new directory sructure for fe310 fw

31 files changed, 0 insertions, 565 deletions

diff --git a/code/fe310/gloss/Makefile b/code/fe310/gloss/Makefile
deleted file mode 100644
index a937a53..0000000
--- a/code/fe310/gloss/Makefile
+++ /dev/null
@@ -1,17 +0,0 @@
-include ../common.mk
-CFLAGS += -I../include
-
-src = sys_access.c sys_chdir.c sys_chmod.c sys_chown.c sys_close.c sys_execve.c sys_exit.c sys_faccessat.c sys_fork.c sys_fstat.c sys_fstatat.c sys_ftime.c sys_getcwd.c sys_getpid.c \
-	sys_isatty.c sys_kill.c sys_link.c sys_lseek.c sys_lstat.c sys_open.c sys_openat.c sys_read.c sys_sbrk.c sys_stat.c sys_sysconf.c sys_unlink.c sys_utime.c sys_wait.c sys_write.c
-obj = crt0.o $(src:.c=.o)
-
-%.o: %.c
-	$(CC) $(CFLAGS) -c $<
-
-%.o: %.S
-	$(CC) $(CFLAGS) -c $<
-
-all: $(obj)
-
-clean:
-	rm -f *.o
diff --git a/code/fe310/gloss/crt0.S b/code/fe310/gloss/crt0.S
deleted file mode 100644
index 920ee4b..0000000
--- a/code/fe310/gloss/crt0.S
+++ /dev/null
@@ -1,246 +0,0 @@
-/* Copyright (c) 2017-2018  SiFive Inc. All rights reserved.
-
-   This copyrighted material is made available to anyone wishing to use,
-   modify, copy, or redistribute it subject to the terms and conditions
-   of the FreeBSD License.   This program is distributed in the hope that
-   it will be useful, but WITHOUT ANY WARRANTY expressed or implied,
-   including the implied warranties of MERCHANTABILITY or FITNESS FOR
-   A PARTICULAR PURPOSE.  A copy of this license is available at
-   http://www.opensource.org/licenses.
-*/
-
-/* crt0.S: Entry point for RISC-V METAL programs. */
-
-.section .text.libgloss.start
-.global _start
-.type   _start, @function
-
-  /* _start is defined by the METAL to have been called with the following
-   * arguments:
-   *   a0: the hart ID of the currently executing hart.  Harts can start at
-   *       any arbitrary point, it's the C library's job to ensure the code is
-   *       safe.
-   *   a1: a pointer to a description of the machine on which this code is
-   *       currently executing.  This is probably 0 on an embedded system
-   *       because they tend to not be dynamically portable.  As such, newlib
-   *       ignores this argument.
-   *   a2: a pointer to a function that must be run after the envirnoment has
-   *       been initialized, but before user code can be expected to be run.
-   *       If this is 0 then there is no function to be run. */
-_start:
-.cfi_startproc
-.cfi_undefined ra
-
-  /* This is a bit funky: it's not usually sane for _start to return, but in
-   * this case we actually want to in order to signal an error to the METAL. */
-  mv s0, ra
-
-  /* Before doing anything we must initialize the global pointer, as we cannot
-   * safely perform any access that may be relaxed without GP being set.  This
-   * is done with relaxation disabled to avoid relaxing the address calculation
-   * to just "addi gp, gp, 0". */
-.option push
-.option norelax
-  la gp, __global_pointer$
-.option pop
-
-  /* The METAL is designed for a bare-metal environment and therefor is expected
-   * to define its own stack pointer.  We also align the stack pointer here
-   * because the only RISC-V ABI that's currently defined mandates 16-byte
-   * stack alignment. */
-  la sp, _sp
-
-  /* Increment by hartid number of stack sizes */
-  li t0, 0
-  la t1, __stack_size
-1:
-  beq t0, a0, 1f
-  add sp, sp, t1
-  addi t0, t0, 1
-  j 1b
-1:
-  andi sp, sp, -16
-
-  /* If we're not hart 0, skip the initialization work */
-  la t0, __metal_boot_hart
-  bne a0, t0, _skip_init
-
-  /* Embedded systems frequently require relocating the data segment before C
