2016 Free Software Foundation, Inc.
+ Copyright (C) 2006-2020 Free Software Foundation, Inc.
This file is part of GDB.
#include "defs.h"
#include "main.h"
#include "serial.h"
-#include "event-loop.h"
+#include "gdbsupport/event-loop.h"
-#include "gdb_select.h"
-#include "readline/readline.h"
+#include "gdbsupport/gdb_select.h"
#include <windows.h>
-/* This event is signalled whenever an asynchronous SIGINT handler
- needs to perform an action in the main thread. */
-static HANDLE sigint_event;
-
-/* When SIGINT_EVENT is signalled, gdb_select will call this
- function. */
-struct async_signal_handler *sigint_handler;
-
/* Return an absolute file name of the running GDB, if possible, or
ARGV0 if not. The return value is in malloc'ed storage. */
int num_ready;
size_t indx;
+ if (n == 0)
+ {
+ /* The MS API says that the first argument to
+ WaitForMultipleObjects cannot be zero. That's why we just
+ use a regular Sleep here. */
+ if (timeout != NULL)
+ Sleep (timeout->tv_sec * 1000 + timeout->tv_usec / 1000);
+
+ return 0;
+ }
+
num_ready = 0;
num_handles = 0;
num_scbs = 0;
}
}
- gdb_assert (num_handles < MAXIMUM_WAIT_OBJECTS);
- handles[num_handles++] = sigint_event;
+ gdb_assert (num_handles <= MAXIMUM_WAIT_OBJECTS);
event = WaitForMultipleObjects (num_handles,
handles,
}
}
- /* With multi-threaded SIGINT handling, there is a race between the
- readline signal handler and GDB. It may still be in
- rl_prep_terminal in another thread. Do not return until it is
- done; we can check the state here because we never longjmp from
- signal handlers on Windows. */
- while (RL_ISSTATE (RL_STATE_SIGHANDLER))
- Sleep (1);
+ return num_ready;
+}
- if (h == sigint_event
- || WaitForSingleObject (sigint_event, 0) == WAIT_OBJECT_0)
- {
- if (sigint_handler != NULL)
- call_async_signal_handler (sigint_handler);
+/* Map COLOR's RGB triplet, with 8 bits per component, into 16 Windows
+ console colors, where each component has just 1 bit, plus a single
+ intensity bit which affects all 3 components. */
+static int
+rgb_to_16colors (const ui_file_style::color &color)
+{
+ uint8_t rgb[3];
+ color.get_rgb (rgb);
- if (num_ready == 0)
- {
- errno = EINTR;
- return -1;
- }
+ int retval = 0;
+ for (int i = 0; i < 3; i++)
+ {
+ /* Subdivide 256 possible values of each RGB component into 3
+ regions: no color, normal color, bright color. 256 / 3 = 85,
+ but ui-style.c follows xterm and uses 92 for R and G
+ components of the bright-blue color, so we bias the divisor a
+ bit to have the bright colors between 9 and 15 identical to
+ what ui-style.c expects. */
+ int bits = rgb[i] / 93;
+ retval |= ((bits > 0) << (2 - i)) | ((bits > 1) << 3);
}
- return num_ready;
+ return retval;
}
-/* Wrapper for the body of signal handlers. On Windows systems, a
- SIGINT handler runs in its own thread. We can't longjmp from
- there, and we shouldn't even prompt the user. Delay HANDLER
- until the main thread is next in gdb_select. */
+/* Zero if not yet initialized, 1 if stdout is a console device, else -1. */
+static int mingw_console_initialized;
+
+/* Handle to stdout . */
+static HANDLE hstdout = INVALID_HANDLE_VALUE;
+
+/* Text attribute to use for normal text (the "none" pseudo-color). */
+static SHORT norm_attr;
+
+/* The most recently applied style. */
+static ui_file_style last_style;
-void
-gdb_call_async_signal_handler (struct async_signal_handler *handler,
- int immediate_p)
+/* Alternative for the libc 'fputs' which handles embedded SGR
+ sequences in support of styling. */
+
+int
+gdb_console_fputs (const char *linebuf, FILE *fstream)
{
- if (immediate_p)
- sigint_handler = handler;
- else
+ if (!mingw_console_initialized)
{
- mark_async_signal_handler (handler);
- sigint_handler = NULL;
+ hstdout = (HANDLE)_get_osfhandle (fileno (fstream));
+ DWORD cmode;
