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-rw-r--r--fs/binfmt_flat.c354
1 files changed, 143 insertions, 211 deletions
diff --git a/fs/binfmt_flat.c b/fs/binfmt_flat.c
index 82a48e830018..b5b5ca1a44f7 100644
--- a/fs/binfmt_flat.c
+++ b/fs/binfmt_flat.c
@@ -39,9 +39,14 @@
#include <linux/vmalloc.h>
#include <asm/byteorder.h>
-#include <asm/unaligned.h>
+#include <linux/unaligned.h>
#include <asm/cacheflush.h>
#include <asm/page.h>
+#include <asm/flat.h>
+
+#ifndef flat_get_relocate_addr
+#define flat_get_relocate_addr(rel) (rel)
+#endif
/****************************************************************************/
@@ -63,6 +68,16 @@
#define RELOC_FAILED 0xff00ff01 /* Relocation incorrect somewhere */
#define UNLOADED_LIB 0x7ff000ff /* Placeholder for unused library */
+#define MAX_SHARED_LIBS (1)
+
+#ifdef CONFIG_BINFMT_FLAT_NO_DATA_START_OFFSET
+#define DATA_START_OFFSET_WORDS (0)
+#define MAX_SHARED_LIBS_UPDATE (0)
+#else
+#define DATA_START_OFFSET_WORDS (MAX_SHARED_LIBS)
+#define MAX_SHARED_LIBS_UPDATE (MAX_SHARED_LIBS)
+#endif
+
struct lib_info {
struct {
unsigned long start_code; /* Start of text segment */
@@ -75,32 +90,13 @@ struct lib_info {
} lib_list[MAX_SHARED_LIBS];
};
-#ifdef CONFIG_BINFMT_SHARED_FLAT
-static int load_flat_shared_library(int id, struct lib_info *p);
-#endif
-
static int load_flat_binary(struct linux_binprm *);
-static int flat_core_dump(struct coredump_params *cprm);
static struct linux_binfmt flat_format = {
.module = THIS_MODULE,
.load_binary = load_flat_binary,
- .core_dump = flat_core_dump,
- .min_coredump = PAGE_SIZE
};
-/****************************************************************************/
-/*
- * Routine writes a core dump image in the current directory.
- * Currently only a stub-function.
- */
-
-static int flat_core_dump(struct coredump_params *cprm)
-{
- pr_warn("Process %s:%d received signr %d and should have core dumped\n",
- current->comm, current->pid, cprm->siginfo->si_signo);
- return 1;
-}
/****************************************************************************/
/*
@@ -120,41 +116,47 @@ static int create_flat_tables(struct linux_binprm *bprm, unsigned long arg_start
sp -= bprm->envc + 1;
sp -= bprm->argc + 1;
- sp -= flat_argvp_envp_on_stack() ? 2 : 0;
+ if (IS_ENABLED(CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK))
+ sp -= 2; /* argvp + envp */
sp -= 1; /* &argc */
current->mm->start_stack = (unsigned long)sp & -FLAT_STACK_ALIGN;
sp = (unsigned long __user *)current->mm->start_stack;
- __put_user(bprm->argc, sp++);
- if (flat_argvp_envp_on_stack()) {
+ if (put_user(bprm->argc, sp++))
+ return -EFAULT;
+ if (IS_ENABLED(CONFIG_BINFMT_FLAT_ARGVP_ENVP_ON_STACK)) {
unsigned long argv, envp;
argv = (unsigned long)(sp + 2);
envp = (unsigned long)(sp + 2 + bprm->argc + 1);
- __put_user(argv, sp++);
- __put_user(envp, sp++);
+ if (put_user(argv, sp++) || put_user(envp, sp++))
+ return -EFAULT;
}
current->mm->arg_start = (unsigned long)p;
for (i = bprm->argc; i > 0; i--) {
- __put_user((unsigned long)p, sp++);
+ if (put_user((unsigned long)p, sp++))
+ return -EFAULT;
len = strnlen_user(p, MAX_ARG_STRLEN);
if (!len || len > MAX_ARG_STRLEN)
