/* * CDDL HEADER START * * The contents of this file are subject to the terms of the * Common Development and Distribution License (the "License"). * You may not use this file except in compliance with the License. * * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE * or http://www.opensolaris.org/os/licensing. * See the License for the specific language governing permissions * and limitations under the License. * * When distributing Covered Code, include this CDDL HEADER in each * file and include the License file at usr/src/OPENSOLARIS.LICENSE. * If applicable, add the following below this CDDL HEADER, with the * fields enclosed by brackets "[]" replaced with your own identifying * information: Portions Copyright [yyyy] [name of copyright owner] * * CDDL HEADER END */ /* * Copyright 2008 Sun Microsystems, Inc. All rights reserved. * Use is subject to license terms. */ /* * Copyright 2016 Joyent, Inc. */ /* * Polled I/O safe ANSI terminal emulator module; * Supporting TERM types 'sun' and 'sun-color, parsing * ANSI x3.64 escape sequences, and the like. (See wscons(7d) * for more information). * * IMPORTANT: * * The functions in this file *must* be able to function in * standalone mode, ie. on a quiesced system. In that state, * access is single threaded, only one CPU is running. * System services are NOT available. * * The following restrictions pertain to every function * in this file: * * - CANNOT use the DDI or LDI interfaces * - CANNOT call system services * - CANNOT use mutexes * - CANNOT wait for interrupts * - CANNOT allocate memory * * All non-static functions in this file which: * - Operates on tems and tem_vt_state * - Not only called from standalone mode, i.e. has * a "calledfrom" argument * should assert this at the beginning: * * ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || * called_from == CALLED_FROM_STANDALONE); */ #include #include #include #include #include #include #include #include #include #include #include tem_safe_callbacks_t tem_safe_text_callbacks = { &tem_safe_text_display, &tem_safe_text_copy, &tem_safe_text_cursor, NULL, &tem_safe_text_cls }; tem_safe_callbacks_t tem_safe_pix_callbacks = { &tem_safe_pix_display, &tem_safe_pix_copy, &tem_safe_pix_cursor, &tem_safe_pix_bit2pix, &tem_safe_pix_cls }; static void tem_safe_control(struct tem_vt_state *, tem_char_t, cred_t *, enum called_from); static void tem_safe_setparam(struct tem_vt_state *, int, int); static void tem_safe_selgraph(struct tem_vt_state *); static void tem_safe_chkparam(struct tem_vt_state *, tem_char_t, cred_t *, enum called_from); static void tem_safe_getparams(struct tem_vt_state *, tem_char_t, cred_t *, enum called_from); static void tem_safe_outch(struct tem_vt_state *, tem_char_t, cred_t *, enum called_from); static void tem_safe_parse(struct tem_vt_state *, tem_char_t, cred_t *, enum called_from); static void tem_safe_new_line(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_cr(struct tem_vt_state *); static void tem_safe_lf(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_send_data(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_cls(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_tab(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_back_tab(struct tem_vt_state *, cred_t *, enum called_from); static void tem_safe_clear_tabs(struct tem_vt_state *, int); static void tem_safe_set_tab(struct tem_vt_state *); static void tem_safe_mv_cursor(struct tem_vt_state *, int, int, cred_t *, enum called_from); static void tem_safe_shift(struct tem_vt_state *, int, int, cred_t *, enum called_from); static void tem_safe_scroll(struct tem_vt_state *, int, int, int, int, cred_t *, enum called_from); static void tem_safe_clear_chars(struct tem_vt_state *tem, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from); static void tem_safe_copy_area(struct tem_vt_state *tem, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row, cred_t *credp, enum called_from called_from); static void tem_safe_image_display(struct tem_vt_state *, uchar_t *, int, int, screen_pos_t, screen_pos_t, cred_t *, enum called_from); static void tem_safe_bell(struct tem_vt_state *tem, enum called_from called_from); static void tem_safe_pix_clear_prom_output(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from); static void tem_safe_get_color(text_color_t *, text_color_t *, term_char_t); static void tem_safe_virtual_cls(struct tem_vt_state *, int, screen_pos_t, screen_pos_t); static void tem_safe_virtual_display(struct tem_vt_state *, term_char_t *, int, screen_pos_t, screen_pos_t); static void tem_safe_virtual_copy(struct tem_vt_state *, screen_pos_t, screen_pos_t, screen_pos_t, screen_pos_t, screen_pos_t, screen_pos_t); static void tem_safe_align_cursor(struct tem_vt_state *tem); static void bit_to_pix4(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color); static void bit_to_pix8(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color); static void bit_to_pix16(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color); static void bit_to_pix24(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color); static void bit_to_pix32(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color); #define PIX4TO32(pix4) (uint32_t)( \ cmap4_to_24.red[pix4] << 16 | \ cmap4_to_24.green[pix4] << 8 | \ cmap4_to_24.blue[pix4]) #define INVERSE(ch) (ch ^ 0xff) #define tem_safe_callback_display (*tems.ts_callbacks->tsc_display) #define tem_safe_callback_copy (*tems.ts_callbacks->tsc_copy) #define tem_safe_callback_cursor (*tems.ts_callbacks->tsc_cursor) #define tem_safe_callback_cls (*tems.ts_callbacks->tsc_cls) #define tem_safe_callback_bit2pix(tem, c) { \ ASSERT(tems.ts_callbacks->tsc_bit2pix != NULL); \ (void) (*tems.ts_callbacks->tsc_bit2pix)((tem), (c));\ } void tem_safe_check_first_time( struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { static int first_time = 1; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); /* * Realign the console cursor. We did this in tem_init(). * However, drivers in the console stream may emit additional * messages before we are ready. This causes text overwrite * on the screen. This is a workaround. */ if (!first_time) return; first_time = 0; if (tems.ts_display_mode == VIS_TEXT) tem_safe_text_cursor(tem, VIS_GET_CURSOR, credp, called_from); else tem_safe_pix_cursor(tem, VIS_GET_CURSOR, credp, called_from); tem_safe_align_cursor(tem); } /* * This entry point handles output requests from restricted contexts like * kmdb, where services like mutexes are not available. This function * is entered when OBP or when a kernel debugger (such as kmdb) * are generating console output. In those cases, power management * concerns are handled by the abort sequence initiation (ie. when * the user hits L1+A or the equivalent to enter OBP or the debugger.). * It is also entered when the kernel is panicing. */ void tem_safe_polled_write( tem_vt_state_t tem_arg, uchar_t *buf, int len) { struct tem_vt_state *tem = (struct tem_vt_state *)tem_arg; #ifdef __lock_lint _NOTE(NO_COMPETING_THREADS_NOW) _NOTE(NO_COMPETING_THREADS_AS_SIDE_EFFECT) #endif if (!tem->tvs_initialized) { return; } tem_safe_check_first_time(tem, kcred, CALLED_FROM_STANDALONE); tem_safe_terminal_emulate(tem, buf, len, NULL, CALLED_FROM_STANDALONE); } /* Process partial UTF-8 sequence. */ static void tem_safe_input_partial(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { unsigned i; uint8_t c; if (tem->tvs_utf8_left == 0) return; for (i = 0; i < sizeof (tem->tvs_utf8_partial); i++) { c = (tem->tvs_utf8_partial >> (24 - (i << 3))) & 0xff; if (c != 0) { tem_safe_parse(tem, c, credp, called_from); } } tem->tvs_utf8_left = 