#include "screenhack.h"
#include "simulator.h"
+// TODO: What should I do about this define? I would like to be able to specify the address so I can do things like display the code itself if nothign interesting happens in RAM.
+#define HEAP_START_ADDRESS 0x20000000
+
/* -------------------------------------------------------------------------- */
/* Front Panel Layout */
/* -------------------------------------------------------------------------- */
/* Helper Functions */
/* -------------------------------------------------------------------------- */
+// Fill in boilerplate when selecting colors.
+#define COLOR(X) &color_list[nedsim->color_index].X
+
// Set foreground color for the current graphics context.
static void
set_color(struct NEDsim * nedsim, struct color_rgb * color)
XSetForeground(nedsim->dpy, nedsim->gc, temp.pixel);
}
-// TODO: Make this a lot faster.
-// Set font size to fill 'size' cells vertically, minus space for border and padding.
+// Set font size to fill 'size' cells vertically, minus space for border and
+// padding. There is probably a better way to do this. The current method is
+// horribly slow. Call this function as few times as possible.
static void
set_font_size(struct NEDsim * nedsim, int size)
{
const char * font_size_prefix = "-*-helvetica-*-r-*-*-";
const char * font_size_suffix = "-*-*-*-*-*-*-*";
- size_t buffer_size = strlen(font_size_prefix) + strlen(font_size_suffix) + 100; // '100' since nobody needs font with size in 'points' greater than 100 decimal digits long.
+ // In the buffer, we reserve 100 DIGITS for the font size integer.
+ size_t buffer_size = strlen(font_size_prefix) + strlen(font_size_suffix) + 100;
char * font_full_name = malloc(buffer_size);
- int font_size_in_points = 2; // Start with a 2 pt font and work our way up.
+ // Start with a 2pt font and work our way up.
+ int font_size_in_points = 2;
while (1) {
// Load the font.
}
// When specifying the rectangular area to draw, all coordinates and sizes are
-// in units of 'cells'. Also, be aware that this function alters the
-// foreground color.
+// in units of 'cells'.
static void
-draw_rect_area(struct NEDsim * nedsim, size_t x_origin, size_t y_origin, size_t x_size, size_t y_size,
+draw_rect_area(struct NEDsim * nedsim, struct color_rgb * color,
+ size_t x_origin, size_t y_origin, size_t x_size, size_t y_size,
Bool bord_top, Bool bord_bottom, Bool bord_left, Bool bord_right)
{
// First fill in the rectangular area...
y_origin += nedsim->origin_y_offset;
x_size *= nedsim->cell_size;
y_size *= nedsim->cell_size;
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, x_origin, y_origin, x_size, y_size);
+ set_color(nedsim, color);
+ XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
+ x_origin, y_origin, x_size, y_size
+ );
// ...then give it a border, if requested.
- set_color(nedsim, &color_list[nedsim->color_index].border);
+ set_color(nedsim, COLOR(border));
if (bord_top) {
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- x_origin, y_origin, x_size, nedsim->border_size);
+ x_origin, y_origin,
+ x_size, nedsim->border_size
+ );
}
if (bord_bottom) {
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- x_origin, (y_origin + y_size - nedsim->border_size), x_size, nedsim->border_size);
+ x_origin, (y_origin + y_size - nedsim->border_size),
+ x_size, nedsim->border_size
+ );
}
if (bord_left) {
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- x_origin, y_origin, nedsim->border_size, y_size);
+ x_origin, y_origin,
+ nedsim->border_size, y_size
+ );
}
if (bord_right) {
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- (x_origin + x_size - nedsim->border_size), y_origin, nedsim->border_size, y_size);
+ (x_origin + x_size - nedsim->border_size), y_origin,
+ nedsim->border_size, y_size
+ );
}
}
// Draws filled circle in a square area with upper left corner at x,y. When
// specifying the location and size to draw, all values are in units of
-// 'cells'. Also, be aware that this function alters the foreground color.