return -EINVAL;
p += len;
}
- __put_user(0, sp++);
+ if (put_user(0, sp++))
+ return -EFAULT;
current->mm->arg_end = (unsigned long)p;
current->mm->env_start = (unsigned long) p;
for (i = bprm->envc; i > 0; i--) {
- __put_user((unsigned long)p, sp++);
+ if (put_user((unsigned long)p, sp++))
+ return -EFAULT;
len = strnlen_user(p, MAX_ARG_STRLEN);
if (!len || len > MAX_ARG_STRLEN)
return -EINVAL;
p += len;
}
- __put_user(0, sp++);
+ if (put_user(0, sp++))
+ return -EFAULT;
current->mm->env_end = (unsigned long)p;
return 0;
@@ -299,53 +301,20 @@ out_free:
/****************************************************************************/
static unsigned long
-calc_reloc(unsigned long r, struct lib_info *p, int curid, int internalp)
+calc_reloc(unsigned long r, struct lib_info *p)
{
unsigned long addr;
- int id;
unsigned long start_brk;
unsigned long start_data;
unsigned long text_len;
unsigned long start_code;
-#ifdef CONFIG_BINFMT_SHARED_FLAT
- if (r == 0)
- id = curid; /* Relocs of 0 are always self referring */
- else {
- id = (r >> 24) & 0xff; /* Find ID for this reloc */
- r &= 0x00ffffff; /* Trim ID off here */
- }
- if (id >= MAX_SHARED_LIBS) {
- pr_err("reference 0x%lx to shared library %d", r, id);
- goto failed;
- }
- if (curid != id) {
- if (internalp) {
- pr_err("reloc address 0x%lx not in same module "
- "(%d != %d)", r, curid, id);
- goto failed;
- } else if (!p->lib_list[id].loaded &&
- load_flat_shared_library(id, p) < 0) {
- pr_err("failed to load library %d", id);
- goto failed;
- }
- /* Check versioning information (i.e. time stamps) */
- if (p->lib_list[id].build_date && p->lib_list[curid].build_date &&
- p->lib_list[curid].build_date < p->lib_list[id].build_date) {
- pr_err("library %d is younger than %d", id, curid);
- goto failed;
- }
- }
-#else
- id = 0;
-#endif
-
- start_brk = p->lib_list[id].start_brk;
- start_data = p->lib_list[id].start_data;
- start_code = p->lib_list[id].start_code;
- text_len = p->lib_list[id].text_len;
+ start_brk = p->lib_list[0].start_brk;
+ start_data = p->lib_list[0].start_data;
+ start_code = p->lib_list[0].start_code;
+ text_len = p->lib_list[0].text_len;
- if (!flat_reloc_valid(r, start_brk - start_data + text_len)) {
+ if (r > start_brk - start_data + text_len) {
pr_err("reloc outside program 0x%lx (0 - 0x%lx/0x%lx)",
r, start_brk-start_data+text_len, text_len);
goto failed;
@@ -368,6 +337,7 @@ failed:
/****************************************************************************/
+#ifdef CONFIG_BINFMT_FLAT_OLD
static void old_reloc(unsigned long rl)
{
static const char *segment[] = { "TEXT", "DATA", "BSS", "*UNKNOWN*" };
@@ -405,18 +375,43 @@ static void old_reloc(unsigned long rl)
pr_debug("Relocation became %lx\n", val);
}
+#endif /* CONFIG_BINFMT_FLAT_OLD */
/****************************************************************************/
+static inline u32 __user *skip_got_header(u32 __user *rp)
+{
+ if (IS_ENABLED(CONFIG_RISCV)) {
+ /*
+ * RISC-V has a 16 byte GOT PLT header for elf64-riscv
+ * and 8 byte GOT PLT header for elf32-riscv.
+ * Skip the whole GOT PLT header, since it is reserved
+ * for the dynamic linker (ld.so).
