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| Rev 4201 | Rev 4296 | ||
|---|---|---|---|
| Line 39... | Line 39... | ||
| 39 | #include <string.h> |
39 | #include <string.h> |
| 40 | #include <macros.h> |
40 | #include <macros.h> |
| 41 | 41 | ||
| 42 | /** Extract command name from the multiboot module command line. |
42 | /** Extract command name from the multiboot module command line. |
| 43 | * |
43 | * |
| 44 | * @param buf Destination buffer (will always null-terminate). |
44 | * @param buf Destination buffer (will always NULL-terminate). |
| 45 | * @param n Size of destination buffer. |
45 | * @param sz Size of destination buffer (in bytes). |
| 46 | * @param cmd_line Input string (the command line). |
46 | * @param cmd_line Input string (the command line). |
| 47 | * |
47 | * |
| 48 | */ |
48 | */ |
| 49 | static void extract_command(char *buf, size_t n, const char *cmd_line) |
49 | static void extract_command(char *buf, size_t sz, const char *cmd_line) |
| 50 | { |
50 | { |
| 51 | const char *start, *end, *cp; |
- | |
| 52 | size_t max_len; |
- | |
| 53 | - | ||
| 54 | /* Find the first space. */ |
51 | /* Find the first space. */ |
| 55 | end = strchr(cmd_line, ' '); |
52 | const char *end = str_chr(cmd_line, ' '); |
| 56 | if (end == NULL) |
53 | if (end == NULL) |
| 57 | end = cmd_line + strlen(cmd_line); |
54 | end = cmd_line + str_size(cmd_line); |
| 58 | 55 | ||
| 59 | /* |
56 | /* |
| 60 | * Find last occurence of '/' before 'end'. If found, place start at |
57 | * Find last occurence of '/' before 'end'. If found, place start at |
| 61 | * next character. Otherwise, place start at beginning of buffer. |
58 | * next character. Otherwise, place start at beginning of buffer. |
| 62 | */ |
59 | */ |
| 63 | cp = end; |
60 | const char *cp = end; |
| 64 | start = buf; |
61 | const char *start = buf; |
| - | 62 | ||
| 65 | while (cp != start) { |
63 | while (cp != start) { |
| 66 | if (*cp == '/') { |
64 | if (*cp == '/') { |
| 67 | start = cp + 1; |
65 | start = cp + 1; |
| 68 | break; |
66 | break; |
| 69 | } |
67 | } |
| 70 | --cp; |
68 | cp--; |
| 71 | } |
69 | } |
| 72 | 70 | ||
| 73 | /* Copy the command and null-terminate the string. */ |
71 | /* Copy the command. */ |
| 74 | max_len = min(n - 1, (size_t) (end - start)); |
72 | str_ncpy(buf, sz, start, (size_t) (end - start)); |
| 75 | strncpy(buf, start, max_len + 1); |
- | |
| 76 | buf[max_len] = '\0'; |
- | |
| 77 | } |
73 | } |
| 78 | 74 | ||
| 79 | /** Parse multiboot information structure. |
75 | /** Parse multiboot information structure. |
| 80 | * |
76 | * |
| 81 | * If @a signature does not contain a valid multiboot signature, |
77 | * If @a signature does not contain a valid multiboot signature, |
| Line 85... | Line 81... | ||
| 85 | * @param mi Pointer to the multiboot information structure. |
81 | * @param mi Pointer to the multiboot information structure. |
| 86 | */ |
82 | */ |
| 87 | void multiboot_info_parse(uint32_t signature, const multiboot_info_t *mi) |
83 | void multiboot_info_parse(uint32_t signature, const multiboot_info_t *mi) |
| 88 | { |
84 | { |