+// 'cells'.
static void
draw_circular_area(struct NEDsim * nedsim, size_t x, size_t y, double diameter)
{
// Requires that set_font_size() has been run at least once. All values are in
// units of 'cells'.
static void
-draw_text(struct NEDsim * nedsim, const char * text, int x_origin, int y_origin, int x_size, int y_size, Bool horizontally_center)
+draw_text(struct NEDsim * nedsim, const char * text,
+ int x_origin, int y_origin, int x_size, int y_size, Bool horizontally_center)
{
- set_color(nedsim, &color_list[nedsim->color_index].text);
+ set_color(nedsim, COLOR(text));
int text_x_size, text_y_size;
get_text_size(nedsim, text, &text_x_size, &text_y_size);
int local_x_offset = 0;
if (horizontally_center) local_x_offset = ((x_size * nedsim->cell_size) - text_x_size) / 2;
- XDrawString(nedsim->dpy, nedsim->panel, nedsim->gc, (x_origin * nedsim->cell_size + nedsim->origin_x_offset + local_x_offset),
- ((y_origin + y_size) * nedsim->cell_size + nedsim->origin_y_offset - local_y_offset), text, strlen(text));
+ XDrawString(nedsim->dpy, nedsim->panel, nedsim->gc,
+ (x_origin * nedsim->cell_size + nedsim->origin_x_offset + local_x_offset),
+ ((y_origin + y_size) * nedsim->cell_size + nedsim->origin_y_offset - local_y_offset),
+ text, strlen(text)
+ );
+}
+
+/* -------------------------------------------------------------------------- */
+/* Dynamic Panel Functions */
+/* -------------------------------------------------------------------------- */
+
+// Draw the 32 lights corresponding to 'word' at coordinates ('x','y').
+// Note that this function ONLY draws the lights and is used each frame for
+// updating the panel. To draw the wordline area itself, use draw_wordline().
+static void
+draw_wordline_lights(struct NEDsim * nedsim, uint32_t word, int x, int y)
+{
+ for (int i = 0; i < WORDLINE_WIDTH; i++) {
+ if (word & (1<<(WORDLINE_WIDTH-1-i))) {
+ set_color(nedsim, COLOR(light_on));
+ } else {
+ set_color(nedsim, COLOR(light_off));
+ }
+ draw_circular_area(nedsim, x+i, y, WORDLINE_HEIGHT);
+ }
+}
+
+// After the static front panel has been drawn at least once, this function
+// updates all the dynamic parts of the panel (lights + text values) and is
+// called every frame.
+static void
+update_display(struct NEDsim * nedsim)
+{
+ // Draw the halt indicator.
+ if (nedsim->nedstate->halted) {
+ set_color(nedsim, COLOR(error_on));
+ } else {
+ set_color(nedsim, COLOR(error_off));
+ }
+ draw_circular_area(nedsim, HALT_X_OFFSET, HALT_Y_OFFSET, HALT_WIDTH);
+
+ // Draw the PSW "N" light.
+ if (nedsim->nedstate->active_thread->psw->negative) {
+ set_color(nedsim, COLOR(light_on));
+ } else {
+ set_color(nedsim, COLOR(light_off));
+ }
+ draw_circular_area(nedsim,
+ PSW_N_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT
+ );
+
+ // Draw the PSW "Z" light.
+ if (nedsim->nedstate->active_thread->psw->zero) {
+ set_color(nedsim, COLOR(light_on));
+ } else {
+ set_color(nedsim, COLOR(light_off));
+ }
+ draw_circular_area(nedsim,
+ PSW_Z_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT
+ );
+
+
+ // Draw the SC.
+ for (int i = 0; i < SC_WIDTH; i++) {
+ if ((SC_WIDTH-1-i) == nedsim->nedstate->active_thread->sc) {
+ set_color(nedsim, COLOR(light_on));
+ } else {
+ set_color(nedsim, COLOR(light_off));
+ }
+ draw_circular_area(nedsim,
+ SC_X_OFFSET+i, SC_Y_OFFSET+SC_LABEL_HEIGHT, SC_LIGHT_HEIGHT
+ );
+ }
+
+ // Draw the PC.