+ */
+ u32 rp_val0, rp_val1;
+
+ if (get_user(rp_val0, rp))
+ return rp;
+ if (get_user(rp_val1, rp + 1))
+ return rp;
+
+ if (rp_val0 == 0xffffffff && rp_val1 == 0xffffffff)
+ rp += 4;
+ else if (rp_val0 == 0xffffffff)
+ rp += 2;
+ }
+ return rp;
+}
+
static int load_flat_file(struct linux_binprm *bprm,
- struct lib_info *libinfo, int id, unsigned long *extra_stack)
+ struct lib_info *libinfo, unsigned long *extra_stack)
{
struct flat_hdr *hdr;
unsigned long textpos, datapos, realdatastart;
u32 text_len, data_len, bss_len, stack_len, full_data, flags;
unsigned long len, memp, memp_size, extra, rlim;
- u32 __user *reloc, *rp;
- struct inode *inode;
+ __be32 __user *reloc;
+ u32 __user *rp;
int i, rev, relocs;
loff_t fpos;
unsigned long start_code, end_code;
@@ -424,7 +419,6 @@ static int load_flat_file(struct linux_binprm *bprm,
int ret;
hdr = ((struct flat_hdr *) bprm->buf); /* exec-header */
- inode = file_inode(bprm->file);
text_len = ntohl(hdr->data_start);
data_len = ntohl(hdr->data_end) - ntohl(hdr->data_start);
@@ -454,6 +448,7 @@ static int load_flat_file(struct linux_binprm *bprm,
if (flags & FLAT_FLAG_KTRACE)
pr_info("Loading file: %s\n", bprm->filename);
+#ifdef CONFIG_BINFMT_FLAT_OLD
if (rev != FLAT_VERSION && rev != OLD_FLAT_VERSION) {
pr_err("bad flat file version 0x%x (supported 0x%lx and 0x%lx)\n",
rev, FLAT_VERSION, OLD_FLAT_VERSION);
@@ -461,32 +456,34 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
- /* Don't allow old format executables to use shared libraries */
- if (rev == OLD_FLAT_VERSION && id != 0) {
- pr_err("shared libraries are not available before rev 0x%lx\n",
- FLAT_VERSION);
+ /*
+ * fix up the flags for the older format, there were all kinds
+ * of endian hacks, this only works for the simple cases
+ */
+ if (rev == OLD_FLAT_VERSION &&
+ (flags || IS_ENABLED(CONFIG_BINFMT_FLAT_OLD_ALWAYS_RAM)))
+ flags = FLAT_FLAG_RAM;
+
+#else /* CONFIG_BINFMT_FLAT_OLD */
+ if (rev != FLAT_VERSION) {
+ pr_err("bad flat file version 0x%x (supported 0x%lx)\n",
+ rev, FLAT_VERSION);
ret = -ENOEXEC;
goto err;
}
+#endif /* !CONFIG_BINFMT_FLAT_OLD */
/*
* Make sure the header params are sane.
* 28 bits (256 MB) is way more than reasonable in this case.
* If some top bits are set we have probable binary corruption.
*/
- if ((text_len | data_len | bss_len | stack_len | full_data) >> 28) {
+ if ((text_len | data_len | bss_len | stack_len | relocs | full_data) >> 28) {
pr_err("bad header\n");
ret = -ENOEXEC;
goto err;
}
- /*
- * fix up the flags for the older format, there were all kinds
- * of endian hacks, this only works for the simple cases
- */
- if (rev == OLD_FLAT_VERSION && flat_old_ram_flag(flags))
- flags = FLAT_FLAG_RAM;
-
#ifndef CONFIG_BINFMT_ZFLAT
if (flags & (FLAT_FLAG_GZIP|FLAT_FLAG_GZDATA)) {
pr_err("Support for ZFLAT executables is not enabled.\n");
@@ -509,15 +506,13 @@ static int load_flat_file(struct linux_binprm *bprm,
}
/* Flush all traces of the currently running executable */
- if (id == 0) {
- ret = flush_old_exec(bprm);
- if (ret)
- goto err;
+ ret = begin_new_exec(bprm);
+ if (ret)
+ goto err;
- /* OK, This is the point of no return */
- set_personality(PER_LINUX_32BIT);
- setup_new_exec(bprm);
- }
+ /* OK, This is the point of no return */
+ set_personality(PER_LINUX_32BIT);
+ setup_new_exec(bprm);
/*