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+ if (hstdout != INVALID_HANDLE_VALUE
+ && GetConsoleMode (hstdout, &cmode) != 0
+ && GetConsoleScreenBufferInfo (hstdout, &csbi))
+ {
+ norm_attr = csbi.wAttributes;
+ mingw_console_initialized = 1;
+ }
+ else if (hstdout != INVALID_HANDLE_VALUE)
+ mingw_console_initialized = -1; /* valid, but not a console device */
}
- SetEvent (sigint_event);
-}
+ /* If our stdout is not a console device, let the default 'fputs'
+ handle the task. */
+ if (mingw_console_initialized <= 0)
+ return 0;
-/* -Wmissing-prototypes */
-extern initialize_file_ftype _initialize_mingw_hdep;
+ /* Mapping between 8 ANSI colors and Windows console attributes. */
+ static int fg_color[] = {
+ 0, /* black */
+ FOREGROUND_RED, /* red */
+ FOREGROUND_GREEN, /* green */
+ FOREGROUND_GREEN | FOREGROUND_RED, /* yellow */
+ FOREGROUND_BLUE, /* blue */
+ FOREGROUND_BLUE | FOREGROUND_RED, /* magenta */
+ FOREGROUND_BLUE | FOREGROUND_GREEN, /* cyan */
+ FOREGROUND_RED | FOREGROUND_GREEN | FOREGROUND_BLUE /* gray */
+ };
+ static int bg_color[] = {
+ 0, /* black */
+ BACKGROUND_RED, /* red */
+ BACKGROUND_GREEN, /* green */
+ BACKGROUND_GREEN | BACKGROUND_RED, /* yellow */
+ BACKGROUND_BLUE, /* blue */
+ BACKGROUND_BLUE | BACKGROUND_RED, /* magenta */
+ BACKGROUND_BLUE | BACKGROUND_GREEN, /* cyan */
+ BACKGROUND_RED | BACKGROUND_GREEN | BACKGROUND_BLUE /* gray */
+ };
+
+ ui_file_style style = last_style;
+ unsigned char c;
+ size_t n_read;
+
+ for ( ; (c = *linebuf) != 0; linebuf += n_read)
+ {
+ if (c == '\033')
+ {
+ fflush (fstream);
+ bool parsed = style.parse (linebuf, &n_read);
+ if (n_read <= 0) /* should never happen */
+ n_read = 1;
+ if (!parsed)
+ {
+ /* This means we silently swallow SGR sequences we
+ cannot parse. */
+ continue;
+ }
+ /* Colors. */
+ const ui_file_style::color &fg = style.get_foreground ();
+ const ui_file_style::color &bg = style.get_background ();
+ int fgcolor, bgcolor, bright, inverse;
+ if (fg.is_none ())
+ fgcolor = norm_attr & 15;
+ else if (fg.is_basic ())
+ fgcolor = fg_color[fg.get_value () & 15];
+ else
+ fgcolor = rgb_to_16colors (fg);
+ if (bg.is_none ())
+ bgcolor = norm_attr & (15 << 4);
+ else if (bg.is_basic ())
+ bgcolor = bg_color[bg.get_value () & 15];
+ else
+ bgcolor = rgb_to_16colors (bg) << 4;
+
+ /* Intensity. */
+ switch (style.get_intensity ())
+ {
+ case ui_file_style::NORMAL:
+ case ui_file_style::DIM:
+ bright = 0;
+ break;
+ case ui_file_style::BOLD:
+ bright = 1;
+ break;
+ default:
+ gdb_assert_not_reached ("invalid intensity");
+ }
+
+ /* Inverse video. */
+ if (style.is_reverse ())
+ inverse = 1;
+ else
+ inverse = 0;
+
+ /* Construct the attribute. */
+ if (inverse)
+ {
+ int t = fgcolor;
+ fgcolor = (bgcolor >> 4);
+ bgcolor = (t << 4);
+ }
+ if (bright)
+ fgcolor |= FOREGROUND_INTENSITY;
+
+ SHORT attr = (bgcolor & (15 << 4)) | (fgcolor & 15);
+
+ /* Apply the attribute. */
+ SetConsoleTextAttribute (hstdout, attr);
+ }
+ else
+ {
+ /* When we are about to write newline, we need to clear to
+ EOL with the normal attribute, to avoid spilling the
+ colors to the next screen line. We assume here that no
+ non-default attribute extends beyond the newline. */
+ if (c == '\n')
+ {
+ DWORD nchars;
+ COORD start_pos;
+ DWORD written;
+ CONSOLE_SCREEN_BUFFER_INFO csbi;
+
+ fflush (fstream);
+ GetConsoleScreenBufferInfo (hstdout, &csbi);
+
+ if (csbi.wAttributes != norm_attr)
+ {
+ start_pos = csbi.dwCursorPosition;
+ nchars = csbi.dwSize.X - start_pos.X;
+
+ FillConsoleOutputAttribute (hstdout, norm_attr, nchars,
+ start_pos, &written);
+ FillConsoleOutputCharacter (hstdout, ' ', nchars,
+ start_pos, &written);
+ }
+ }
+ fputc (c, fstream);
+ n_read = 1;
+ }
+ }
-void
-_initialize_mingw_hdep (void)
-{
- sigint_event = CreateEvent (0, FALSE, FALSE, 0);
+ last_style = style;
+ return 1;
}
projects / deliverable / binutils-gdb.git / blobdiff