+ draw_wordline_lights(nedsim, nedsim->nedstate->active_thread->pc,
+ PC_X_OFFSET, PC_Y_OFFSET+PC_LABEL_HEIGHT
+ );
+
+ // Draw the stack lights.
+ int64_t top_of_stack = ((int64_t)nedsim->nedstate->active_thread->sp) - 1;
+ for (int i = 0; i < nedsim->num_data_rows; i++) {
+ if ((top_of_stack-i) >= 0) {
+ draw_wordline_lights(nedsim,
+ nedsim->nedstate->active_thread->stack[top_of_stack-i],
+ STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i
+ );
+ } else {
+ draw_wordline_lights(nedsim, 0,
+ STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i
+ );
+ }
+ }
+
+ // Draw the stack size in text.
+ draw_rect_area(nedsim, COLOR(tertiary),
+ STACK_X_OFFSET+(STACK_WIDTH/2), STACK_Y_OFFSET,
+ STACK_WIDTH/2, STACK_LABEL_HEIGHT,
+ True, True, False, False
+ );
+ char stack_size[11];
+ snprintf(stack_size, sizeof(stack_size),"0x%08X", nedsim->nedstate->active_thread->sp);
+ draw_text(nedsim, stack_size,
+ (STACK_X_OFFSET+(STACK_WIDTH/2)+1), STACK_Y_OFFSET,
+ STACK_WIDTH, STACK_LABEL_HEIGHT, False
+ );
+
+ // Draw the heap lights.
+ for (int i = 0; i < nedsim->num_data_rows; i++) {
+ draw_wordline_lights(nedsim,
+ ram_r_word(nedsim->nedstate, HEAP_START_ADDRESS+(i*BPW)),
+ HEAP_X_OFFSET, HEAP_Y_OFFSET+HEAP_LABEL_HEIGHT+i
+ );
+ }
}
+/* -------------------------------------------------------------------------- */
+/* Static Panel Functions */
+/* -------------------------------------------------------------------------- */
+
// Draws the panel itself. Not the lights/labels/etc, but the flat sheet of
// metal that is the front panel.
static void
draw_panel(struct NEDsim * nedsim)
{
+ size_t overall_height_in_cells = HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS;
+
// Draw background color over entire window.
- set_color(nedsim, &color_list[nedsim->color_index].panel_bg);
+ set_color(nedsim, COLOR(panel_bg));
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, 0, 0, nedsim->dpy_width, nedsim->dpy_height);
// Draw NED panel in foreground color.
- set_color(nedsim, &color_list[nedsim->color_index].panel_fg);
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- nedsim->origin_x_offset,
- nedsim->origin_y_offset,
- nedsim->cell_size * OVERALL_WIDTH_IN_CELLS,
- nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS)
+ draw_rect_area(nedsim, COLOR(panel_fg),
+ 0, 0,
+ OVERALL_WIDTH_IN_CELLS, overall_height_in_cells,
+ False, False, False, False
);
// Give the panel rounded corners by first deleting the four right-angle corners...
- set_color(nedsim, &color_list[nedsim->color_index].panel_bg);
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- nedsim->origin_x_offset,
- nedsim->origin_y_offset,
- nedsim->cell_size,
- nedsim->cell_size
+ draw_rect_area(nedsim, COLOR(panel_bg),
+ 0, 0,
+ 1, 1,
+ False, False, False, False
);
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-1)),
- nedsim->origin_y_offset,
- nedsim->cell_size,
- nedsim->cell_size
+ draw_rect_area(nedsim, COLOR(panel_bg),
+ OVERALL_WIDTH_IN_CELLS-1, 0,
+ 1, 1,
+ False, False, False, False
);
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- nedsim->origin_x_offset,
- nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 1)),
- nedsim->cell_size,
- nedsim->cell_size
+ draw_rect_area(nedsim, COLOR(panel_bg),
+ 0, overall_height_in_cells-1,
+ 1, 1,
+ False, False, False, False
);
- XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc,
- nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-1)),
- nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 1)),
- nedsim->cell_size,
- nedsim->cell_size
+ draw_rect_area(nedsim, COLOR(panel_bg),
+ OVERALL_WIDTH_IN_CELLS-1, overall_height_in_cells-1,
+ 1, 1,
+ False, False, False, False
);
// ...and then replacing them with filled arcs, forming rounded corners.