0; tem->tvs_utf8_partial = 0; } /* * Handle UTF-8 sequences. */ static void tem_safe_input_byte(struct tem_vt_state *tem, uchar_t c, cred_t *credp, enum called_from called_from) { /* * Check for UTF-8 code points. In case of error fall back to * 8-bit code. As we only have 8859-1 fonts for console, this will set * the limits on what chars we actually can display, therefore we * have to return to this code once we have solved the font issue. */ if ((c & 0x80) == 0x00) { /* One-byte sequence. */ tem_safe_input_partial(tem, credp, called_from); tem_safe_parse(tem, c, credp, called_from); return; } if ((c & 0xe0) == 0xc0) { /* Two-byte sequence. */ tem_safe_input_partial(tem, credp, called_from); tem->tvs_utf8_left = 1; tem->tvs_utf8_partial = c; return; } if ((c & 0xf0) == 0xe0) { /* Three-byte sequence. */ tem_safe_input_partial(tem, credp, called_from); tem->tvs_utf8_left = 2; tem->tvs_utf8_partial = c; return; } if ((c & 0xf8) == 0xf0) { /* Four-byte sequence. */ tem_safe_input_partial(tem, credp, called_from); tem->tvs_utf8_left = 3; tem->tvs_utf8_partial = c; return; } if ((c & 0xc0) == 0x80) { /* Invalid state? */ if (tem->tvs_utf8_left == 0) { tem_safe_parse(tem, c, credp, called_from); return; } tem->tvs_utf8_left--; tem->tvs_utf8_partial = (tem->tvs_utf8_partial << 8) | c; if (tem->tvs_utf8_left == 0) { tem_char_t v, u; uint8_t b; /* * Transform the sequence of 2 to 4 bytes to * unicode number. */ v = 0; u = tem->tvs_utf8_partial; b = (u >> 24) & 0xff; if (b != 0) { /* Four-byte sequence */ v = b & 0x07; b = (u >> 16) & 0xff; v = (v << 6) | (b & 0x3f); b = (u >> 8) & 0xff; v = (v << 6) | (b & 0x3f); b = u & 0xff; v = (v << 6) | (b & 0x3f); } else if ((b = (u >> 16) & 0xff) != 0) { v = b & 0x0f; /* Three-byte sequence */ b = (u >> 8) & 0xff; v = (v << 6) | (b & 0x3f); b = u & 0xff; v = (v << 6) | (b & 0x3f); } else if ((b = (u >> 8) & 0xff) != 0) { v = b & 0x1f; /* Two-byte sequence */ b = u & 0xff; v = (v << 6) | (b & 0x3f); } tem_safe_parse(tem, v, credp, called_from); tem->tvs_utf8_partial = 0; } return; } /* Anything left is illegal in UTF-8 sequence. */ tem_safe_input_partial(tem, credp, called_from); tem_safe_parse(tem, c, credp, called_from); } /* * This is the main entry point into the terminal emulator. * * For each data message coming downstream, ANSI assumes that it is composed * of ASCII characters, which are treated as a byte-stream input to the * parsing state machine. All data is parsed immediately -- there is * no enqueing. */ void tem_safe_terminal_emulate( struct tem_vt_state *tem, uchar_t *buf, int len, cred_t *credp, enum called_from called_from) { ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (tem->tvs_isactive) tem_safe_callback_cursor(tem, VIS_HIDE_CURSOR, credp, called_from); for (; len > 0; len--, buf++) tem_safe_input_byte(tem, *buf, credp, called_from); /* * Send the data we just got to the framebuffer. */ tem_safe_send_data(tem, credp, called_from); if (tem->tvs_isactive) tem_safe_callback_cursor(tem, VIS_DISPLAY_CURSOR, credp, called_from); } /* * Display an rectangular image on the frame buffer using the * mechanism appropriate for the system state being called * from quiesced or normal (ie. use polled I/O vs. layered ioctls) */ static void tems_safe_display(struct vis_consdisplay *pda, cred_t *credp, enum called_from called_from) { if (called_from == CALLED_FROM_STANDALONE) tems.ts_fb_polledio->display(tems.ts_fb_polledio->arg, pda); else tems_display_layered(pda, credp); } /* * Copy a rectangle from one location to another on the frame buffer * using the mechanism appropriate for the system state being called * from, quiesced or normal (ie. use polled I/O vs. layered ioctls) */ void tems_safe_copy(struct vis_conscopy *pca, cred_t *credp, enum called_from called_from) { if (called_from == CALLED_FROM_STANDALONE) tems.ts_fb_polledio->copy(tems.ts_fb_polledio->arg, pca); else tems_copy_layered(pca, credp); } /* * Display or hide a rectangular block text cursor of a specificsize * at a specific location on frame buffer* using the mechanism * appropriate for the system state being called from, quisced or * normal (ie. use polled I/O vs. layered ioctls). */ static void tems_safe_cursor(struct vis_conscursor *pca, cred_t *credp, enum called_from called_from) { if (called_from == CALLED_FROM_STANDALONE) tems.ts_fb_polledio->cursor(tems.ts_fb_polledio->arg, pca); else tems_cursor_layered(pca, credp); } /* * send the appropriate control message or set state based on the * value of the control character ch */ static void tem_safe_control(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp, enum called_from called_from) { tem->tvs_state = A_STATE_START; switch (ch) { case A_BEL: tem_safe_bell(tem, called_from); break; case A_BS: tem_safe_mv_cursor(tem, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col - 1, credp, called_from); break; case A_HT: tem_safe_tab(tem, credp, called_from); break; case A_NL: /* * tem_safe_send_data(tem, credp, called_from); * tem_safe_new_line(tem, credp, called_from); * break; */ case A_VT: tem_safe_send_data(tem, credp, called_from); tem_safe_lf(tem, credp, called_from); break; case A_FF: tem_safe_send_data(tem, credp, called_from); tem_safe_cls(tem, credp, called_from); break; case A_CR: tem_safe_send_data(tem, credp, called_from); tem_safe_cr(tem); break; case A_ESC: tem->tvs_state = A_STATE_ESC; break; case A_CSI: { int i; tem->tvs_curparam = 0; tem->tvs_paramval = 0; tem->tvs_gotparam = B_FALSE; /* clear the parameters */ for (i = 0; i < TEM_MAXPARAMS; i++) tem->tvs_params[i] = -1; tem->tvs_state = A_STATE_CSI; } break; case A_GS: tem_safe_back_tab(tem, credp, called_from); break; default: break; } } /* * if parameters [0..count - 1] are not set, set them to the value * of newparam. */ static void tem_safe_setparam(struct tem_vt_state *tem, int count, int newparam) { int i; for (i = 0; i < count; i++) { if (tem->tvs_params[i] == -1) tem->tvs_params[i] = newparam; } } /* * select graphics mode based on the param vals stored in a_params */ static void tem_safe_selgraph(struct tem_vt_state *tem) { int curparam; int count = 0; int param; tem->tvs_state = A_STATE_START; curparam = tem->tvs_curparam; do { param = tem->tvs_params[count]; switch (param) { case -1: case 0: /* reset to initial normal settings */ tem->tvs_fg_color = tems.ts_init_color.fg_color; tem->tvs_bg_color = tems.ts_init_color.bg_color; tem->tvs_flags = tems.ts_init_color.a_flags; break; case 1: /* Bold Intense */ tem->tvs_flags |= TEM_ATTR_BOLD; break; case 2: /* Faint Intense */ tem->tvs_flags &= ~TEM_ATTR_BOLD; break; case 4: /* Underline */ tem->tvs_flags |= TEM_ATTR_UNDERLINE; break; case 5: /* Blink */ tem->tvs_flags |= TEM_ATTR_BLINK; break; case 7: /* Reverse video */ if (tem->tvs_flags & TEM_ATTR_SCREEN_REVERSE) { tem->tvs_flags &= ~TEM_ATTR_REVERSE; } else { tem->tvs_flags |= TEM_ATTR_REVERSE; } break; case 22: /* Remove Bold */ tem->tvs_flags &= ~TEM_ATTR_BOLD; break; case 24: /* Remove Underline */ tem->tvs_flags &= ~TEM_ATTR_UNDERLINE; break; case 25: /* Remove Blink */ tem->tvs_flags &= ~TEM_ATTR_BLINK; break; case 27: /* Remove Reverse */ if (tem->tvs_flags & TEM_ATTR_SCREEN_REVERSE) { tem->tvs_flags |= TEM_ATTR_REVERSE; } else { tem->tvs_flags &= ~TEM_ATTR_REVERSE; } break; case 30: /* black (grey) foreground */ case 31: /* red (light red) foreground */ case 32: /* green (light green) foreground */ case 33: /* brown (yellow) foreground */ case 34: /* blue (light blue) foreground */ case 35: /* magenta (light magenta) foreground */ case 36: /* cyan (light cyan) foreground */ case 37: /* white (bright white) foreground */ tem->tvs_fg_color = param - 30; tem->tvs_flags &= ~TEM_ATTR_BRIGHT_FG; break; case 38: /* We should have at least 3 parameters */ if (curparam < 3) break; /* * 256 and truecolor needs depth at least 24, but * we still need to process the sequence. */ count++; curparam--; param = tem->tvs_params[count]; switch (param) { case 5: /* 256 colors */ count++; curparam--; if (tems.ts_pdepth < 24) break; tem->tvs_fg_color = tem->tvs_params[count]; tem->tvs_flags &= ~TEM_ATTR_BRIGHT_FG; break; default: break; } break; case 39: /* * Reset the foreground colour and brightness. */ tem->tvs_fg_color = tems.ts_init_color.fg_color; if (tems.ts_init_color.a_flags & TEM_ATTR_BRIGHT_FG) tem->tvs_flags |= TEM_ATTR_BRIGHT_FG; else tem->tvs_flags &= ~TEM_ATTR_BRIGHT_FG; break; case 40: /* black (grey) background */ case 41: /* red (light red) background */ case 42: /* green (light green) background */ case 43: /* brown (yellow) background */ case 44: /* blue (light blue) background */ case 45: /* magenta (light magenta) background */ case 46: /* cyan (light cyan) background */ case 47: /* white (bright white) background */ tem->tvs_bg_color = param - 40; tem->tvs_flags &= ~TEM_ATTR_BRIGHT_BG; break; case 48: /* We should have at least 3 parameters */ if (curparam < 3) break; /* * 256 and truecolor needs depth at least 24, but * we still need to process the sequence. */ count++; curparam--; param = tem->tvs_params[count]; switch (param) { case 5: /* 256 colors */ count++; curparam--; if (tems.ts_pdepth < 24) break; tem->tvs_bg_color = tem->tvs_params[count]; tem->tvs_flags &= ~TEM_ATTR_BRIGHT_BG; break; default: break; } break; case 49: /* * Reset the background colour and brightness. */ tem->tvs_bg_color = tems.ts_init_color.bg_color; if (tems.ts_init_color.a_flags & TEM_ATTR_BRIGHT_BG) tem->tvs_flags |= TEM_ATTR_BRIGHT_BG; else tem->tvs_flags &= ~TEM_ATTR_BRIGHT_BG; break; case 90: /* black (grey) foreground */ case 91: /* red (light red) foreground */ case 92: /* green (light green) foreground */ case 93: /* brown (yellow) foreground */ case 94: /* blue (light blue) foreground */ case 95: /* magenta (light magenta) foreground */ case 96: /* cyan (light cyan) foreground */ case 97: /* white (bright white) foreground */ tem->tvs_fg_color = param - 90; tem->tvs_flags |= TEM_ATTR_BRIGHT_FG; break; case 100: /* black (grey) background */ case 101: /* red (light red) background */ case 102: /* green (light green) background */ case 103: /* brown (yellow) background */ case 104: /* blue (light blue) background */ case 105: /* magenta (light magenta) background */ case 106: /* cyan (light cyan) background */ case 107: /* white (bright white) background */ tem->tvs_bg_color = param - 100; tem->tvs_flags |= TEM_ATTR_BRIGHT_BG; break; default: break; } count++; curparam--; } while (curparam > 0); } /* * perform the appropriate action for the escape sequence * * General rule: This code does not validate the arguments passed. * It assumes that the next lower level will do so. */ static void tem_safe_chkparam(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp, enum called_from called_from) { int i; int row; int col; ASSERT((called_from == CALLED_FROM_STANDALONE) || MUTEX_HELD(&tem->tvs_lock)); row = tem->tvs_c_cursor.row; col = tem->tvs_c_cursor.col; switch (ch) { case 'm': /* select terminal graphics mode */ tem_safe_send_data(tem, credp, called_from); tem_safe_selgraph(tem); break; case '@': /* insert char */ tem_safe_setparam(tem, 1, 1); tem_safe_shift(tem, tem->tvs_params[0], TEM_SHIFT_RIGHT, credp, called_from); break; case 'A': /* cursor up */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row - tem->tvs_params[0], col, credp, called_from); break; case 'd': /* VPA - vertical position absolute */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, tem->tvs_params[0] - 1, col, credp, called_from); break; case 'e': /* VPR - vertical position relative */ case 'B': /* cursor down */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row + tem->tvs_params[0], col, credp, called_from); break; case 'a': /* HPR - horizontal position relative */ case 'C': /* cursor right */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row, col + tem->tvs_params[0], credp, called_from); break; case '`': /* HPA - horizontal position absolute */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row, tem->tvs_params[0] - 1, credp, called_from); break; case 'D': /* cursor left */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row, col - tem->tvs_params[0], credp, called_from); break; case 'E': /* CNL cursor next line */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row + tem->tvs_params[0], 0, credp, called_from); break; case 'F': /* CPL cursor previous line */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row - tem->tvs_params[0], 0, credp, called_from); break; case 'G': /* cursor horizontal position */ tem_safe_setparam(tem, 1, 1); tem_safe_mv_cursor(tem, row, tem->tvs_params[0] - 1, credp, called_from); break; case 'g': /* clear tabs */ tem_safe_setparam(tem, 1, 0); tem_safe_clear_tabs(tem, tem->tvs_params[0]); break; case 'f': /* HVP Horizontal and Vertical Position */ case 'H': /* CUP position cursor */ tem_safe_setparam(tem, 2, 1); tem_safe_mv_cursor(tem, tem->tvs_params[0] - 1, tem->tvs_params[1] - 1, credp, called_from); break; case 'I': /* CHT - Cursor Horizontal Tab */ /* Not implemented */ break; case 'J': /* ED - Erase in Display */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 0); switch (tem->tvs_params[0]) { case 0: /* erase cursor to end of screen */ /* FIRST erase cursor to end of line */ tem_safe_clear_chars(tem, tems.ts_c_dimension.width - tem->tvs_c_cursor.col, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, credp, called_from); /* THEN erase lines below the cursor */ for (row = tem->tvs_c_cursor.row + 1; row < tems.ts_c_dimension.height; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } break; case 1: /* erase beginning of screen to cursor */ /* FIRST erase lines above the cursor */ for (row = 0; row < tem->tvs_c_cursor.row; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } /* THEN erase beginning of line to cursor */ tem_safe_clear_chars(tem, tem->tvs_c_cursor.col + 1, tem->tvs_c_cursor.row, 0, credp, called_from); break; case 2: /* erase whole screen */ for (row = 0; row < tems.ts_c_dimension.height; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } break; } break; case 'K': /* EL - Erase in Line */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 0); switch (tem->tvs_params[0]) { case 0: /* erase cursor to end of line */ tem_safe_clear_chars(tem, (tems.ts_c_dimension.width - tem->tvs_c_cursor.col), tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, credp, called_from); break; case 1: /* erase beginning of line to cursor */ tem_safe_clear_chars(tem, tem->tvs_c_cursor.col + 1, tem->tvs_c_cursor.row, 0, credp, called_from); break; case 2: /* erase whole line */ tem_safe_clear_chars(tem, tems.ts_c_dimension.width, tem->tvs_c_cursor.row, 0, credp, called_from); break; } break; case 'L': /* insert line */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 1); tem_safe_scroll(tem, tem->tvs_c_cursor.row, tems.ts_c_dimension.height - 1, tem->tvs_params[0], TEM_SCROLL_DOWN, credp, called_from); break; case 'M': /* delete line */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 1); tem_safe_scroll(tem, tem->tvs_c_cursor.row, tems.ts_c_dimension.height - 1, tem->tvs_params[0], TEM_SCROLL_UP, credp, called_from); break; case 'P': /* DCH - delete char */ tem_safe_setparam(tem, 1, 1); tem_safe_shift(tem, tem->tvs_params[0], TEM_SHIFT_LEFT, credp, called_from); break; case 'S': /* scroll up */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 