-   * code can be run -- for example, the data segment may exist in flash upon
-   * boot and then need to get relocated into a non-persistant writable memory
-   * before C code can execute.  If this is the case we do so here.  This step
-   * is optional: if the METAL provides an environment in which this relocation
-   * is not necessary then it must simply set metal_segment_data_source_start to
-   * be equal to metal_segment_data_target_start. */
-  la t0, metal_segment_data_source_start
-  la t1, metal_segment_data_target_start
-  la t2, metal_segment_data_target_end
-
-  beq t0, t1, 2f
-  bge t1, t2, 2f
-
-1:
-#if __riscv_xlen == 32
-  lw   a0, 0(t0)
-  addi t0, t0, 4
-  sw   a0, 0(t1)
-  addi t1, t1, 4
-  blt  t1, t2, 1b
-#else
-  ld   a0, 0(t0)
-  addi t0, t0, 8
-  sd   a0, 0(t1)
-  addi t1, t1, 8
-  blt  t1, t2, 1b
-#endif
-2:
-
-  /* Copy the ITIM section */
-  la t0, metal_segment_itim_source_start
-  la t1, metal_segment_itim_target_start
-  la t2, metal_segment_itim_target_end
-
-  beq t0, t1, 2f
-  bge t1, t2, 2f
-
-1:
-#if __riscv_xlen == 32
-  lw   a0, 0(t0)
-  addi t0, t0, 4
-  sw   a0, 0(t1)
-  addi t1, t1, 4
-  blt  t1, t2, 1b
-#else
-  ld   a0, 0(t0)
-  addi t0, t0, 8
-  sd   a0, 0(t1)
-  addi t1, t1, 8
-  blt  t1, t2, 1b
-#endif
-2:
-
-  /* Fence all subsequent instruction fetches until after the ITIM writes
-     complete */
-  fence.i
-
-  /* Zero the BSS segment. */
-  la t1, metal_segment_bss_target_start
-  la t2, metal_segment_bss_target_end
-
-  bge t1, t2, 2f
-
-1:
-#if __riscv_xlen == 32
-  sw   x0, 0(t1)
-  addi t1, t1, 4
-  blt  t1, t2, 1b
-#else
-  sd   x0, 0(t1)
-  addi t1, t1, 8
-  blt  t1, t2, 1b
-#endif
-2:
-
-  /* At this point we're in an environment that can execute C code.  The first
-   * thing to do is to make the callback to the parent environment if it's been
-   * requested to do so. */
-  beqz a2, 1f
-  jalr a2
-1:
-
-  /* The RISC-V port only uses new-style constructors and destructors. */
-  la a0, __libc_fini_array
-  call atexit
-  call __libc_init_array
-
-_skip_init:
-
-  /* Synchronize harts so that secondary harts wait until hart 0 finishes
-     initializing */
-  call __metal_synchronize_harts
-
-  /* Check RISC-V isa and enable FS bits if Floating Point architecture. */
-  csrr a5, misa
-  li   a4, 0x10028
-  and  a5, a5, a4
-  beqz a5, 1f
-  csrr a5, mstatus
-  lui  a4, 0x2
-  or   a5, a5, a4
-  csrw mstatus, a5
-  csrwi fcsr, 0
-1:
-
-  /* This is a C runtime, so main() is defined to have some arguments.  Since
-   * there's nothing sane the METAL can pass we don't bother with that but
-   * instead just setup as close to a NOP as we can. */
-  li a0, 1     /* argc=1 */
-  la a1, argv  /* argv = {"libgloss", NULL} */
-  la a2, envp  /* envp = {NULL} */
-  call secondary_main
-
-  /* Call exit to handle libc's cleanup routines.  Under normal contains this
-   * shouldn't even get called, but I'm still not using a tail call here
-   * because returning to the METAL is the right thing to do in pathological
-   * situations. */
-  call exit
-
-  /* And here's where we return.  Again, it's a bit odd but the METAL defines
-   * this as a bad idea (ie, as opposed to leaving it undefined) and at this
-   * point it's really the only thing left to do. */
-  mv ra, s0
-  ret
-
-.cfi_endproc
-
-/* RISC-V systems always use __libc_{init,fini}_array, but for compatibility we
- * define _{init,fini} to do nothing. */
-.global _init
-.type   _init, @function
-.global _fini
-.type   _fini, @function
-_init:
-_fini:
-  ret
-.size _init, .-_init
-.size _fini, .-_fini
-
-/* By default, secondary_main will cause secondary harts to spin forever.