- set_color(nedsim, &color_list[nedsim->color_index].panel_fg);
+ // Note that we use XFillArc() instead of draw_circular_area() since we do
+ // not desire any padding.
+ set_color(nedsim, COLOR(panel_fg));
XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc,
nedsim->origin_x_offset,
nedsim->origin_y_offset,
);
XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc,
nedsim->origin_x_offset,
- nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 2)),
+ nedsim->origin_y_offset + (nedsim->cell_size * (overall_height_in_cells-2)),
nedsim->cell_size * 2, nedsim->cell_size * 2,
180*64, 90*64
);
XFillArc(nedsim->dpy, nedsim->panel, nedsim->gc,
nedsim->origin_x_offset + (nedsim->cell_size * (OVERALL_WIDTH_IN_CELLS-2)),
- nedsim->origin_y_offset + (nedsim->cell_size * (HEADER_HEIGHT_IN_CELLS + nedsim->num_data_rows + FOOTER_HEIGHT_IN_CELLS - 2)),
+ nedsim->origin_y_offset + (nedsim->cell_size * (overall_height_in_cells-2)),
nedsim->cell_size * 2, nedsim->cell_size * 2,
0, -90*64
);
}
-// Draw the "NED" and "subgeniuskitty.com" logos on the front panel.
static void
draw_logo(struct NEDsim * nedsim)
{
- // First draw the two colored boxes that comprise the logo area.
- set_color(nedsim, &color_list[nedsim->color_index].primary);
- draw_rect_area(nedsim, LOGO_X_OFFSET, LOGO_Y_OFFSET, LOGO_WIDTH, LOGO_NAME_HEIGHT, True, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT, LOGO_WIDTH, LOGO_WEBSITE_HEIGHT, False, True, False, False);
-
- // Now draw the 'NED' text in the top box.
+ draw_rect_area(nedsim, COLOR(primary),
+ LOGO_X_OFFSET, LOGO_Y_OFFSET,
+ LOGO_WIDTH, LOGO_NAME_HEIGHT,
+ True, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(tertiary),
+ LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT,
+ LOGO_WIDTH, LOGO_WEBSITE_HEIGHT,
+ False, True, False, False
+ );
set_font_size(nedsim, LOGO_NAME_HEIGHT);
- draw_text(nedsim, "NED", LOGO_X_OFFSET, LOGO_Y_OFFSET, LOGO_WIDTH, LOGO_NAME_HEIGHT, True);
-
- // And draw the 'subgeniuskitty.com' text in the bottom box.
+ draw_text(nedsim, "NED", LOGO_X_OFFSET, LOGO_Y_OFFSET,
+ LOGO_WIDTH, LOGO_NAME_HEIGHT, True
+ );
set_font_size(nedsim, LOGO_WEBSITE_HEIGHT);
- draw_text(nedsim, "subgeniuskitty.com", LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT, LOGO_WIDTH, LOGO_WEBSITE_HEIGHT, True);
+ draw_text(nedsim, "subgeniuskitty.com", LOGO_X_OFFSET, LOGO_Y_OFFSET+LOGO_NAME_HEIGHT,
+ LOGO_WIDTH, LOGO_WEBSITE_HEIGHT, True
+ );
}
-// Draw the HALT indicator area on the front panel.
static void
draw_halt(struct NEDsim * nedsim)
{
- // First draw the two colored boxes that comprise the halt area.
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, HALT_X_OFFSET, HALT_Y_OFFSET, HALT_WIDTH, HALT_LIGHT_HEIGHT, True, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].secondary);
- draw_rect_area(nedsim, HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT, HALT_WIDTH, HALT_LABEL_HEIGHT, False, True, False, False);
-
- // And finally, draw the label.