* calculate the extra space we need to map in
@@ -538,7 +533,7 @@ static int load_flat_file(struct linux_binprm *bprm,
pr_debug("ROM mapping of file (we hope)\n");
textpos = vm_mmap(bprm->file, 0, text_len, PROT_READ|PROT_EXEC,
- MAP_PRIVATE|MAP_EXECUTABLE, 0);
+ MAP_PRIVATE, 0);
if (!textpos || IS_ERR_VALUE(textpos)) {
ret = textpos;
if (!textpos)
@@ -547,7 +542,8 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
- len = data_len + extra + MAX_SHARED_LIBS * sizeof(unsigned long);
+ len = data_len + extra +
+ DATA_START_OFFSET_WORDS * sizeof(unsigned long);
len = PAGE_ALIGN(len);
realdatastart = vm_mmap(NULL, 0, len,
PROT_READ|PROT_WRITE|PROT_EXEC, MAP_PRIVATE, 0);
@@ -562,7 +558,7 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
datapos = ALIGN(realdatastart +
- MAX_SHARED_LIBS * sizeof(unsigned long),
+ DATA_START_OFFSET_WORDS * sizeof(unsigned long),
FLAT_DATA_ALIGN);
pr_debug("Allocated data+bss+stack (%u bytes): %lx\n",
@@ -587,13 +583,14 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
- reloc = (u32 __user *)
+ reloc = (__be32 __user *)
(datapos + (ntohl(hdr->reloc_start) - text_len));
memp = realdatastart;
memp_size = len;
} else {
- len = text_len + data_len + extra + MAX_SHARED_LIBS * sizeof(u32);
+ len = text_len + data_len + extra +
+ DATA_START_OFFSET_WORDS * sizeof(u32);
len = PAGE_ALIGN(len);
textpos = vm_mmap(NULL, 0, len,
PROT_READ | PROT_EXEC | PROT_WRITE, MAP_PRIVATE, 0);
@@ -609,10 +606,10 @@ static int load_flat_file(struct linux_binprm *bprm,
realdatastart = textpos + ntohl(hdr->data_start);
datapos = ALIGN(realdatastart +
- MAX_SHARED_LIBS * sizeof(u32),
+ DATA_START_OFFSET_WORDS * sizeof(u32),
FLAT_DATA_ALIGN);
- reloc = (u32 __user *)
+ reloc = (__be32 __user *)
(datapos + (ntohl(hdr->reloc_start) - text_len));
memp = textpos;
memp_size = len;
@@ -685,7 +682,7 @@ static int load_flat_file(struct linux_binprm *bprm,
ret = result;
pr_err("Unable to read code+data+bss, errno %d\n", ret);
vm_munmap(textpos, text_len + data_len + extra +
- MAX_SHARED_LIBS * sizeof(u32));
+ DATA_START_OFFSET_WORDS * sizeof(u32));
goto err;
}
}
@@ -695,42 +692,40 @@ static int load_flat_file(struct linux_binprm *bprm,
text_len -= sizeof(struct flat_hdr); /* the real code len */
/* The main program needs a little extra setup in the task structure */
- if (id == 0) {
- current->mm->start_code = start_code;
- current->mm->end_code = end_code;
- current->mm->start_data = datapos;
- current->mm->end_data = datapos + data_len;
- /*
- * set up the brk stuff, uses any slack left in data/bss/stack
- * allocation. We put the brk after the bss (between the bss
- * and stack) like other platforms.
- * Userspace code relies on the stack pointer starting out at
- * an address right at the end of a page.
- */
- current->mm->start_brk = datapos + data_len + bss_len;
- current->mm->brk = (current->mm->start_brk + 3) & ~3;
+ current->mm->start_code = start_code;
+ current->mm->end_code = end_code;
+ current->mm->start_data = datapos;
+ current->mm->end_data = datapos + data_len;
+ /*
+ * set up the brk stuff, uses any slack left in data/bss/stack
+ * allocation. We put the brk after the bss (between the bss
+ * and stack) like other platforms.
+ * Userspace code relies on the stack pointer starting out at
+ * an address right at the end of a page.
