xf.li | bfc6e71 | 2025-02-07 01:54:34 -0800 | [diff] [blame] | 1 | |
| 2 | #include "zconf.h" |
| 3 | |
| 4 | extern char input_data[]; |
| 5 | extern char input_data_end[]; |
| 6 | |
| 7 | unsigned char *output_data = NULL; |
| 8 | |
| 9 | unsigned long free_mem_ptr = 0; |
| 10 | unsigned long free_mem_end_ptr = 0; |
| 11 | |
| 12 | void error(char *x) |
| 13 | { |
| 14 | while(1); |
| 15 | } |
| 16 | |
| 17 | extern int do_decompress(u8 *input, int len, u8 *output, void (*error)(char *x)); |
| 18 | |
| 19 | void decompress_kernel(unsigned long output_start, unsigned long free_mem_ptr_p, unsigned long free_mem_ptr_end_p) |
| 20 | { |
| 21 | output_data = (unsigned char *)output_start; |
| 22 | free_mem_ptr = free_mem_ptr_p; |
| 23 | free_mem_end_ptr = free_mem_ptr_end_p; |
| 24 | |
| 25 | do_decompress((u8 *)input_data, input_data_end - input_data + 1, output_data, error); |
| 26 | } |
| 27 | |
| 28 | typedef unsigned long CYG_WORD; |
| 29 | |
| 30 | #define CYG_STR_UNALIGNED(X, Y) \ |
| 31 | (((CYG_WORD)(X) & (sizeof (CYG_WORD) - 1)) | \ |
| 32 | ((CYG_WORD)(Y) & (sizeof (CYG_WORD) - 1))) |
| 33 | |
| 34 | #define CYG_STR_OPT_BIGBLOCKSIZE (sizeof(CYG_WORD) << 2) |
| 35 | |
| 36 | #define CYG_STR_OPT_LITTLEBLOCKSIZE (sizeof (CYG_WORD)) |
| 37 | |
| 38 | void *memcpy( void *s1, const void *s2, size_t n ) |
| 39 | { |
| 40 | char *dst = (char *) s1; |
| 41 | const char *src = (const char *) s2; |
| 42 | CYG_WORD *aligned_dst; |
| 43 | const CYG_WORD *aligned_src; |
| 44 | |
| 45 | if (dst == src) |
| 46 | return s1; |
| 47 | |
| 48 | if (n < sizeof(CYG_WORD) || CYG_STR_UNALIGNED (src, dst)) |
| 49 | { |
| 50 | while (n--) |
| 51 | *dst++ = *src++; |
| 52 | return s1; |
| 53 | } |
| 54 | |
| 55 | aligned_dst = (CYG_WORD *)dst; |
| 56 | aligned_src = (const CYG_WORD *)src; |
| 57 | |
| 58 | while (n >= CYG_STR_OPT_BIGBLOCKSIZE) |
| 59 | { |
| 60 | *aligned_dst++ = *aligned_src++; |
| 61 | *aligned_dst++ = *aligned_src++; |
| 62 | *aligned_dst++ = *aligned_src++; |
| 63 | *aligned_dst++ = *aligned_src++; |
| 64 | n -= CYG_STR_OPT_BIGBLOCKSIZE; |
| 65 | } |
| 66 | |
| 67 | while (n >= CYG_STR_OPT_LITTLEBLOCKSIZE) |
| 68 | { |
| 69 | *aligned_dst++ = *aligned_src++; |
| 70 | n -= CYG_STR_OPT_LITTLEBLOCKSIZE; |
| 71 | } |
| 72 | |
| 73 | dst = (char*)aligned_dst; |
| 74 | src = (const char*)aligned_src; |
| 75 | while (n--) |
| 76 | *dst++ = *src++; |
| 77 | |
| 78 | return s1; |
| 79 | } |