- draw_text(nedsim, "HALT", HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT, HALT_WIDTH, HALT_LABEL_HEIGHT, True);
-}
-
-// Draw the 32 lights corresponding to 'word' at coordinates ('x','y').
-// Note that this function ONLY draws the lights and is used each frame for
-// updating the panel. To draw the wordline area itself, use draw_wordline().
-static void
-draw_wordline_lights(struct NEDsim * nedsim, uint32_t word, int x, int y)
-{
- for (int i = 0; i < WORDLINE_WIDTH; i++) {
- if (word & (1<<(WORDLINE_WIDTH-1-i))) {
- set_color(nedsim, &color_list[nedsim->color_index].light_on);
- } else {
- set_color(nedsim, &color_list[nedsim->color_index].light_off);
- }
- draw_circular_area(nedsim, x+i, y, WORDLINE_HEIGHT);
- }
+ draw_rect_area(nedsim, COLOR(tertiary),
+ HALT_X_OFFSET, HALT_Y_OFFSET,
+ HALT_WIDTH, HALT_LIGHT_HEIGHT,
+ True, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(secondary),
+ HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT,
+ HALT_WIDTH, HALT_LABEL_HEIGHT,
+ False, True, False, False
+ );
+ draw_text(nedsim, "HALT", HALT_X_OFFSET, HALT_Y_OFFSET+HALT_LIGHT_HEIGHT,
+ HALT_WIDTH, HALT_LABEL_HEIGHT, True
+ );
}
-// Draw a single 32-bit NED word line at coordinates ('x','y').
-// Note that this draws a wordline with value 0. To update with a specific
-// value, call draw_wordline_lights() after drawing the wordline area at least
-// once.
+// Draw a single 32-bit NED word line at coordinates ('x','y'). To update with
+// a specific value, call draw_wordline_lights() after drawing the wordline
+// area at least once.
static void
draw_wordline(struct NEDsim * nedsim, int x, int y)
{
// First, draw a solid box in the primary color over the entire wordline area.
- set_color(nedsim, &color_list[nedsim->color_index].primary);
- draw_rect_area(nedsim, x, y, WORDLINE_WIDTH, WORDLINE_HEIGHT, False, True, False, False);
+ draw_rect_area(nedsim, COLOR(primary),
+ x, y,
+ WORDLINE_WIDTH, WORDLINE_HEIGHT,
+ False, True, False, False
+ );
// Now, draw stripes in the secondary color.
- int i;
- for (i = 0; i < (WORDLINE_WIDTH/(2*WORDLINE_BITS_PER_STRIPE)); i++) {
- set_color(nedsim, &color_list[nedsim->color_index].secondary);
- draw_rect_area(nedsim, (x+(i*(WORDLINE_WIDTH/WORDLINE_BITS_PER_STRIPE))), y,
- WORDLINE_BITS_PER_STRIPE, WORDLINE_HEIGHT, False, True, False, False);
+ for (int i = 0; i < (WORDLINE_WIDTH/(2*WORDLINE_BITS_PER_STRIPE)); i++) {
+ draw_rect_area(nedsim, COLOR(secondary),
+ (x+(i*(WORDLINE_WIDTH/WORDLINE_BITS_PER_STRIPE))), y,
+ WORDLINE_BITS_PER_STRIPE, WORDLINE_HEIGHT,
+ False, True, False, False
+ );
}
-
- // Finally, draw the lights.
- draw_wordline_lights(nedsim, 0, x, y);
}
-// Draw the Program Counter area (but don't populate it yet).
static void
draw_pc(struct NEDsim * nedsim)
{
- // First draw the two colored boxes that comprise the PC area.
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, PC_X_OFFSET, PC_Y_OFFSET, PC_WIDTH, PC_LABEL_HEIGHT, True, True, False, False);
+ draw_rect_area(nedsim, COLOR(tertiary),
+ PC_X_OFFSET, PC_Y_OFFSET,
+ PC_WIDTH, PC_LABEL_HEIGHT,
+ True, True, False, False
+ );
draw_wordline(nedsim, PC_X_OFFSET, PC_Y_OFFSET+PC_LABEL_HEIGHT);
-
- // Now draw the label text "PC".
draw_text(nedsim, "PC", PC_X_OFFSET, PC_Y_OFFSET, PC_WIDTH, PC_LABEL_HEIGHT, True);
}
-// Draw the Stack Counter area (but don't populate it yet).
static void
draw_sc(struct NEDsim * nedsim)
{
- // First draw the two colored boxes that comprise the SC area.