1); tem_safe_scroll(tem, 0, tems.ts_c_dimension.height - 1, tem->tvs_params[0], TEM_SCROLL_UP, credp, called_from); break; case 'T': /* scroll down */ tem_safe_send_data(tem, credp, called_from); tem_safe_setparam(tem, 1, 1); tem_safe_scroll(tem, 0, tems.ts_c_dimension.height - 1, tem->tvs_params[0], TEM_SCROLL_DOWN, credp, called_from); break; case 'X': /* erase char */ tem_safe_setparam(tem, 1, 1); tem_safe_clear_chars(tem, tem->tvs_params[0], tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, credp, called_from); break; case 'Z': /* cursor backward tabulation */ tem_safe_setparam(tem, 1, 1); /* * Rule exception - We do sanity checking here. * * Restrict the count to a sane value to keep from * looping for a long time. There can't be more than one * tab stop per column, so use that as a limit. */ if (tem->tvs_params[0] > tems.ts_c_dimension.width) tem->tvs_params[0] = tems.ts_c_dimension.width; for (i = 0; i < tem->tvs_params[0]; i++) tem_safe_back_tab(tem, credp, called_from); break; } tem->tvs_state = A_STATE_START; } /* * Gather the parameters of an ANSI escape sequence */ static void tem_safe_getparams(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp, enum called_from called_from) { ASSERT((called_from == CALLED_FROM_STANDALONE) || MUTEX_HELD(&tem->tvs_lock)); if (ch >= '0' && ch <= '9') { tem->tvs_paramval = ((tem->tvs_paramval * 10) + (ch - '0')); tem->tvs_gotparam = B_TRUE; /* Remember got parameter */ return; /* Return immediately */ } else if (tem->tvs_state == A_STATE_CSI_EQUAL || tem->tvs_state == A_STATE_CSI_QMARK) { tem->tvs_state = A_STATE_START; } else { if (tem->tvs_curparam < TEM_MAXPARAMS) { if (tem->tvs_gotparam) { /* get the parameter value */ tem->tvs_params[tem->tvs_curparam] = tem->tvs_paramval; } tem->tvs_curparam++; } if (ch == ';') { /* Restart parameter search */ tem->tvs_gotparam = B_FALSE; tem->tvs_paramval = 0; /* No parame value yet */ } else { /* Handle escape sequence */ tem_safe_chkparam(tem, ch, credp, called_from); } } } /* * Add character to internal buffer. * When its full, send it to the next layer. */ static void tem_safe_outch(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp, enum called_from called_from) { text_color_t fg; text_color_t bg; text_attr_t attr; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); /* buffer up the character until later */ tem_safe_get_attr(tem, &fg, &bg, &attr, TEM_ATTR_REVERSE); tem->tvs_outbuf[tem->tvs_outindex].tc_char = ch | TEM_ATTR(attr); tem->tvs_outbuf[tem->tvs_outindex].tc_fg_color = fg; tem->tvs_outbuf[tem->tvs_outindex].tc_bg_color = bg; tem->tvs_outindex++; tem->tvs_c_cursor.col++; if (tem->tvs_c_cursor.col >= tems.ts_c_dimension.width) { tem_safe_send_data(tem, credp, called_from); tem_safe_new_line(tem, credp, called_from); } } static void tem_safe_new_line(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { tem_safe_cr(tem); tem_safe_lf(tem, credp, called_from); } static void tem_safe_cr(struct tem_vt_state *tem) { tem->tvs_c_cursor.col = 0; tem_safe_align_cursor(tem); } static void tem_safe_lf(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int row; ASSERT((called_from == CALLED_FROM_STANDALONE) || MUTEX_HELD(&tem->tvs_lock)); /* * Sanity checking notes: * . a_nscroll was validated when it was set. * . Regardless of that, tem_safe_scroll and tem_safe_mv_cursor * will prevent anything bad from happening. */ row = tem->tvs_c_cursor.row + 1; if (row >= tems.ts_c_dimension.height) { if (tem->tvs_nscroll != 0) { tem_safe_scroll(tem, 0, tems.ts_c_dimension.height - 1, tem->tvs_nscroll, TEM_SCROLL_UP, credp, called_from); row = tems.ts_c_dimension.height - tem->tvs_nscroll; } else { /* no scroll */ /* * implement Esc[#r when # is zero. This means no * scroll but just return cursor to top of screen, * do not clear screen. */ row = 0; } } tem_safe_mv_cursor(tem, row, tem->tvs_c_cursor.col, credp, called_from); if (tem->tvs_nscroll == 0) { /* erase rest of cursor line */ tem_safe_clear_chars(tem, tems.ts_c_dimension.width - tem->tvs_c_cursor.col, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, credp, called_from); } tem_safe_align_cursor(tem); } static void tem_safe_send_data(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { ASSERT((called_from == CALLED_FROM_STANDALONE) || MUTEX_HELD(&tem->tvs_lock)); if (tem->tvs_outindex == 0) { tem_safe_align_cursor(tem); return; } tem_safe_virtual_display(tem, tem->tvs_outbuf, tem->tvs_outindex, tem->tvs_s_cursor.row, tem->tvs_s_cursor.col); if (tem->tvs_isactive) { /* * Call the primitive to render this data. */ tem_safe_callback_display(tem, tem->tvs_outbuf, tem->tvs_outindex, tem->tvs_s_cursor.row, tem->tvs_s_cursor.col, credp, called_from); } tem->tvs_outindex = 0; tem_safe_align_cursor(tem); } /* * We have just done something to the current output point. Reset the start * point for the buffered data in a_outbuf. There shouldn't be any data * buffered yet. */ static void tem_safe_align_cursor(struct tem_vt_state *tem) { tem->tvs_s_cursor.row = tem->tvs_c_cursor.row; tem->tvs_s_cursor.col = tem->tvs_c_cursor.col; } /* * State machine parser based on the current state and character input * major terminations are to control character or normal character */ static void tem_safe_parse(struct tem_vt_state *tem, tem_char_t ch, cred_t *credp, enum called_from called_from) { int i; ASSERT((called_from == CALLED_FROM_STANDALONE) || MUTEX_HELD(&tem->tvs_lock)); if (tem->tvs_state == A_STATE_START) { /* Normal state? */ if (ch == A_CSI || ch == A_ESC || ch < ' ') { /* Control */ tem_safe_control(tem, ch, credp, called_from); } else { /* Display */ tem_safe_outch(tem, ch, credp, called_from); } return; } /* In sequence */ if (tem->tvs_state != A_STATE_ESC) { /* Need to get parameters? */ if (tem->tvs_state != A_STATE_CSI) { tem_safe_getparams(tem, ch, credp, called_from); return; } switch (ch) { case '?': tem->tvs_state = A_STATE_CSI_QMARK; return; case '=': tem->tvs_state = A_STATE_CSI_EQUAL; return; case 's': /* * As defined below, this sequence * saves the cursor. However, Sun * defines ESC[s as reset. We resolved * the conflict by selecting reset as it * is exported in the termcap file for * sun-mon, while the "save cursor" * definition does not exist anywhere in * /etc/termcap. * However, having no coherent * definition of reset, we have not * implemented it. */ /* * Original code * tem->tvs_r_cursor.row = tem->tvs_c_cursor.row; * tem->tvs_r_cursor.col = tem->tvs_c_cursor.col; * tem->tvs_state = A_STATE_START; */ tem->tvs_state = A_STATE_START; return; case 'u': tem_safe_mv_cursor(tem, tem->tvs_r_cursor.row, tem->tvs_r_cursor.col, credp, called_from); tem->tvs_state = A_STATE_START; return; case 'p': /* sunbow */ tem_safe_send_data(tem, credp, called_from); /* * Don't set anything if we are * already as we want to be. */ if (tem->tvs_flags & TEM_ATTR_SCREEN_REVERSE) { tem->tvs_flags &= ~TEM_ATTR_SCREEN_REVERSE; /* * If we have switched the characters to be the * inverse from the screen, then switch them as * well to keep them the inverse of the screen. */ if (tem->tvs_flags & TEM_ATTR_REVERSE) tem->tvs_flags &= ~TEM_ATTR_REVERSE; else tem->tvs_flags |= TEM_ATTR_REVERSE; } tem_safe_cls(tem, credp, called_from); tem->tvs_state = A_STATE_START; return; case 'q': /* sunwob */ tem_safe_send_data(tem, credp, called_from); /* * Don't set anything if we are * already where as we want to be. */ if (!(tem->tvs_flags & TEM_ATTR_SCREEN_REVERSE)) { tem->tvs_flags |= TEM_ATTR_SCREEN_REVERSE; /* * If we have switched the characters to be the * inverse from the screen, then switch them as * well to keep them the inverse of the screen. */ if (!