Date: Sat, 17 Feb 2018 00:12:30 +0000 (UTC) From: Benno Rice <benno@FreeBSD.org> To: src-committers@freebsd.org, svn-src-all@freebsd.org, svn-src-head@freebsd.org Subject: svn commit: r329418 - head/stand/i386/boot2 Message-ID: <201802170012.w1H0CUJC025360@repo.freebsd.org>
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Author: benno Date: Sat Feb 17 00:12:30 2018 New Revision: 329418 URL: https://svnweb.freebsd.org/changeset/base/329418 Log: Revert r329269. I tried to rework a section to fit inside 80 columns but the change ended up being functional. Back this out so I can readdress. Modified: head/stand/i386/boot2/boot2.c Modified: head/stand/i386/boot2/boot2.c ============================================================================== --- head/stand/i386/boot2/boot2.c Fri Feb 16 23:59:50 2018 (r329417) +++ head/stand/i386/boot2/boot2.c Sat Feb 17 00:12:30 2018 (r329418) @@ -72,33 +72,33 @@ extern uint32_t _end; static const char optstr[NOPT] = "DhaCcdgmnpqrsv"; /* Also 'P', 'S' */ static const unsigned char flags[NOPT] = { - RBX_DUAL, - RBX_SERIAL, - RBX_ASKNAME, - RBX_CDROM, - RBX_CONFIG, - RBX_KDB, - RBX_GDB, - RBX_MUTE, - RBX_NOINTR, - RBX_PAUSE, - RBX_QUIET, - RBX_DFLTROOT, - RBX_SINGLE, - RBX_VERBOSE + RBX_DUAL, + RBX_SERIAL, + RBX_ASKNAME, + RBX_CDROM, + RBX_CONFIG, + RBX_KDB, + RBX_GDB, + RBX_MUTE, + RBX_NOINTR, + RBX_PAUSE, + RBX_QUIET, + RBX_DFLTROOT, + RBX_SINGLE, + RBX_VERBOSE }; static const char *const dev_nm[NDEV] = {"ad", "da", "fd"}; static const unsigned char dev_maj[NDEV] = {30, 4, 2}; static struct dsk { - unsigned drive; - unsigned type; - unsigned unit; - uint8_t slice; - uint8_t part; - unsigned start; - int init; + unsigned drive; + unsigned type; + unsigned unit; + uint8_t slice; + uint8_t part; + unsigned start; + int init; } dsk; static char cmd[512], cmddup[512], knamebuf[1024]; static const char *kname; @@ -126,21 +126,18 @@ static void memcpy(void *, const void *, int); static void memcpy(void *dst, const void *src, int len) { - const char *s; - char *d; + const char *s = src; + char *d = dst; - s = src; - d = dst; - while (len--) - *d++ = *s++; + while (len--) + *d++ = *s++; } static inline int strcmp(const char *s1, const char *s2) { - - for (; *s1 == *s2 && *s1; s1++, s2++); - return ((unsigned char)*s1 - (unsigned char)*s2); + for (; *s1 == *s2 && *s1; s1++, s2++); + return (unsigned char)*s1 - (unsigned char)*s2; } #define UFS_SMALL_CGBASE @@ -149,519 +146,501 @@ strcmp(const char *s1, const char *s2) static int xfsread(ufs_ino_t inode, void *buf, size_t nbyte) { - - if ((size_t)fsread(inode, buf, nbyte) != nbyte) { - printf("Invalid %s\n", "format"); - return (-1); - } - return (0); + if ((size_t)fsread(inode, buf, nbyte) != nbyte) { + printf("Invalid %s\n", "format"); + return -1; + } + return 0; } static inline void getstr(void) { - char *s; - int c; + char *s; + int c; - s = cmd; - for (;;) { - switch (c = xgetc(0)) { - case 0: - break; - case '\177': - case '\b': - if (s > cmd) { - s--; - printf("\b \b"); - } - break; - case '\n': - case '\r': - *s = 0; - return; - default: - if (s - cmd < sizeof(cmd) - 1) - *s++ = c; - putchar(c); - } + s = cmd; + for (;;) { + switch (c = xgetc(0)) { + case 0: + break; + case '\177': + case '\b': + if (s > cmd) { + s--; + printf("\b \b"); + } + break; + case '\n': + case '\r': + *s = 0; + return; + default: + if (s - cmd < sizeof(cmd) - 1) + *s++ = c; + putchar(c); } + } } static inline void putc(int c) { - - v86.addr = 0x10; - v86.eax = 0xe00 | (c & 0xff); - v86.ebx = 0x7; - v86int(); + v86.addr = 0x10; + v86.eax = 0xe00 | (c & 0xff); + v86.ebx = 0x7; + v86int(); } int main(void) { - uint8_t autoboot; - ufs_ino_t ino; - size_t nbyte; + uint8_t autoboot; + ufs_ino_t ino; + size_t nbyte; - dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); - v86.ctl = V86_FLAGS; - v86.efl = PSL_RESERVED_DEFAULT | PSL_I; - dsk.drive = *(uint8_t *)PTOV(ARGS); - dsk.type = dsk.drive & DRV_HARD ? TYPE_AD : TYPE_FD; - dsk.unit = dsk.drive & DRV_MASK; - dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1; - bootinfo.bi_version = BOOTINFO_VERSION; - bootinfo.bi_size = sizeof(bootinfo); + dmadat = (void *)(roundup2(__base + (int32_t)&_end, 0x10000) - __base); + v86.ctl = V86_FLAGS; + v86.efl = PSL_RESERVED_DEFAULT | PSL_I; + dsk.drive = *(uint8_t *)PTOV(ARGS); + dsk.type = dsk.drive & DRV_HARD ? TYPE_AD : TYPE_FD; + dsk.unit = dsk.drive & DRV_MASK; + dsk.slice = *(uint8_t *)PTOV(ARGS + 1) + 1; + bootinfo.bi_version = BOOTINFO_VERSION; + bootinfo.bi_size = sizeof(bootinfo); - /* Process configuration file */ + /* Process configuration file */ - autoboot = 1; + autoboot = 1; - if ((ino = lookup(PATH_CONFIG)) || - (ino = lookup(PATH_DOTCONFIG))) { - nbyte = fsread(ino, cmd, sizeof(cmd) - 1); - cmd[nbyte] = '\0'; - } + if ((ino = lookup(PATH_CONFIG)) || + (ino = lookup(PATH_DOTCONFIG))) { + nbyte = fsread(ino, cmd, sizeof(cmd) - 1); + cmd[nbyte] = '\0'; + } - if (*cmd) { - memcpy(cmddup, cmd, sizeof(cmd)); - if (parse()) - autoboot = 0; - if (!OPT_CHECK(RBX_QUIET)) - printf("%s: %s", PATH_CONFIG, cmddup); - /* Do not process this command twice */ - *cmd = 0; - } + if (*cmd) { + memcpy(cmddup, cmd, sizeof(cmd)); + if (parse()) + autoboot = 0; + if (!OPT_CHECK(RBX_QUIET)) + printf("%s: %s", PATH_CONFIG, cmddup); + /* Do not process this command twice */ + *cmd = 0; + } - /* - * Try to exec stage 3 boot loader. If interrupted by a keypress, - * or in case of failure, try to load a kernel directly instead. - */ + /* + * Try to exec stage 3 boot loader. If interrupted by a keypress, + * or in case of failure, try to load a kernel directly instead. + */ - if (!kname) { - kname = PATH_LOADER; - if (autoboot && !keyhit(3*SECOND)) { - load(); - kname = PATH_KERNEL; - } + if (!kname) { + kname = PATH_LOADER; + if (autoboot && !keyhit(3*SECOND)) { + load(); + kname = PATH_KERNEL; } + } - /* Present the user with the boot2 prompt. */ + /* Present the user with the boot2 prompt. */ - for (;;) { - if (!autoboot || !OPT_CHECK(RBX_QUIET)) - printf("\nFreeBSD/x86 boot\n" - "Default: %u:%s(%u,%c)%s\n" - "boot: ", - dsk.drive & DRV_MASK, dev_nm[dsk.type], dsk.unit, - 'a' + dsk.part, kname); - if (DO_SIO) - sio_flush(); - if (!autoboot || keyhit(3*SECOND)) - getstr(); - else if (!autoboot || !OPT_CHECK(RBX_QUIET)) - putchar('\n'); - autoboot = 0; - if (parse()) - putchar('\a'); - else - load(); - } + for (;;) { + if (!autoboot || !OPT_CHECK(RBX_QUIET)) + printf("\nFreeBSD/x86 boot\n" + "Default: %u:%s(%u,%c)%s\n" + "boot: ", + dsk.drive & DRV_MASK, dev_nm[dsk.type], dsk.unit, + 'a' + dsk.part, kname); + if (DO_SIO) + sio_flush(); + if (!autoboot || keyhit(3*SECOND)) + getstr(); + else if (!autoboot || !OPT_CHECK(RBX_QUIET)) + putchar('\n'); + autoboot = 0; + if (parse()) + putchar('\a'); + else + load(); + } } /* XXX - Needed for btxld to link the boot2 binary; do not remove. */ void exit(int x) { - } static void load(void) { - union { - struct exec ex; - Elf32_Ehdr eh; - } hdr; - static Elf32_Phdr ep[2]; - static Elf32_Shdr es[2]; - caddr_t p; - ufs_ino_t ino; - uint32_t addr; - int k; - uint8_t i, j; + union { + struct exec ex; + Elf32_Ehdr eh; + } hdr; + static Elf32_Phdr ep[2]; + static Elf32_Shdr es[2]; + caddr_t p; + ufs_ino_t ino; + uint32_t addr; + int k; + uint8_t i, j; - if (!(ino = lookup(kname))) { - if (!ls) - printf("No %s\n", kname); + if (!(ino = lookup(kname))) { + if (!ls) + printf("No %s\n", kname); + return; + } + if (xfsread(ino, &hdr, sizeof(hdr))) + return; + + if (N_GETMAGIC(hdr.ex) == ZMAGIC) { + addr = hdr.ex.a_entry & 0xffffff; + p = PTOV(addr); + fs_off = PAGE_SIZE; + if (xfsread(ino, p, hdr.ex.a_text)) + return; + p += roundup2(hdr.ex.a_text, PAGE_SIZE); + if (xfsread(ino, p, hdr.ex.a_data)) + return; + } else if (IS_ELF(hdr.eh)) { + fs_off = hdr.eh.e_phoff; + for (j = k = 0; k < hdr.eh.e_phnum && j < 2; k++) { + if (xfsread(ino, ep + j, sizeof(ep[0]))) return; + if (ep[j].p_type == PT_LOAD) + j++; } - if (xfsread(ino, &hdr, sizeof(hdr))) + for (i = 0; i < 2; i++) { + p = PTOV(ep[i].p_paddr & 0xffffff); + fs_off = ep[i].p_offset; + if (xfsread(ino, p, ep[i].p_filesz)) return; - - if (N_GETMAGIC(hdr.ex) == ZMAGIC) { - addr = hdr.ex.a_entry & 0xffffff; - p = PTOV(addr); - fs_off = PAGE_SIZE; - if (xfsread(ino, p, hdr.ex.a_text)) - return; - p += roundup2(hdr.ex.a_text, PAGE_SIZE); - if (xfsread(ino, p, hdr.ex.a_data)) - return; - } else if (IS_ELF(hdr.eh)) { - fs_off = hdr.eh.e_phoff; - for (j = k = 0; k < hdr.eh.e_phnum && j < 2; k++) { - if (xfsread(ino, ep + j, sizeof(ep[0]))) - return; - if (ep[j].p_type == PT_LOAD) - j++; - } - for (i = 0; i < 2; i++) { - p = PTOV(ep[i].p_paddr & 0xffffff); - fs_off = ep[i].p_offset; - if (xfsread(ino, p, ep[i].p_filesz)) - return; - } - p += roundup2(ep[1].p_memsz, PAGE_SIZE); - bootinfo.bi_symtab = VTOP(p); - if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { - fs_off = hdr.eh.e_shoff + sizeof(es[0]) * - (hdr.eh.e_shstrndx + 1); - if (xfsread(ino, &es, sizeof(es))) - return; - for (i = 0; i < 2; i++) { - *(Elf32_Word *)p = es[i].sh_size; - p += sizeof(es[i].sh_size); - fs_off = es[i].sh_offset; - if (xfsread(ino, p, es[i].sh_size)) - return; - p += es[i].sh_size; - } - } - addr = hdr.eh.e_entry & 0xffffff; - bootinfo.bi_esymtab = VTOP(p); - } else { - printf("Invalid %s\n", "format"); + } + p += roundup2(ep[1].p_memsz, PAGE_SIZE); + bootinfo.bi_symtab = VTOP(p); + if (hdr.eh.e_shnum == hdr.eh.e_shstrndx + 3) { + fs_off = hdr.eh.e_shoff + sizeof(es[0]) * + (hdr.eh.e_shstrndx + 1); + if (xfsread(ino, &es, sizeof(es))) return; + for (i = 0; i < 2; i++) { + *(Elf32_Word *)p = es[i].sh_size; + p += sizeof(es[i].sh_size); + fs_off = es[i].sh_offset; + if (xfsread(ino, p, es[i].sh_size)) + return; + p += es[i].sh_size; + } } + addr = hdr.eh.e_entry & 0xffffff; + bootinfo.bi_esymtab = VTOP(p); + } else { + printf("Invalid %s\n", "format"); + return; + } - bootinfo.bi_kernelname = VTOP(kname); - bootinfo.bi_bios_dev = dsk.drive; - __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), - MAKEBOOTDEV(dev_maj[dsk.type], dsk.slice, dsk.unit, dsk.part), - 0, 0, 0, VTOP(&bootinfo)); + bootinfo.bi_kernelname = VTOP(kname); + bootinfo.bi_bios_dev = dsk.drive; + __exec((caddr_t)addr, RB_BOOTINFO | (opts & RBX_MASK), + MAKEBOOTDEV(dev_maj[dsk.type], dsk.slice, dsk.unit, dsk.part), + 0, 0, 0, VTOP(&bootinfo)); } static int parse() { - char *arg; - char *ep, *p, *q; - const char *cp; - unsigned int drv; - int c, i, j; - size_t k; + char *arg = cmd; + char *ep, *p, *q; + const char *cp; + unsigned int drv; + int c, i, j; + size_t k; - arg = cmd; - - while ((c = *arg++)) { - if (c == ' ' || c == '\t' || c == '\n') - continue; - for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); - ep = p; - if (*p) - *p++ = 0; - if (c == '-') { - while ((c = *arg++)) { - if (c == 'P') { - if (*(uint8_t *)PTOV(0x496) & 0x10) { - cp = "yes"; - } else { - opts |= OPT_SET(RBX_DUAL) | - OPT_SET(RBX_SERIAL); - cp = "no"; - } - printf("Keyboard: %s\n", cp); - continue; + while ((c = *arg++)) { + if (c == ' ' || c == '\t' || c == '\n') + continue; + for (p = arg; *p && *p != '\n' && *p != ' ' && *p != '\t'; p++); + ep = p; + if (*p) + *p++ = 0; + if (c == '-') { + while ((c = *arg++)) { + if (c == 'P') { + if (*(uint8_t *)PTOV(0x496) & 0x10) { + cp = "yes"; + } else { + opts |= OPT_SET(RBX_DUAL) | OPT_SET(RBX_SERIAL); + cp = "no"; + } + printf("Keyboard: %s\n", cp); + continue; #if SERIAL - } else if (c == 'S') { - j = 0; - while (*arg <= '9') { - i = (unsigned int)(*arg - '0'); - j = j * 10 + i; - arg++; - } - if (j > 0 && i == -'0') { - comspeed = j; - break; - } - /* - * Fall through to error below - * ('S' not in optstr[]). - */ + } else if (c == 'S') { + j = 0; + while ((unsigned int)(i = *arg++ - '0') <= 9) + j = j * 10 + i; + if (j > 0 && i == -'0') { + comspeed = j; + break; + } + /* Fall through to error below ('S' not in optstr[]). */ #endif - } - for (i = 0; c != optstr[i]; i++) - if (i == NOPT - 1) - return (-1); - opts ^= OPT_SET(flags[i]); - } + } + for (i = 0; c != optstr[i]; i++) + if (i == NOPT - 1) + return -1; + opts ^= OPT_SET(flags[i]); + } #if SERIAL - ioctrl = OPT_CHECK(RBX_DUAL) ? - (IO_SERIAL|IO_KEYBOARD) : - OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; - if (DO_SIO) { - if (sio_init(115200 / comspeed) != 0) - ioctrl &= ~IO_SERIAL; - } + ioctrl = OPT_CHECK(RBX_DUAL) ? (IO_SERIAL|IO_KEYBOARD) : + OPT_CHECK(RBX_SERIAL) ? IO_SERIAL : IO_KEYBOARD; + if (DO_SIO) { + if (sio_init(115200 / comspeed) != 0) + ioctrl &= ~IO_SERIAL; + } #endif - } else { - for (q = arg--; *q && *q != '('; q++); - if (*q) { - drv = -1; - if (arg[1] == ':') { - drv = *arg - '0'; - if (drv > 9) - return (-1); - arg += 2; - } - if (q - arg != 2) - return -1; - for (i = 0; arg[0] != dev_nm[i][0] || - arg[1] != dev_nm[i][1]; i++) - if (i == NDEV - 1) - return (-1); - dsk.type = i; - arg += 3; - dsk.unit = *arg - '0'; - if (arg[1] != ',' || dsk.unit > 9) - return (-1); - arg += 2; - dsk.slice = WHOLE_DISK_SLICE; - if (arg[1] == ',') { - dsk.slice = *arg - '0' + 1; - if (dsk.slice > NDOSPART + 1) - return (-1); - arg += 2; - } - if (arg[1] != ')') - return (-1); - dsk.part = *arg - 'a'; - if (dsk.part > 7) - return (-1); - arg += 2; - if (drv == -1) - drv = dsk.unit; - dsk.drive = (dsk.type <= TYPE_MAXHARD - ? DRV_HARD : 0) + drv; - dsk_meta = 0; - } - k = ep - arg; - if (k > 0) { - if (k >= sizeof(knamebuf)) - return (-1); - memcpy(knamebuf, arg, k + 1); - kname = knamebuf; - } + } else { + for (q = arg--; *q && *q != '('; q++); + if (*q) { + drv = -1; + if (arg[1] == ':') { + drv = *arg - '0'; + if (drv > 9) + return (-1); + arg += 2; } - arg = p; + if (q - arg != 2) + return -1; + for (i = 0; arg[0] != dev_nm[i][0] || + arg[1] != dev_nm[i][1]; i++) + if (i == NDEV - 1) + return -1; + dsk.type = i; + arg += 3; + dsk.unit = *arg - '0'; + if (arg[1] != ',' || dsk.unit > 9) + return -1; + arg += 2; + dsk.slice = WHOLE_DISK_SLICE; + if (arg[1] == ',') { + dsk.slice = *arg - '0' + 1; + if (dsk.slice > NDOSPART + 1) + return -1; + arg += 2; + } + if (arg[1] != ')') + return -1; + dsk.part = *arg - 'a'; + if (dsk.part > 7) + return (-1); + arg += 2; + if (drv == -1) + drv = dsk.unit; + dsk.drive = (dsk.type <= TYPE_MAXHARD + ? DRV_HARD : 0) + drv; + dsk_meta = 0; + } + k = ep - arg; + if (k > 0) { + if (k >= sizeof(knamebuf)) + return -1; + memcpy(knamebuf, arg, k + 1); + kname = knamebuf; + } } - return (0); + arg = p; + } + return 0; } static int dskread(void *buf, unsigned lba, unsigned nblk) { - struct dos_partition *dp; - struct disklabel *d; - char *sec; - unsigned i; - uint8_t sl; - const char *reason; + struct dos_partition *dp; + struct disklabel *d; + char *sec; + unsigned i; + uint8_t sl; + const char *reason; - if (!dsk_meta) { - sec = dmadat->secbuf; - dsk.start = 0; - if (drvread(sec, DOSBBSECTOR, 1)) - return (-1); - dp = (void *)(sec + DOSPARTOFF); - sl = dsk.slice; - if (sl < BASE_SLICE) { - for (i = 0; i < NDOSPART; i++) - if (dp[i].dp_typ == DOSPTYP_386BSD && - (dp[i].dp_flag & 0x80 || sl < BASE_SLICE)) { - sl = BASE_SLICE + i; - if (dp[i].dp_flag & 0x80 || - dsk.slice == COMPATIBILITY_SLICE) - break; - } - if (dsk.slice == WHOLE_DISK_SLICE) - dsk.slice = sl; + if (!dsk_meta) { + sec = dmadat->secbuf; + dsk.start = 0; + if (drvread(sec, DOSBBSECTOR, 1)) + return -1; + dp = (void *)(sec + DOSPARTOFF); + sl = dsk.slice; + if (sl < BASE_SLICE) { + for (i = 0; i < NDOSPART; i++) + if (dp[i].dp_typ == DOSPTYP_386BSD && + (dp[i].dp_flag & 0x80 || sl < BASE_SLICE)) { + sl = BASE_SLICE + i; + if (dp[i].dp_flag & 0x80 || + dsk.slice == COMPATIBILITY_SLICE) + break; } - if (sl != WHOLE_DISK_SLICE) { - if (sl != COMPATIBILITY_SLICE) - dp += sl - BASE_SLICE; - if (dp->dp_typ != DOSPTYP_386BSD) { - reason = "slice"; - goto error; - } - dsk.start = dp->dp_start; - } - if (drvread(sec, dsk.start + LABELSECTOR, 1)) - return (-1); - d = (void *)(sec + LABELOFFSET); - if (d->d_magic != DISKMAGIC || d->d_magic2 != DISKMAGIC) { - if (dsk.part != RAW_PART) { - reason = "label"; - goto error; - } - } else { - if (!dsk.init) { - if (d->d_type == DTYPE_SCSI) - dsk.type = TYPE_DA; - dsk.init++; - } - if (dsk.part >= d->d_npartitions || - !d->d_partitions[dsk.part].p_size) { - reason = "partition"; - goto error; - } - dsk.start += d->d_partitions[dsk.part].p_offset; - dsk.start -= d->d_partitions[RAW_PART].p_offset; - } + if (dsk.slice == WHOLE_DISK_SLICE) + dsk.slice = sl; } - return (drvread(buf, dsk.start + lba, nblk)); + if (sl != WHOLE_DISK_SLICE) { + if (sl != COMPATIBILITY_SLICE) + dp += sl - BASE_SLICE; + if (dp->dp_typ != DOSPTYP_386BSD) { + reason = "slice"; + goto error; + } + dsk.start = dp->dp_start; + } + if (drvread(sec, dsk.start + LABELSECTOR, 1)) + return -1; + d = (void *)(sec + LABELOFFSET); + if (d->d_magic != DISKMAGIC || d->d_magic2 != DISKMAGIC) { + if (dsk.part != RAW_PART) { + reason = "label"; + goto error; + } + } else { + if (!dsk.init) { + if (d->d_type == DTYPE_SCSI) + dsk.type = TYPE_DA; + dsk.init++; + } + if (dsk.part >= d->d_npartitions || + !d->d_partitions[dsk.part].p_size) { + reason = "partition"; + goto error; + } + dsk.start += d->d_partitions[dsk.part].p_offset; + dsk.start -= d->d_partitions[RAW_PART].p_offset; + } + } + return drvread(buf, dsk.start + lba, nblk); error: - printf("Invalid %s\n", reason); - return (-1); + printf("Invalid %s\n", reason); + return -1; } static void printf(const char *fmt,...) { - va_list ap; - static char buf[10]; - char *s; - unsigned u; - int c; + va_list ap; + static char buf[10]; + char *s; + unsigned u; + int c; - va_start(ap, fmt); - while ((c = *fmt++)) { - if (c == '%') { - c = *fmt++; - switch (c) { - case 'c': - putchar(va_arg(ap, int)); - continue; - case 's': - for (s = va_arg(ap, char *); *s; s++) - putchar(*s); - continue; - case 'u': - u = va_arg(ap, unsigned); - s = buf; - do - *s++ = '0' + u % 10U; - while (u /= 10U); - while (--s >= buf) - putchar(*s); - continue; - } - } - putchar(c); + va_start(ap, fmt); + while ((c = *fmt++)) { + if (c == '%') { + c = *fmt++; + switch (c) { + case 'c': + putchar(va_arg(ap, int)); + continue; + case 's': + for (s = va_arg(ap, char *); *s; s++) + putchar(*s); + continue; + case 'u': + u = va_arg(ap, unsigned); + s = buf; + do + *s++ = '0' + u % 10U; + while (u /= 10U); + while (--s >= buf) + putchar(*s); + continue; + } } - va_end(ap); - return; + putchar(c); + } + va_end(ap); + return; } static void putchar(int c) { - - if (c == '\n') - xputc('\r'); - xputc(c); + if (c == '\n') + xputc('\r'); + xputc(c); } static int drvread(void *buf, unsigned lba, unsigned nblk) { - static unsigned c = 0x2d5c7c2f; + static unsigned c = 0x2d5c7c2f; - if (!OPT_CHECK(RBX_QUIET)) { - xputc(c = c << 8 | c >> 24); - xputc('\b'); - } - v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; - v86.addr = XREADORG; /* call to xread in boot1 */ - v86.es = VTOPSEG(buf); - v86.eax = lba; - v86.ebx = VTOPOFF(buf); - v86.ecx = lba >> 16; - v86.edx = nblk << 8 | dsk.drive; - v86int(); - v86.ctl = V86_FLAGS; - if (V86_CY(v86.efl)) { - printf("error %u lba %u\n", v86.eax >> 8 & 0xff, lba); - return (-1); - } - return (0); + if (!OPT_CHECK(RBX_QUIET)) { + xputc(c = c << 8 | c >> 24); + xputc('\b'); + } + v86.ctl = V86_ADDR | V86_CALLF | V86_FLAGS; + v86.addr = XREADORG; /* call to xread in boot1 */ + v86.es = VTOPSEG(buf); + v86.eax = lba; + v86.ebx = VTOPOFF(buf); + v86.ecx = lba >> 16; + v86.edx = nblk << 8 | dsk.drive; + v86int(); + v86.ctl = V86_FLAGS; + if (V86_CY(v86.efl)) { + printf("error %u lba %u\n", v86.eax >> 8 & 0xff, lba); + return -1; + } + return 0; } static int keyhit(unsigned ticks) { - uint32_t t0, t1; + uint32_t t0, t1; - if (OPT_CHECK(RBX_NOINTR)) - return (0); - t0 = 0; - for (;;) { - if (xgetc(1)) - return (1); - t1 = *(uint32_t *)PTOV(0x46c); - if (!t0) - t0 = t1; - if ((uint32_t)(t1 - t0) >= ticks) - return (0); - } + if (OPT_CHECK(RBX_NOINTR)) + return 0; + t0 = 0; + for (;;) { + if (xgetc(1)) + return 1; + t1 = *(uint32_t *)PTOV(0x46c); + if (!t0) + t0 = t1; + if ((uint32_t)(t1 - t0) >= ticks) + return 0; + } } static int xputc(int c) { - - if (DO_KBD) - putc(c); - if (DO_SIO) - sio_putc(c); - return (c); + if (DO_KBD) + putc(c); + if (DO_SIO) + sio_putc(c); + return c; } static int getc(int fn) { - - v86.addr = 0x16; - v86.eax = fn << 8; - v86int(); - return (fn == 0 ? v86.eax & 0xff : !V86_ZR(v86.efl)); + v86.addr = 0x16; + v86.eax = fn << 8; + v86int(); + return fn == 0 ? v86.eax & 0xff : !V86_ZR(v86.efl); } static int xgetc(int fn) { - - if (OPT_CHECK(RBX_NOINTR)) - return (0); - - for (;;) { - if (DO_KBD && getc(1)) - return (fn ? 1 : getc(0)); - if (DO_SIO && sio_ischar()) - return (fn ? 1 : sio_getc()); - if (fn) - return (0); - } + if (OPT_CHECK(RBX_NOINTR)) + return 0; + for (;;) { + if (DO_KBD && getc(1)) + return fn ? 1 : getc(0); + if (DO_SIO && sio_ischar()) + return fn ? 1 : sio_getc(); + if (fn) + return 0; + } }
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