+ */
+ current->mm->start_brk = datapos + data_len + bss_len;
+ current->mm->brk = (current->mm->start_brk + 3) & ~3;
#ifndef CONFIG_MMU
- current->mm->context.end_brk = memp + memp_size - stack_len;
+ current->mm->context.end_brk = memp + memp_size - stack_len;
#endif
- }
if (flags & FLAT_FLAG_KTRACE) {
pr_info("Mapping is %lx, Entry point is %x, data_start is %x\n",
textpos, 0x00ffffff&ntohl(hdr->entry), ntohl(hdr->data_start));
pr_info("%s %s: TEXT=%lx-%lx DATA=%lx-%lx BSS=%lx-%lx\n",
- id ? "Lib" : "Load", bprm->filename,
+ "Load", bprm->filename,
start_code, end_code, datapos, datapos + data_len,
datapos + data_len, (datapos + data_len + bss_len + 3) & ~3);
}
/* Store the current module values into the global library structure */
- libinfo->lib_list[id].start_code = start_code;
- libinfo->lib_list[id].start_data = datapos;
- libinfo->lib_list[id].start_brk = datapos + data_len + bss_len;
- libinfo->lib_list[id].text_len = text_len;
- libinfo->lib_list[id].loaded = 1;
- libinfo->lib_list[id].entry = (0x00ffffff & ntohl(hdr->entry)) + textpos;
- libinfo->lib_list[id].build_date = ntohl(hdr->build_date);
+ libinfo->lib_list[0].start_code = start_code;
+ libinfo->lib_list[0].start_data = datapos;
+ libinfo->lib_list[0].start_brk = datapos + data_len + bss_len;
+ libinfo->lib_list[0].text_len = text_len;
+ libinfo->lib_list[0].loaded = 1;
+ libinfo->lib_list[0].entry = (0x00ffffff & ntohl(hdr->entry)) + textpos;
+ libinfo->lib_list[0].build_date = ntohl(hdr->build_date);
/*
* We just load the allocations into some temporary memory to
@@ -745,14 +740,15 @@ static int load_flat_file(struct linux_binprm *bprm,
* image.
*/
if (flags & FLAT_FLAG_GOTPIC) {
- for (rp = (u32 __user *)datapos; ; rp++) {
+ rp = skip_got_header((u32 __user *) datapos);
+ for (; ; rp++) {
u32 addr, rp_val;
if (get_user(rp_val, rp))
return -EFAULT;
if (rp_val == 0xffffffff)
break;
if (rp_val) {
- addr = calc_reloc(rp_val, libinfo, id, 0);
+ addr = calc_reloc(rp_val, libinfo);
if (addr == RELOC_FAILED) {
ret = -ENOEXEC;
goto err;
@@ -775,30 +771,27 @@ static int load_flat_file(struct linux_binprm *bprm,
* __start to address 4 so that is okay).
*/
if (rev > OLD_FLAT_VERSION) {
- u32 __maybe_unused persistent = 0;
for (i = 0; i < relocs; i++) {
u32 addr, relval;
+ __be32 tmp;
/*
* Get the address of the pointer to be
* relocated (of course, the address has to be
* relocated first).
*/
- if (get_user(relval, reloc + i))
+ if (get_user(tmp, reloc + i))
return -EFAULT;
- relval = ntohl(relval);
- if (flat_set_persistent(relval, &persistent))
- continue;
+ relval = ntohl(tmp);
addr = flat_get_relocate_addr(relval);
- rp = (u32 __user *)calc_reloc(addr, libinfo, id, 1);
+ rp = (u32 __user *)calc_reloc(addr, libinfo);
if (rp == (u32 __user *)RELOC_FAILED) {
ret = -ENOEXEC;
goto err;
}
/* Get the pointer's value. */
- ret = flat_get_addr_from_rp(rp, relval, flags,
- &addr, &persistent);
+ ret = flat_get_addr_from_rp(rp, relval, flags, &addr);
if (unlikely(ret))
goto err;
@@ -807,9 +800,14 @@ static int load_flat_file(struct linux_binprm *bprm,
* Do the relocation. PIC relocs in the data section are
* already in target order
*/
- if ((flags & FLAT_FLAG_GOTPIC) == 0)
- addr = ntohl(addr);
- addr = calc_reloc(addr, libinfo, id, 0);
+ if ((flags & FLAT_FLAG_GOTPIC) == 0) {
+ /*
+ * Meh, the same value can have a different
+ * byte order based on a flag..