| 89 | uint32_t flags; |
85 | uint32_t flags; |
| 90 | multiboot_mod_t *mods; |
- | |
| 91 | uint32_t i; |
- | |
| 92 | 86 | ||
| 93 | if (signature == MULTIBOOT_LOADER_MAGIC) |
87 | if (signature == MULTIBOOT_LOADER_MAGIC) |
| 94 | flags = mi->flags; |
88 | flags = mi->flags; |
| 95 | else { |
89 | else { |
| 96 | /* No multiboot info available. */ |
90 | /* No multiboot info available. */ |
| 97 | flags = 0; |
91 | flags = 0; |
| 98 | } |
92 | } |
| 99 | 93 | ||
| 100 | /* Copy module information. */ |
94 | /* Copy module information. */ |
| 101 | 95 | uint32_t i; |
|
| 102 | if ((flags & MBINFO_FLAGS_MODS) != 0) { |
96 | if ((flags & MBINFO_FLAGS_MODS) != 0) { |
| 103 | init.cnt = min(mi->mods_count, CONFIG_INIT_TASKS); |
97 | init.cnt = min(mi->mods_count, CONFIG_INIT_TASKS); |
| - | 98 | multiboot_mod_t *mods |
|
| 104 | mods = (multiboot_mod_t *) MULTIBOOT_PTR(mi->mods_addr); |
99 | = (multiboot_mod_t *) MULTIBOOT_PTR(mi->mods_addr); |
| 105 | 100 | ||
| 106 | for (i = 0; i < init.cnt; i++) { |
101 | for (i = 0; i < init.cnt; i++) { |
| 107 | init.tasks[i].addr = PA2KA(mods[i].start); |
102 | init.tasks[i].addr = PA2KA(mods[i].start); |
| 108 | init.tasks[i].size = mods[i].end - mods[i].start; |
103 | init.tasks[i].size = mods[i].end - mods[i].start; |
| 109 | 104 | ||
| Line 111... | Line 106... | ||
| 111 | if (mods[i].string) { |
106 | if (mods[i].string) { |
| 112 | extract_command(init.tasks[i].name, |
107 | extract_command(init.tasks[i].name, |
| 113 | CONFIG_TASK_NAME_BUFLEN, |
108 | CONFIG_TASK_NAME_BUFLEN, |
| 114 | MULTIBOOT_PTR(mods[i].string)); |
109 | MULTIBOOT_PTR(mods[i].string)); |
| 115 | } else |
110 | } else |
| 116 | init.tasks[i].name[0] = '\0'; |
111 | init.tasks[i].name[0] = 0; |
| 117 | } |
112 | } |
| 118 | } else |
113 | } else |
| 119 | init.cnt = 0; |
114 | init.cnt = 0; |
| 120 | 115 | ||
| 121 | /* Copy memory map. */ |
116 | /* Copy memory map. */ |
| 122 | 117 | ||
| 123 | int32_t mmap_length; |
- | |
| 124 | multiboot_mmap_t *mme; |
- | |
| 125 | uint32_t size; |
- | |
| 126 | - | ||
| 127 | if ((flags & MBINFO_FLAGS_MMAP) != 0) { |
118 | if ((flags & MBINFO_FLAGS_MMAP) != 0) { |
| 128 | mmap_length = mi->mmap_length; |
119 | int32_t mmap_length = mi->mmap_length; |
| 129 | mme = MULTIBOOT_PTR(mi->mmap_addr); |
120 | multiboot_mmap_t *mme = MULTIBOOT_PTR(mi->mmap_addr); |
| 130 | e820counter = 0; |
121 | e820counter = 0; |
| 131 | 122 | ||
| 132 | i = 0; |
123 | i = 0; |
| 133 | while ((mmap_length > 0) && (i < MEMMAP_E820_MAX_RECORDS)) { |
124 | while ((mmap_length > 0) && (i < MEMMAP_E820_MAX_RECORDS)) { |
| 134 | e820table[i++] = mme->mm_info; |
125 | e820table[i++] = mme->mm_info; |
| 135 | 126 | ||
| 136 | /* Compute address of next structure. */ |
127 | /* Compute address of next structure. */ |
| 137 | size = sizeof(mme->size) + mme->size; |
128 | uint32_t size = sizeof(mme->size) + mme->size; |
| 138 | mme = ((void *) mme) + size; |
129 | mme = ((void *) mme) + size; |
| 139 | mmap_length -= size; |
130 | mmap_length -= size; |
| 140 | } |
131 | } |
| 141 | 132 | ||
| 142 | e820counter = i; |
133 | e820counter = i; |