- * Users can redefine secondary_main themselves to run code on secondary harts */
-.weak   secondary_main
-.global secondary_main
-.type   secondary_main, @function
-
-secondary_main:
-  addi sp, sp, -16
-#if __riscv_xlen == 32
-  sw ra, 4(sp)
-#else
-  sd ra, 8(sp)
-#endif
-  csrr t0, mhartid
-  la t1, __metal_boot_hart
-  beq t0, t1, 2f
-1:
-  wfi
-  j 1b
-2:
-  call main
-#if __riscv_xlen == 32
-  lw ra, 4(sp)
-#else
-  ld ra, 8(sp)
-#endif
-  addi sp, sp, 16
-  ret
-
-/* This shim allows main() to be passed a set of arguments that can satisfy the
- * requirements of the C API. */
-.section .rodata.libgloss.start
-argv:
-.dc.a name
-envp:
-.dc.a 0
-name:
-.asciz "libgloss"
-
diff --git a/code/fe310/gloss/sys_access.c b/code/fe310/gloss/sys_access.c
deleted file mode 100644
index c0bc153..0000000
--- a/code/fe310/gloss/sys_access.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_access(const char *file, int mode)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_chdir.c b/code/fe310/gloss/sys_chdir.c
deleted file mode 100644
index f33d26a..0000000
--- a/code/fe310/gloss/sys_chdir.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_chdir(const char *path)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_chmod.c b/code/fe310/gloss/sys_chmod.c
deleted file mode 100644
index 67412bf..0000000
--- a/code/fe310/gloss/sys_chmod.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-#include <sys/types.h>
-
-int
-_chmod(const char *path, mode_t mode)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_chown.c b/code/fe310/gloss/sys_chown.c
deleted file mode 100644
index 302952e..0000000
--- a/code/fe310/gloss/sys_chown.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <sys/types.h>
-#include <errno.h>
-
-int
-_chown(const char *path, uid_t owner, gid_t group)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_close.c b/code/fe310/gloss/sys_close.c
deleted file mode 100644
index 26dd6a5..0000000
--- a/code/fe310/gloss/sys_close.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_close(int file)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_execve.c b/code/fe310/gloss/sys_execve.c
deleted file mode 100644
index 9ae9f7e..0000000
--- a/code/fe310/gloss/sys_execve.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_execve(const char *name, char *const argv[], char *const env[])
-{
-  errno = ENOMEM;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_exit.c b/code/fe310/gloss/sys_exit.c
deleted file mode 100644
index 1502b3e..0000000
--- a/code/fe310/gloss/sys_exit.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <stdlib.h>
-
-__attribute__ ((noreturn)) void
-_exit(int st) { while (1); }
-
-int
-atexit(void (*f)(void)) { return 0; }
diff --git a/code/fe310/gloss/sys_faccessat.c b/code/fe310/gloss/sys_faccessat.c
deleted file mode 100644
index 873d52c..0000000
--- a/code/fe310/gloss/sys_faccessat.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_faccessat(int dirfd, const char *file, int mode, int flags)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_fork.c b/code/fe310/gloss/sys_fork.c
deleted file mode 100644
index 64e6756..0000000
--- a/code/fe310/gloss/sys_fork.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_fork()
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_fstat.c b/code/fe310/gloss/sys_fstat.c
deleted file mode 100644
index fedc289..0000000
--- a/code/fe310/gloss/sys_fstat.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-#include <sys/stat.h>
-
-int
-_fstat(int file, struct stat *st)
-{
-  errno = -ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_fstatat.c b/code/fe310/gloss/sys_fstatat.c
deleted file mode 100644
index f2f43bd..0000000
--- a/code/fe310/gloss/sys_fstatat.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-#include <sys/stat.h>
-
-int
-_fstatat(int dirfd, const char *file, struct stat *st, int flags)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_ftime.c b/code/fe310/gloss/sys_ftime.c