+ */
+ addr = ntohl((__force __be32)addr);
+ }
+ addr = calc_reloc(addr, libinfo);
if (addr == RELOC_FAILED) {
ret = -ENOEXEC;
goto err;
@@ -821,22 +819,23 @@ static int load_flat_file(struct linux_binprm *bprm,
goto err;
}
}
+#ifdef CONFIG_BINFMT_FLAT_OLD
} else {
for (i = 0; i < relocs; i++) {
- u32 relval;
+ __be32 relval;
if (get_user(relval, reloc + i))
return -EFAULT;
- relval = ntohl(relval);
- old_reloc(relval);
+ old_reloc(ntohl(relval));
}
+#endif /* CONFIG_BINFMT_FLAT_OLD */
}
- flush_icache_range(start_code, end_code);
+ flush_icache_user_range(start_code, end_code);
/* zero the BSS, BRK and stack areas */
if (clear_user((void __user *)(datapos + data_len), bss_len +
(memp + memp_size - stack_len - /* end brk */
- libinfo->lib_list[id].start_brk) + /* start brk */
+ libinfo->lib_list[0].start_brk) + /* start brk */
stack_len))
return -EFAULT;
@@ -847,58 +846,6 @@ err:
/****************************************************************************/
-#ifdef CONFIG_BINFMT_SHARED_FLAT
-
-/*
- * Load a shared library into memory. The library gets its own data
- * segment (including bss) but not argv/argc/environ.
- */
-
-static int load_flat_shared_library(int id, struct lib_info *libs)
-{
- struct linux_binprm bprm;
- int res;
- char buf[16];
-
- memset(&bprm, 0, sizeof(bprm));
-
- /* Create the file name */
- sprintf(buf, "/lib/lib%d.so", id);
-
- /* Open the file up */
- bprm.filename = buf;
- bprm.file = open_exec(bprm.filename);
- res = PTR_ERR(bprm.file);
- if (IS_ERR(bprm.file))
- return res;
-
- bprm.cred = prepare_exec_creds();
- res = -ENOMEM;
- if (!bprm.cred)
- goto out;
-
- /* We don't really care about recalculating credentials at this point
- * as we're past the point of no return and are dealing with shared
- * libraries.
- */
- bprm.called_set_creds = 1;
-
- res = prepare_binprm(&bprm);
-
- if (!res)
- res = load_flat_file(&bprm, libs, id, NULL);
-
- abort_creds(bprm.cred);
-
-out:
- allow_write_access(bprm.file);
- fput(bprm.file);
-
- return res;
-}
-
-#endif /* CONFIG_BINFMT_SHARED_FLAT */
-/****************************************************************************/
/*
* These are the functions used to load flat style executables and shared
@@ -930,12 +877,12 @@ static int load_flat_binary(struct linux_binprm *bprm)
stack_len += (bprm->envc + 1) * sizeof(char *); /* the envp array */
stack_len = ALIGN(stack_len, FLAT_STACK_ALIGN);
- res = load_flat_file(bprm, &libinfo, 0, &stack_len);
+ res = load_flat_file(bprm, &libinfo, &stack_len);
if (res < 0)
return res;
/* Update data segment pointers for all libraries */
- for (i = 0; i < MAX_SHARED_LIBS; i++) {
+ for (i = 0; i < MAX_SHARED_LIBS_UPDATE; i++) {
if (!libinfo.lib_list[i].loaded)
continue;
for (j = 0; j < MAX_SHARED_LIBS; j++) {
@@ -949,8 +896,6 @@ static int load_flat_binary(struct linux_binprm *bprm)
}
}
- install_exec_creds(bprm);
-
set_binfmt(&flat_format);
#ifdef CONFIG_MMU
@@ -977,19 +922,6 @@ static int load_flat_binary(struct linux_binprm *bprm)
*/
start_addr = libinfo.lib_list[0].entry;
-#ifdef CONFIG_BINFMT_SHARED_FLAT
- for (i = MAX_SHARED_LIBS-1; i > 0; i--) {
- if (libinfo.lib_list[i].loaded) {
- /* Push previos first to call address */
- unsigned long __user *sp;
- current->mm->start_stack -= sizeof(unsigned long);
- sp = (unsigned long __user *)current->mm->start_stack;
- __put_user(start_addr, sp);
- start_addr = libinfo.lib_list[i].entry;
- }
- }
-#endif
-
#ifdef FLAT_PLAT_INIT
FLAT_PLAT_INIT(regs);
#endif