- set_color(nedsim, &color_list[nedsim->color_index].secondary);
- draw_rect_area(nedsim, SC_X_OFFSET, SC_Y_OFFSET, SC_WIDTH, SC_LABEL_HEIGHT, True, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, SC_X_OFFSET, SC_Y_OFFSET+SC_LABEL_HEIGHT, SC_WIDTH, SC_LIGHT_HEIGHT, False, True, False, False);
-
- // Now draw the label text "SC".
+ draw_rect_area(nedsim, COLOR(secondary),
+ SC_X_OFFSET, SC_Y_OFFSET,
+ SC_WIDTH, SC_LABEL_HEIGHT,
+ True, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(tertiary),
+ SC_X_OFFSET, SC_Y_OFFSET+SC_LABEL_HEIGHT,
+ SC_WIDTH, SC_LIGHT_HEIGHT,
+ False, True, False, False
+ );
draw_text(nedsim, "SC", SC_X_OFFSET, SC_Y_OFFSET, SC_WIDTH, SC_LABEL_HEIGHT, True);
}
-// Draw areas for the two PSW flags, 'Z'ero and 'N'egative.
static void
draw_psw(struct NEDsim * nedsim)
{
- // First draw the four colored boxes that comprise the two PSW areas.
- set_color(nedsim, &color_list[nedsim->color_index].secondary);
- draw_rect_area(nedsim, PSW_N_X_OFFSET, PSW_Y_OFFSET, PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].secondary);
- draw_rect_area(nedsim, PSW_Z_X_OFFSET, PSW_Y_OFFSET, PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, (PSW_N_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT, False, True, False, False);
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, (PSW_Z_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT, False, True, False, False);
-
- // Now draw the label text.
- draw_text(nedsim, "N", PSW_N_X_OFFSET, PSW_Y_OFFSET, PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True);
- draw_text(nedsim, "Z", PSW_Z_X_OFFSET, PSW_Y_OFFSET, PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True);
+ draw_rect_area(nedsim, COLOR(secondary),
+ PSW_N_X_OFFSET, PSW_Y_OFFSET,
+ PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT,
+ True, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(secondary),
+ PSW_Z_X_OFFSET, PSW_Y_OFFSET,
+ PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT,
+ True, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(tertiary),
+ (PSW_N_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT,
+ PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT,
+ False, True, False, False
+ );
+ draw_rect_area(nedsim, COLOR(tertiary),
+ (PSW_Z_X_OFFSET + 1), PSW_Y_OFFSET+PSW_LABEL_HEIGHT,
+ PSW_LIGHT_WIDTH, PSW_LIGHT_HEIGHT,
+ False, True, False, False
+ );
+ draw_text(nedsim, "N", PSW_N_X_OFFSET, PSW_Y_OFFSET,
+ PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True
+ );
+ draw_text(nedsim, "Z", PSW_Z_X_OFFSET, PSW_Y_OFFSET,
+ PSW_LABEL_WIDTH, PSW_LABEL_HEIGHT, True
+ );
}
-// Draw the stack area (but don't populate it yet).
static void
draw_stack(struct NEDsim * nedsim)
{
- // First draw the two colored boxes that comprise the stack area.
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, STACK_X_OFFSET, STACK_Y_OFFSET, STACK_WIDTH, STACK_LABEL_HEIGHT, True, True, False, False);
+ draw_rect_area(nedsim, COLOR(tertiary),
+ STACK_X_OFFSET, STACK_Y_OFFSET,
+ STACK_WIDTH, STACK_LABEL_HEIGHT,
+ True, True, False, False
+ );
for (int i = 0; i < nedsim->num_data_rows; i++) {
draw_wordline(nedsim, STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i);
}
-
- // Now draw the label text "Stack Size:".