(tem->tvs_flags & TEM_ATTR_REVERSE)) tem->tvs_flags |= TEM_ATTR_REVERSE; else tem->tvs_flags &= ~TEM_ATTR_REVERSE; } tem_safe_cls(tem, credp, called_from); tem->tvs_state = A_STATE_START; return; case 'r': /* sunscrl */ /* * Rule exception: check for validity here. */ tem->tvs_nscroll = tem->tvs_paramval; if (tem->tvs_nscroll > tems.ts_c_dimension.height) tem->tvs_nscroll = tems.ts_c_dimension.height; if (tem->tvs_nscroll < 0) tem->tvs_nscroll = 1; tem->tvs_state = A_STATE_START; return; default: tem_safe_getparams(tem, ch, credp, called_from); return; } } /* Previous char was */ if (ch == '[') { tem->tvs_curparam = 0; tem->tvs_paramval = 0; tem->tvs_gotparam = B_FALSE; /* clear the parameters */ for (i = 0; i < TEM_MAXPARAMS; i++) tem->tvs_params[i] = -1; tem->tvs_state = A_STATE_CSI; } else if (ch == 'Q') { /* Q ? */ tem->tvs_state = A_STATE_START; } else if (ch == 'C') { /* C ? */ tem->tvs_state = A_STATE_START; } else { tem->tvs_state = A_STATE_START; if (ch == 'c') { /* ESC c resets display */ tem_safe_reset_display(tem, credp, called_from, B_TRUE, B_TRUE); } else if (ch == 'H') { /* ESC H sets a tab */ tem_safe_set_tab(tem); } else if (ch == '7') { /* ESC 7 Save Cursor position */ tem->tvs_r_cursor.row = tem->tvs_c_cursor.row; tem->tvs_r_cursor.col = tem->tvs_c_cursor.col; } else if (ch == '8') { /* ESC 8 Restore Cursor position */ tem_safe_mv_cursor(tem, tem->tvs_r_cursor.row, tem->tvs_r_cursor.col, credp, called_from); /* check for control chars */ } else if (ch < ' ') { tem_safe_control(tem, ch, credp, called_from); } else { tem_safe_outch(tem, ch, credp, called_from); } } } /* ARGSUSED */ static void tem_safe_bell(struct tem_vt_state *tem, enum called_from called_from) { if (called_from == CALLED_FROM_STANDALONE) (void) beep_polled(BEEP_CONSOLE); else (void) beep(BEEP_CONSOLE); } static void tem_safe_scroll(struct tem_vt_state *tem, int start, int end, int count, int direction, cred_t *credp, enum called_from called_from) { int row; int lines_affected; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); lines_affected = end - start + 1; if (count > lines_affected) count = lines_affected; if (count <= 0) return; switch (direction) { case TEM_SCROLL_UP: if (count < lines_affected) { tem_safe_copy_area(tem, 0, start + count, tems.ts_c_dimension.width - 1, end, 0, start, credp, called_from); } for (row = (end - count) + 1; row <= end; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } break; case TEM_SCROLL_DOWN: if (count < lines_affected) { tem_safe_copy_area(tem, 0, start, tems.ts_c_dimension.width - 1, end - count, 0, start + count, credp, called_from); } for (row = start; row < start + count; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } break; } } static int tem_copy_width(term_char_t *src, term_char_t *dst, int cols) { int width = cols - 1; while (width >= 0) { /* We can't compare images. */ if (TEM_CHAR_ATTR(src[width].tc_char) == TEM_ATTR_IMAGE || TEM_CHAR_ATTR(dst[width].tc_char) == TEM_ATTR_IMAGE) break; /* * Find difference on line, compare char with its attributes * and colors. */ if (src[width].tc_char != dst[width].tc_char || src[width].tc_fg_color != dst[width].tc_fg_color || src[width].tc_bg_color != dst[width].tc_bg_color) { break; } width--; } return (width + 1); } static void tem_safe_copy_area(struct tem_vt_state *tem, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row, cred_t *credp, enum called_from called_from) { size_t soffset, toffset; term_char_t *src, *dst; int rows; int cols; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (s_col < 0 || s_row < 0 || e_col < 0 || e_row < 0 || t_col < 0 || t_row < 0 || s_col >= tems.ts_c_dimension.width || e_col >= tems.ts_c_dimension.width || t_col >= tems.ts_c_dimension.width || s_row >= tems.ts_c_dimension.height || e_row >= tems.ts_c_dimension.height || t_row >= tems.ts_c_dimension.height) return; if (s_row > e_row || s_col > e_col) return; rows = e_row - s_row + 1; cols = e_col - s_col + 1; if (t_row + rows > tems.ts_c_dimension.height || t_col + cols > tems.ts_c_dimension.width) return; soffset = s_col + s_row * tems.ts_c_dimension.width; toffset = t_col + t_row * tems.ts_c_dimension.width; src = tem->tvs_screen_buf + soffset; dst = tem->tvs_screen_buf + toffset; /* * Copy line by line. We determine the length by comparing the * screen content from cached text in tvs_screen_buf. */ if (toffset <= soffset) { for (int i = 0; i < rows; i++) { int increment = i * tems.ts_c_dimension.width; int width; width = tem_copy_width(src + increment, dst + increment, cols); tem_safe_virtual_copy(tem, s_col, s_row + i, e_col - cols + width, s_row + i, t_col, t_row + i); if (tem->tvs_isactive) { tem_safe_callback_copy(tem, s_col, s_row + i, e_col - cols + width, s_row + i, t_col, t_row + i, credp, called_from); } } } else { for (int i = rows - 1; i >= 0; i--) { int increment = i * tems.ts_c_dimension.width; int width; width = tem_copy_width(src + increment, dst + increment, cols); tem_safe_virtual_copy(tem, s_col, s_row + i, e_col - cols + width, s_row + i, t_col, t_row + i); if (tem->tvs_isactive) { tem_safe_callback_copy(tem, s_col, s_row + i, e_col - cols + width, s_row + i, t_col, t_row + i, credp, called_from); } } } } static void tem_safe_clear_chars(struct tem_vt_state *tem, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (row < 0 || row >= tems.ts_c_dimension.height || col < 0 || col >= tems.ts_c_dimension.width || count < 0) return; /* * Note that very large values of "count" could cause col+count * to overflow, so we check "count" independently. */ if (count > tems.ts_c_dimension.width || col + count > tems.ts_c_dimension.width) count = tems.ts_c_dimension.width - col; tem_safe_virtual_cls(tem, count, row, col); if (!tem->tvs_isactive) return; tem_safe_callback_cls(tem, count, row, col, credp, called_from); } /*ARGSUSED*/ void tem_safe_text_display(struct tem_vt_state *tem, term_char_t *string, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { struct vis_consdisplay da; int i; tem_char_t c; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); da.data = (uint8_t *)&c; da.width = 1; da.row = row; da.col = col; for (i = 0; i < count; i++) { tem_safe_get_color(&da.fg_color, &da.bg_color, string[i]); c = TEM_CHAR(string[i].tc_char); tems_safe_display(&da, credp, called_from); da.col++; } } /* * This function is used to blit a rectangular color image, * unperturbed on the underlying framebuffer, to render * icons and pictures. The data is a pixel pattern that * fills a rectangle bounded to the width and height parameters. * The color pixel data must to be pre-adjusted by the caller * for the current video depth. * * This function is unused now. */ /*ARGSUSED*/ static void tem_safe_image_display(struct tem_vt_state *tem, uchar_t *image, int height, int width, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { struct vis_consdisplay da; mutex_enter(&tems.ts_lock); mutex_enter(&tem->tvs_lock); da.data = image; da.width = (screen_size_t)width; da.height = (screen_size_t)height; da.row = row; da.col = col; tems_safe_display(&da, credp, called_from); mutex_exit(&tem->tvs_lock); mutex_exit(&tems.ts_lock); } /*ARGSUSED*/ void tem_safe_text_copy(struct tem_vt_state *tem, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row, cred_t *credp, enum called_from called_from) { struct vis_conscopy da; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); da.s_row = s_row; da.s_col = s_col; da.e_row = e_row; da.e_col = e_col; da.t_row = t_row; da.t_col = t_col; tems_safe_copy(&da, credp, called_from); } void tem_safe_text_cls(struct tem_vt_state *tem, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { text_attr_t attr; term_char_t c; int i; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tem_safe_get_attr(tem, &c.tc_fg_color, &c.tc_bg_color, &attr, TEM_ATTR_SCREEN_REVERSE); c.tc_char = TEM_ATTR(attr & ~TEM_ATTR_UNDERLINE) | ' '; if (count > tems.ts_c_dimension.width || col + count > tems.ts_c_dimension.width) count = tems.ts_c_dimension.width - col; for (i = 0; i < count; i++) tems.ts_blank_line[i] = c; tem_safe_text_display(tem, tems.ts_blank_line, count, row, col, credp, called_from); } void tem_safe_pix_display(struct tem_vt_state *tem, term_char_t *string, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { struct vis_consdisplay da; int i; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); da.data = (uchar_t *)tem->tvs_pix_data; da.width = (screen_size_t)tems.ts_font.vf_width; da.height = (screen_size_t)tems.ts_font.vf_height; da.row = (row * da.height) + tems.ts_p_offset.y; da.col = (col * da.width) + tems.ts_p_offset.x; for (i = 0; i < count; i++) { /* Do not display image area */ if (!TEM_ATTR_ISSET(string[i].tc_char, TEM_ATTR_IMAGE)) { tem_safe_callback_bit2pix(tem, string[i]); tems_safe_display(&da, credp, called_from); } da.col += da.width; } } void tem_safe_pix_copy(struct tem_vt_state *tem, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row, cred_t *credp, enum called_from called_from) { struct vis_conscopy ma; static boolean_t need_clear = B_TRUE; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (need_clear && tem->tvs_first_line > 0) { /* * Clear OBP output above our kernel console term * when our kernel console term begins to scroll up, * we hope it is user friendly. * (Also see comments on tem_safe_pix_clear_prom_output) * * This is only one time call. */ tem_safe_pix_clear_prom_output(tem, credp, called_from); } need_clear = B_FALSE; ma.s_row = s_row * tems.ts_font.vf_height + tems.ts_p_offset.y; ma.e_row = (e_row + 1) * tems.ts_font.vf_height + tems.ts_p_offset.y - 1; ma.t_row = t_row * tems.ts_font.vf_height + tems.ts_p_offset.y; /* * Check if we're in process of clearing OBP's columns area, * which only happens when term scrolls up a whole line. */ if (tem->tvs_first_line > 0 && t_row < s_row && t_col == 0 && e_col == tems.ts_c_dimension.width - 1) { /* * We need to clear OBP's columns area outside our kernel * console term. So that we set ma.e_col to entire row here. */ ma.s_col = s_col * tems.ts_font.vf_width; ma.e_col = tems.ts_p_dimension.width - 1; ma.t_col = t_col * tems.ts_font.vf_width; } else { ma.s_col = s_col * tems.ts_font.vf_width + tems.ts_p_offset.x; ma.e_col = (e_col + 1) * tems.ts_font.vf_width + tems.ts_p_offset.x - 1; ma.t_col = t_col * tems.ts_font.vf_width + tems.ts_p_offset.x; } tems_safe_copy(&ma, credp, called_from); if (tem->tvs_first_line > 0 && t_row < s_row) { /* We have scrolled up (s_row - t_row) rows. */ tem->tvs_first_line -= (s_row - t_row); if (tem->tvs_first_line <= 0) { /* All OBP rows have been cleared. */ tem->tvs_first_line = 0; } } } void tem_safe_pix_bit2pix(struct tem_vt_state *tem, term_char_t c) { text_color_t fg, bg; void (*fp)(struct tem_vt_state *, tem_char_t, unsigned char, unsigned char); tem_safe_get_color(&fg, &bg, c); switch (tems.ts_pdepth) { case 4: fp = bit_to_pix4; break; case 8: fp = bit_to_pix8; break; case 15: case 16: fp = bit_to_pix16; break; case 24: fp = bit_to_pix24; break; case 32: fp = bit_to_pix32; break; default: return; } fp(tem, c.tc_char, fg, bg); } /* * This function only clears count of columns in one row */ void tem_safe_pix_cls(struct tem_vt_state *tem, int count, screen_pos_t row, screen_pos_t col, cred_t *credp, enum called_from called_from) { ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tem_safe_pix_cls_range(tem, row, 1, tems.ts_p_offset.y, col, count, tems.ts_p_offset.x, B_FALSE, credp, called_from); } /* * This function clears OBP output above our kernel console term area * because OBP's term may have a bigger terminal window than that of * our kernel console term. So we need to clear OBP output garbage outside * of our kernel console term at a proper time, which is when the first * row output of our kernel console term scrolls at the first screen line. * * _________________________________ * | _____________________ | ---> OBP's bigger term window * | | | | * |___| | | * | | | | | * | | | | | * |_|_|___________________|_______| * | | | ---> first line * | |___________________|---> our kernel console term window * | * |---> columns area to be cleared * * This function only takes care of the output above our kernel console term, * and tem_prom_scroll_up takes care of columns area outside of our kernel * console term. */ static void tem_safe_pix_clear_prom_output(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int nrows, ncols, width, height, offset; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); width = tems.ts_font.vf_width; height = tems.ts_font.vf_height; offset = tems.ts_p_offset.y % height; nrows = tems.ts_p_offset.y / height; ncols = (tems.ts_p_dimension.width + (width - 1))/ width; if (nrows > 0) tem_safe_pix_cls_range(tem, 0, nrows, offset, 0, ncols, 0, B_FALSE, credp, called_from); } /* * clear the whole screen for pixel mode, just clear the * physical screen. */ void tem_safe_pix_clear_entire_screen(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { struct vis_consclear cl; text_color_t fg_color; text_color_t bg_color; text_attr_t attr; term_char_t c; int nrows, ncols, width, height; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); /* call driver first, if error, clear terminal area */ tem_safe_get_attr(tem, &c.tc_fg_color, &c.tc_bg_color, &attr, TEM_ATTR_SCREEN_REVERSE); c.tc_char = TEM_ATTR(attr); tem_safe_get_color(&fg_color, &bg_color, c); cl.bg_color = bg_color; if (tems_cls_layered(&cl, credp) == 0) return; width = tems.ts_font.vf_width; height = tems.ts_font.vf_height; nrows = (tems.ts_p_dimension.height + (height - 1))/ height; ncols = (tems.ts_p_dimension.width + (width - 1))/ width; tem_safe_pix_cls_range(tem, 0, nrows, tems.ts_p_offset.y, 0, ncols, tems.ts_p_offset.x, B_FALSE, credp, called_from); /* * Since the whole screen is cleared, we don't need * to clear OBP output later. */ if (tem->tvs_first_line > 0) tem->tvs_first_line = 0; } /* * clear the whole screen, including the virtual screen buffer, * and reset the cursor to start point. */ static void tem_safe_cls(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int row; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (tems.ts_display_mode == VIS_TEXT) { for (row = 0; row < tems.ts_c_dimension.height; row++) { tem_safe_clear_chars(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } tem->tvs_c_cursor.row = 0; tem->tvs_c_cursor.col = 0; tem_safe_align_cursor(tem); return; } ASSERT(tems.ts_display_mode == VIS_PIXEL); for (row = 0; row < tems.ts_c_dimension.height; row++) { tem_safe_virtual_cls(tem, tems.ts_c_dimension.width, row, 0); } tem->tvs_c_cursor.row = 0; tem->tvs_c_cursor.col = 0; tem_safe_align_cursor(tem); if (!tem->tvs_isactive) return; tem_safe_pix_clear_entire_screen(tem, credp, called_from); } static void tem_safe_back_tab(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int i; screen_pos_t tabstop; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tabstop = 0; for (i = tem->tvs_ntabs - 1; i >= 0; i--) { if (tem->tvs_tabs[i] < tem->tvs_c_cursor.col) { tabstop = tem->tvs_tabs[i]; break; } } tem_safe_mv_cursor(tem, tem->tvs_c_cursor.row, tabstop, credp, called_from); } static void tem_safe_tab(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int i; screen_pos_t tabstop; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tabstop = tems.ts_c_dimension.width - 1; for (i = 0; i < tem->tvs_ntabs; i++) { if (tem->tvs_tabs[i] > tem->tvs_c_cursor.col) { tabstop = tem->tvs_tabs[i]; break; } } tem_safe_mv_cursor(tem, tem->tvs_c_cursor.row, tabstop, credp, called_from); } static void tem_safe_set_tab(struct tem_vt_state *tem) { int i; int j; if (tem->tvs_ntabs == TEM_MAXTAB) return; if (tem->tvs_ntabs == 0 || tem->tvs_tabs[tem->tvs_ntabs] < tem->tvs_c_cursor.col) { tem->tvs_tabs[tem->tvs_ntabs++] = tem->tvs_c_cursor.col; return; } for (i = 0; i < tem->tvs_ntabs; i++) { if (tem->tvs_tabs[i] == tem->tvs_c_cursor.col) return; if (tem->tvs_tabs[i] > tem->tvs_c_cursor.col) { for (j = tem->tvs_ntabs - 1; j >= i; j--) tem->tvs_tabs[j+ 1] = tem->tvs_tabs[j]; tem->tvs_tabs[i] = tem->tvs_c_cursor.col; tem->tvs_ntabs++; return; } } } static void tem_safe_clear_tabs(struct tem_vt_state *tem, int action) { int i; int j; switch (action) { case 3: /* clear all tabs */ tem->tvs_ntabs = 0; break; case 0: /* clr tab at cursor */ for (i = 0; i < tem->tvs_ntabs; i++) { if (tem->tvs_tabs[i] == tem->tvs_c_cursor.col) { tem->tvs_ntabs--; for (j = i; j < tem->tvs_ntabs; j++) tem->tvs_tabs[j] = tem->tvs_tabs[j + 1]; return; } } break; } } static void tem_safe_mv_cursor(struct tem_vt_state *tem, int row, int col, cred_t *credp, enum called_from called_from) { ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); /* * Sanity check and bounds enforcement. Out of bounds requests are * clipped to the screen boundaries. This seems to be what SPARC * does. */ if (row < 0) row = 0; if (row >= tems.ts_c_dimension.height) row = tems.ts_c_dimension.height - 1; if (col < 0) col = 0; if (col >= tems.ts_c_dimension.width) col = tems.ts_c_dimension.width - 1; tem_safe_send_data(tem, credp, called_from); tem->tvs_c_cursor.row = (screen_pos_t)row; tem->tvs_c_cursor.col = (screen_pos_t)col; tem_safe_align_cursor(tem); } /* ARGSUSED */ void tem_safe_reset_emulator(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from, boolean_t init_color) { int j; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tem->tvs_c_cursor.row = 0; tem->tvs_c_cursor.col = 0; tem->tvs_r_cursor.row = 0; tem->tvs_r_cursor.col = 0; tem->tvs_s_cursor.row = 0; tem->tvs_s_cursor.col = 0; tem->tvs_outindex = 0; tem->tvs_state = A_STATE_START; tem->tvs_gotparam = B_FALSE; tem->tvs_curparam = 0; tem->tvs_paramval = 0; tem->tvs_nscroll = 1; if (init_color) { /* use initial settings */ tem->tvs_fg_color = tems.ts_init_color.fg_color; tem->tvs_bg_color = tems.ts_init_color.bg_color; tem->tvs_flags = tems.ts_init_color.a_flags; } /* * set up the initial tab stops */ tem->tvs_ntabs = 0; for (j = 8; j < tems.ts_c_dimension.width; j += 8) tem->tvs_tabs[tem->tvs_ntabs++] = (screen_pos_t)j; for (j = 0; j < TEM_MAXPARAMS; j++) tem->tvs_params[j] = 0; } void tem_safe_reset_display(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from, boolean_t clear_txt, boolean_t init_color) { ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); tem_safe_reset_emulator(tem, credp, called_from, init_color); if (clear_txt) { if (tem->tvs_isactive) tem_safe_callback_cursor(tem, VIS_HIDE_CURSOR, credp, called_from); tem_safe_cls(tem, credp, called_from); if (tem->tvs_isactive) tem_safe_callback_cursor(tem, VIS_DISPLAY_CURSOR, credp, called_from); } } static void tem_safe_shift( struct tem_vt_state *tem, int count, int direction, cred_t *credp, enum called_from called_from) { int rest_of_line; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); rest_of_line = tems.ts_c_dimension.width - tem->tvs_c_cursor.col; if (count > rest_of_line) count = rest_of_line; if (count <= 0) return; switch (direction) { case TEM_SHIFT_LEFT: if (count < rest_of_line) { tem_safe_copy_area(tem, tem->tvs_c_cursor.col + count, tem->tvs_c_cursor.row, tems.ts_c_dimension.width - 1, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, tem->tvs_c_cursor.row, credp, called_from); } tem_safe_clear_chars(tem, count, tem->tvs_c_cursor.row, (tems.ts_c_dimension.width - count), credp, called_from); break; case TEM_SHIFT_RIGHT: if (count < rest_of_line) { tem_safe_copy_area(tem, tem->tvs_c_cursor.col, tem->tvs_c_cursor.row, tems.ts_c_dimension.width - count - 1, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col + count, tem->tvs_c_cursor.row, credp, called_from); } tem_safe_clear_chars(tem, count, tem->tvs_c_cursor.row, tem->tvs_c_cursor.col, credp, called_from); break; } } void tem_safe_text_cursor(struct tem_vt_state *tem, short action, cred_t *credp, enum called_from called_from) { struct vis_conscursor ca; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); ca.row = tem->tvs_c_cursor.row; ca.col = tem->tvs_c_cursor.col; ca.action = action; tems_safe_cursor(&ca, credp, called_from); if (action == VIS_GET_CURSOR) { tem->tvs_c_cursor.row = ca.row; tem->tvs_c_cursor.col = ca.col; } } void tem_safe_pix_cursor(struct tem_vt_state *tem, short action, cred_t *credp, enum called_from called_from) { struct vis_conscursor ca; uint32_t color; text_color_t fg, bg; term_char_t c; text_attr_t attr; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); ca.row = tem->tvs_c_cursor.row * tems.ts_font.vf_height + tems.ts_p_offset.y; ca.col = tem->tvs_c_cursor.col * tems.ts_font.vf_width + tems.ts_p_offset.x; ca.width = (screen_size_t)tems.ts_font.vf_width; ca.height = (screen_size_t)tems.ts_font.vf_height; tem_safe_get_attr(tem, &c.tc_fg_color, &c.tc_bg_color, &attr, TEM_ATTR_REVERSE); c.tc_char = TEM_ATTR(attr); tem_safe_get_color(&fg, &bg, c); switch (tems.ts_pdepth) { case 4: case 8: ca.fg_color.mono = fg; ca.bg_color.mono = bg; break; case 15: case 16: color = tems.ts_color_map(fg); ca.fg_color.sixteen[0] = (color >> 8) & 0xFF; ca.fg_color.sixteen[1] = color & 0xFF; color = tems.ts_color_map(bg); ca.bg_color.sixteen[0] = (color >> 8) & 0xFF; ca.bg_color.sixteen[1] = color & 0xFF; break; case 24: case 32: #ifdef _HAVE_TEM_FIRMWARE /* Keeping this block to support old binary only drivers */ if (tem->tvs_flags & TEM_ATTR_REVERSE) { ca.fg_color.twentyfour[0] = TEM_TEXT_WHITE24_RED; ca.fg_color.twentyfour[1] = TEM_TEXT_WHITE24_GREEN; ca.fg_color.twentyfour[2] = TEM_TEXT_WHITE24_BLUE; ca.bg_color.twentyfour[0] = TEM_TEXT_BLACK24_RED; ca.bg_color.twentyfour[1] = TEM_TEXT_BLACK24_GREEN; ca.bg_color.twentyfour[2] = TEM_TEXT_BLACK24_BLUE; } else { ca.fg_color.twentyfour[0] = TEM_TEXT_BLACK24_RED; ca.fg_color.twentyfour[1] = TEM_TEXT_BLACK24_GREEN; ca.fg_color.twentyfour[2] = TEM_TEXT_BLACK24_BLUE; ca.bg_color.twentyfour[0] = TEM_TEXT_WHITE24_RED; ca.bg_color.twentyfour[1] = TEM_TEXT_WHITE24_GREEN; ca.bg_color.twentyfour[2] = TEM_TEXT_WHITE24_BLUE; } #else color = tems.ts_color_map(fg); ca.fg_color.twentyfour[0] = (color >> 16) & 0xFF; ca.fg_color.twentyfour[1] = (color >> 8) & 0xFF; ca.fg_color.twentyfour[2] = color & 0xFF; color = tems.ts_color_map(bg); ca.bg_color.twentyfour[0] = (color >> 16) & 0xFF; ca.bg_color.twentyfour[1] = (color >> 8) & 0xFF; ca.bg_color.twentyfour[2] = color & 0xFF; break; #endif } ca.action = action; tems_safe_cursor(&ca, credp, called_from); if (action == VIS_GET_CURSOR) { tem->tvs_c_cursor.row = 0; tem->tvs_c_cursor.col = 0; if (ca.row != 0) { tem->tvs_c_cursor.row = (ca.row - tems.ts_p_offset.y) / tems.ts_font.vf_height; } if (ca.col != 0) { tem->tvs_c_cursor.col = (ca.col - tems.ts_p_offset.x) / tems.ts_font.vf_width; } } } static void bit_to_pix4(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color) { uint8_t *dest = (uint8_t *)tem->tvs_pix_data; font_bit_to_pix4(&tems.ts_font, dest, c, fg_color, bg_color); } static void bit_to_pix8(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color, text_color_t bg_color) { uint8_t *dest = (uint8_t *)tem->tvs_pix_data; font_bit_to_pix8(&tems.ts_font, dest, c, fg_color, bg_color); } static