- draw_text(nedsim, "Stack Size:", STACK_X_OFFSET+1, STACK_Y_OFFSET, STACK_WIDTH, STACK_LABEL_HEIGHT, False);
+ draw_text(nedsim, "Stack Size:", STACK_X_OFFSET+1, STACK_Y_OFFSET,
+ STACK_WIDTH, STACK_LABEL_HEIGHT, False
+ );
}
-// Draw the heap area (but don't populate it yet).
static void
draw_heap(struct NEDsim * nedsim)
{
-// TODO: What should I do about this define? I would like to be able to specify the address so I can do things like display the code itself if nothign interesting happens in RAM.
-#define HEAP_START_ADDRESS 0x20000000
-
- // First draw the two colored boxes that comprise the heap area.
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, HEAP_X_OFFSET, HEAP_Y_OFFSET, HEAP_WIDTH, HEAP_LABEL_HEIGHT, True, True, False, False);
+ draw_rect_area(nedsim, COLOR(tertiary),
+ HEAP_X_OFFSET, HEAP_Y_OFFSET,
+ HEAP_WIDTH, HEAP_LABEL_HEIGHT,
+ True, True, False, False
+ );
for (int i = 0; i < nedsim->num_data_rows; i++) {
draw_wordline(nedsim, HEAP_X_OFFSET, HEAP_Y_OFFSET+HEAP_LABEL_HEIGHT+i);
}
-
- // Now draw the text label "RAM Base:".
- draw_text(nedsim, "RAM Base:", HEAP_X_OFFSET+1, HEAP_Y_OFFSET, HEAP_WIDTH, HEAP_LABEL_HEIGHT, False);
-
- // Now draw the address text.
+ draw_text(nedsim, "RAM Base:", HEAP_X_OFFSET+1, HEAP_Y_OFFSET,
+ HEAP_WIDTH, HEAP_LABEL_HEIGHT, False
+ );
char address[11];
snprintf(address, sizeof(address), "0x%08X", HEAP_START_ADDRESS);
- draw_text(nedsim, address, (HEAP_X_OFFSET+(HEAP_WIDTH/2)+1), HEAP_Y_OFFSET, HEAP_WIDTH, HEAP_LABEL_HEIGHT, False);
-}
-
-// After the static front panel has been drawn at least once, this function
-// updates all the dynamic parts of the panel (lights + text values) and is
-// called every frame.
-static void
-update_display(struct NEDsim * nedsim)
-{
- // Draw the halt indicator.
- if (nedsim->nedstate->halted) {
- set_color(nedsim, &color_list[nedsim->color_index].error_on);
- } else {
- set_color(nedsim, &color_list[nedsim->color_index].error_off);
- }
- draw_circular_area(nedsim, HALT_X_OFFSET, HALT_Y_OFFSET, HALT_WIDTH);
-
- // Draw the PSW "N" light.
- if (nedsim->nedstate->active_thread->psw->negative) {
- set_color(nedsim, &color_list[nedsim->color_index].light_on);
- } else {
- set_color(nedsim, &color_list[nedsim->color_index].light_off);
- }
- draw_circular_area(nedsim, PSW_N_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT);
-
- // Draw the PSW "Z" light.
- if (nedsim->nedstate->active_thread->psw->zero) {
- set_color(nedsim, &color_list[nedsim->color_index].light_on);
- } else {
- set_color(nedsim, &color_list[nedsim->color_index].light_off);
- }
- draw_circular_area(nedsim, PSW_Z_X_OFFSET+1, PSW_Y_OFFSET+PSW_LABEL_HEIGHT, PSW_LIGHT_HEIGHT);
-
-
- // Draw the SC.