void bit_to_pix16(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color4, text_color_t bg_color4) { uint16_t fg_color16, bg_color16; uint16_t *dest; ASSERT(fg_color4 < 16 && bg_color4 < 16); fg_color16 = (uint16_t)tems.ts_color_map(fg_color4); bg_color16 = (uint16_t)tems.ts_color_map(bg_color4); dest = (uint16_t *)tem->tvs_pix_data; font_bit_to_pix16(&tems.ts_font, dest, c, fg_color16, bg_color16); } static void bit_to_pix24(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color4, text_color_t bg_color4) { uint32_t fg_color32, bg_color32; uint8_t *dest; #ifdef _HAVE_TEM_FIRMWARE fg_color32 = PIX4TO32(fg_color4); bg_color32 = PIX4TO32(bg_color4); #else fg_color32 = tems.ts_color_map(fg_color4); bg_color32 = tems.ts_color_map(bg_color4); #endif dest = (uint8_t *)tem->tvs_pix_data; font_bit_to_pix24(&tems.ts_font, dest, c, fg_color32, bg_color32); } static void bit_to_pix32(struct tem_vt_state *tem, tem_char_t c, text_color_t fg_color4, text_color_t bg_color4) { uint32_t fg_color32, bg_color32, *dest; #ifdef _HAVE_TEM_FIRMWARE fg_color32 = PIX4TO32(fg_color4); bg_color32 = PIX4TO32(bg_color4); #else fg_color32 = ((uint32_t)0xFF << 24) | tems.ts_color_map(fg_color4); bg_color32 = ((uint32_t)0xFF << 24) | tems.ts_color_map(bg_color4); #endif dest = (uint32_t *)tem->tvs_pix_data; font_bit_to_pix32(&tems.ts_font, dest, c, fg_color32, bg_color32); } /* * flag: TEM_ATTR_SCREEN_REVERSE or TEM_ATTR_REVERSE */ void tem_safe_get_attr(struct tem_vt_state *tem, text_color_t *fg, text_color_t *bg, text_attr_t *attr, uint8_t flag) { if (tem->tvs_flags & flag) { *fg = tem->tvs_bg_color; *bg = tem->tvs_fg_color; } else { *fg = tem->tvs_fg_color; *bg = tem->tvs_bg_color; } if (attr == NULL) return; *attr = tem->tvs_flags; } static void tem_safe_get_color(text_color_t *fg, text_color_t *bg, term_char_t c) { *fg = c.tc_fg_color; *bg = c.tc_bg_color; if (c.tc_fg_color < 16) { if (TEM_ATTR_ISSET(c.tc_char, TEM_ATTR_BRIGHT_FG | TEM_ATTR_BOLD)) *fg = brt_xlate[c.tc_fg_color]; else *fg = dim_xlate[c.tc_fg_color]; } if (c.tc_bg_color < 16) { if (TEM_ATTR_ISSET(c.tc_char, TEM_ATTR_BRIGHT_BG)) *bg = brt_xlate[c.tc_bg_color]; else *bg = dim_xlate[c.tc_bg_color]; } } /* * Clear a rectangle of screen for pixel mode. * * arguments: * row: start row# * nrows: the number of rows to clear * offset_y: the offset of height in pixels to begin clear * col: start col# * ncols: the number of cols to clear * offset_x: the offset of width in pixels to begin clear * scroll_up: whether this function is called during sroll up, * which is called only once. */ void tem_safe_pix_cls_range(struct tem_vt_state *tem, screen_pos_t row, int nrows, int offset_y, screen_pos_t col, int ncols, int offset_x, boolean_t sroll_up, cred_t *credp, enum called_from called_from) { struct vis_consdisplay da; int i, j; int row_add = 0; term_char_t c; text_attr_t attr; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (sroll_up) row_add = tems.ts_c_dimension.height - 1; da.width = (screen_size_t)tems.ts_font.vf_width; da.height = (screen_size_t)tems.ts_font.vf_height; tem_safe_get_attr(tem, &c.tc_fg_color, &c.tc_bg_color, &attr, TEM_ATTR_SCREEN_REVERSE); /* Make sure we will not draw underlines */ c.tc_char = TEM_ATTR(attr & ~TEM_ATTR_UNDERLINE) | ' '; tem_safe_callback_bit2pix(tem, c); da.data = (uchar_t *)tem->tvs_pix_data; for (i = 0; i < nrows; i++, row++) { da.row = (row + row_add) * da.height + offset_y; da.col = col * da.width + offset_x; for (j = 0; j < ncols; j++) { tems_safe_display(&da, credp, called_from); da.col += da.width; } } } /* * virtual screen operations */ static void tem_safe_virtual_display(struct tem_vt_state *tem, term_char_t *string, int count, screen_pos_t row, screen_pos_t col) { int i, width; term_char_t *addr; if (row < 0 || row >= tems.ts_c_dimension.height || col < 0 || col >= tems.ts_c_dimension.width || col + count > tems.ts_c_dimension.width) return; width = tems.ts_c_dimension.width; addr = tem->tvs_screen_buf + (row * width + col); for (i = 0; i < count; i++) { *addr++ = string[i]; } } static void i_virtual_copy_tem_chars(term_char_t *base, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row) { term_char_t *from; term_char_t *to; int cnt; screen_size_t chars_per_row; term_char_t *to_row_start; term_char_t *from_row_start; screen_size_t rows_to_move; int cols = tems.ts_c_dimension.width; chars_per_row = e_col - s_col + 1; rows_to_move = e_row - s_row + 1; to_row_start = base + ((t_row * cols) + t_col); from_row_start = base + ((s_row * cols) + s_col); if (to_row_start < from_row_start) { while (rows_to_move-- > 0) { to = to_row_start; from = from_row_start; to_row_start += cols; from_row_start += cols; for (cnt = chars_per_row; cnt-- > 0; ) *to++ = *from++; } } else { /* * Offset to the end of the region and copy backwards. */ cnt = rows_to_move * cols + chars_per_row; to_row_start += cnt; from_row_start += cnt; while (rows_to_move-- > 0) { to_row_start -= cols; from_row_start -= cols; to = to_row_start; from = from_row_start; for (cnt = chars_per_row; cnt-- > 0; ) *--to = *--from; } } } static void tem_safe_virtual_copy(struct tem_vt_state *tem, screen_pos_t s_col, screen_pos_t s_row, screen_pos_t e_col, screen_pos_t e_row, screen_pos_t t_col, screen_pos_t t_row) { screen_size_t chars_per_row; screen_size_t rows_to_move; int rows = tems.ts_c_dimension.height; int cols = tems.ts_c_dimension.width; if (s_col < 0 || s_col >= cols || s_row < 0 || s_row >= rows || e_col < 0 || e_col >= cols || e_row < 0 || e_row >= rows || t_col < 0 || t_col >= cols || t_row < 0 || t_row >= rows || s_col > e_col || s_row > e_row) return; chars_per_row = e_col - s_col + 1; rows_to_move = e_row - s_row + 1; /* More sanity checks. */ if (t_row + rows_to_move > rows || t_col + chars_per_row > cols) return; i_virtual_copy_tem_chars(tem->tvs_screen_buf, s_col, s_row, e_col, e_row, t_col, t_row); } static void tem_safe_virtual_cls(struct tem_vt_state *tem, int count, screen_pos_t row, screen_pos_t col) { int i; text_attr_t attr; term_char_t c; tem_safe_get_attr(tem, &c.tc_fg_color, &c.tc_bg_color, &attr, TEM_ATTR_SCREEN_REVERSE); c.tc_char = TEM_ATTR(attr & ~TEM_ATTR_UNDERLINE) | ' '; for (i = 0; i < tems.ts_c_dimension.width; i++) tems.ts_blank_line[i] = c; tem_safe_virtual_display(tem, tems.ts_blank_line, count, row, col); } /* * only blank screen, not clear our screen buffer */ void tem_safe_blank_screen(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int row; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (tems.ts_display_mode == VIS_PIXEL) { tem_safe_pix_clear_entire_screen(tem, credp, called_from); return; } for (row = 0; row < tems.ts_c_dimension.height; row++) { tem_safe_callback_cls(tem, tems.ts_c_dimension.width, row, 0, credp, called_from); } } /* * unblank screen with associated tem from its screen buffer */ void tem_safe_unblank_screen(struct tem_vt_state *tem, cred_t *credp, enum called_from called_from) { int row; ASSERT((MUTEX_HELD(&tems.ts_lock) && MUTEX_HELD(&tem->tvs_lock)) || called_from == CALLED_FROM_STANDALONE); if (tems.ts_display_mode == VIS_PIXEL) tem_safe_pix_clear_entire_screen(tem, credp, called_from); tem_safe_callback_cursor(tem, VIS_HIDE_CURSOR, credp, called_from); /* * Display data in tvs_screen_buf to the actual framebuffer in a * row by row way. * When dealing with one row, output data with the same foreground * and background color all together. */ for (row = 0; row < tems.ts_c_dimension.height; row++) { tem_safe_callback_display(tem, tem->tvs_screen_rows[row], tems.ts_c_dimension.width, row, 0, credp, called_from); } tem_safe_callback_cursor(tem, VIS_DISPLAY_CURSOR, credp, called_from); }