- int i;
- for (i = 0; i < SC_WIDTH; i++) {
- if ((SC_WIDTH-1-i) == nedsim->nedstate->active_thread->sc) {
- set_color(nedsim, &color_list[nedsim->color_index].light_on);
- } else {
- set_color(nedsim, &color_list[nedsim->color_index].light_off);
- }
- draw_circular_area(nedsim, SC_X_OFFSET+i, SC_Y_OFFSET+SC_LABEL_HEIGHT, SC_LIGHT_HEIGHT);
- }
-
- // Draw the PC.
- draw_wordline_lights(nedsim, nedsim->nedstate->active_thread->pc, PC_X_OFFSET, PC_Y_OFFSET+PC_LABEL_HEIGHT);
-
- // Draw the stack lights.
- int64_t top_of_stack = ((int64_t)nedsim->nedstate->active_thread->sp) - 1;
- for (i = 0; i < nedsim->num_data_rows; i++) {
- if ((top_of_stack-i) >= 0) {
- draw_wordline_lights(nedsim, nedsim->nedstate->active_thread->stack[top_of_stack-i], STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i);
- } else {
- draw_wordline_lights(nedsim, 0, STACK_X_OFFSET, STACK_Y_OFFSET+STACK_LABEL_HEIGHT+i);
- }
- }
-
- // Draw the stack size in text.
- set_color(nedsim, &color_list[nedsim->color_index].tertiary);
- draw_rect_area(nedsim, STACK_X_OFFSET+(STACK_WIDTH/2), STACK_Y_OFFSET, STACK_WIDTH/2, STACK_LABEL_HEIGHT, True, True, False, False);
- char stack_size[11];
- snprintf(stack_size, sizeof(stack_size), "0x%08X", nedsim->nedstate->active_thread->sp);
- draw_text(nedsim, stack_size, (STACK_X_OFFSET+(STACK_WIDTH/2)+1), STACK_Y_OFFSET, STACK_WIDTH, STACK_LABEL_HEIGHT, False);
-
- // Draw the heap lights.
- for (i = 0; i < nedsim->num_data_rows; i++) {
- draw_wordline_lights(nedsim, ram_r_word(nedsim->nedstate, HEAP_START_ADDRESS+(i*BPW)), HEAP_X_OFFSET, HEAP_Y_OFFSET+HEAP_LABEL_HEIGHT+i);
- }
+ draw_text(nedsim, address, (HEAP_X_OFFSET+(HEAP_WIDTH/2)+1), HEAP_Y_OFFSET,
+ HEAP_WIDTH, HEAP_LABEL_HEIGHT, False
+ );
}
/* -------------------------------------------------------------------------- */
static void *
NEDsim_init(Display * dpy, Window win)
{
- // =========================================================================
- // Basic Setup
- // =========================================================================
+ // Basic Setup ---------------------------------------------------------------------------------
struct NEDsim * nedsim;
nedsim->panel = XCreatePixmap(nedsim->dpy, nedsim->win, nedsim->dpy_width, nedsim->dpy_height, xgwa.depth);
- // =========================================================================
- // Process User Requests
- // =========================================================================
+ // Process User Requests -----------------------------------------------------------------------
nedsim->delay = get_integer_resource(nedsim->dpy, "delay", "Integer");
nedsim->delay *= 1000; /* Turn milliseconds into microseconds. */
nedsim->color_index = 0;
}
- // =========================================================================
- // Scale Panel To Screen
- // =========================================================================
+ // Scale Panel To Screen -----------------------------------------------------------------------
// We desire to make the panel as wide as possible while also making the
// cell size an integer pixel size.
// Scale border relative to cell_size in a 1:10 relationship.
nedsim->border_size = nedsim->cell_size / 10;
- // =========================================================================
- // Draw Initial Panel
- // =========================================================================
+ // Draw Initial Panel --------------------------------------------------------------------------
draw_panel(nedsim);
draw_logo(nedsim);
nedsim->nedstate = run_simulator(nedsim->nedstate);
update_display(nedsim);
} else {
- set_color(nedsim, &color_list[nedsim->color_index].error_on);
+ set_color(nedsim, COLOR(error_on));
XFillRectangle(nedsim->dpy, nedsim->panel, nedsim->gc, 0, 0, nedsim->dpy_width, nedsim->dpy_height);
}