deleted file mode 100644
index 65c1563..0000000
--- a/code/fe310/gloss/sys_ftime.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-#include <sys/timeb.h>
-
-int
-_ftime(struct timeb *tp)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_getcwd.c b/code/fe310/gloss/sys_getcwd.c
deleted file mode 100644
index 82e8404..0000000
--- a/code/fe310/gloss/sys_getcwd.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-char *
-_getcwd(char *buf, size_t size)
-{
-  errno = -ENOSYS;
-  return NULL;
-}
diff --git a/code/fe310/gloss/sys_getpid.c b/code/fe310/gloss/sys_getpid.c
deleted file mode 100644
index 589ad11..0000000
--- a/code/fe310/gloss/sys_getpid.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <errno.h>
-
-int
-_getpid()
-{
-  return 1;
-}
diff --git a/code/fe310/gloss/sys_isatty.c b/code/fe310/gloss/sys_isatty.c
deleted file mode 100644
index 70aec43..0000000
--- a/code/fe310/gloss/sys_isatty.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <unistd.h>
-
-int
-_isatty(int fd)
-{
-  return ((fd == STDIN_FILENO) || (fd == STDOUT_FILENO) || (fd == STDERR_FILENO));
-}
diff --git a/code/fe310/gloss/sys_kill.c b/code/fe310/gloss/sys_kill.c
deleted file mode 100644
index 9003f26..0000000
--- a/code/fe310/gloss/sys_kill.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_kill(int pid, int sig)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_link.c b/code/fe310/gloss/sys_link.c
deleted file mode 100644
index 40d5912..0000000
--- a/code/fe310/gloss/sys_link.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <errno.h>
-
-int _link(const char *old_name, const char *new_name)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_lseek.c b/code/fe310/gloss/sys_lseek.c
deleted file mode 100644
index d28a781..0000000
--- a/code/fe310/gloss/sys_lseek.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <sys/types.h>
-#include <errno.h>
-
-off_t
-_lseek(int file, off_t ptr, int dir)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_lstat.c b/code/fe310/gloss/sys_lstat.c
deleted file mode 100644
index 97a4585..0000000
--- a/code/fe310/gloss/sys_lstat.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-#include <sys/stat.h>
-
-int _lstat(const char *file, struct stat *st)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_open.c b/code/fe310/gloss/sys_open.c
deleted file mode 100644
index a59f627..0000000
--- a/code/fe310/gloss/sys_open.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_open(const char *name, int flags, int mode)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_openat.c b/code/fe310/gloss/sys_openat.c
deleted file mode 100644
index 206de3b..0000000
--- a/code/fe310/gloss/sys_openat.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_openat(int dirfd, const char *name, int flags, int mode)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_read.c b/code/fe310/gloss/sys_read.c
deleted file mode 100644
index 1857fc6..0000000
--- a/code/fe310/gloss/sys_read.c
+++ /dev/null
@@ -1,23 +0,0 @@
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include "platform.h"
-
-/* Read from a file.  */
-ssize_t
-_read(int fd, void *ptr, size_t len)
-{
-  if (fd != STDIN_FILENO) {
-    errno = ENOSYS;
-    return -1;
-  }
-
-  char *current = ptr;
-  for (size_t i = 0; i < len; i++) {
-    volatile uint32_t r;
-    while ((r = UART0_REG(UART_REG_RXFIFO)) & 0x80000000);
-    current[i] = r & 0xFF;
-  }
-  return len;
-}
diff --git a/code/fe310/gloss/sys_sbrk.c b/code/fe310/gloss/sys_sbrk.c
deleted file mode 100644
index ce10c90..0000000
--- a/code/fe310/gloss/sys_sbrk.c
+++ /dev/null
@@ -1,38 +0,0 @@
-#include <sys/types.h>
-
-/* brk is handled entirely within the C library.  This limits METAL programs that
- * use the C library to be disallowed from dynamically allocating memory
- * without talking to the C library, but that sounds like a sane way to go
- * about it.  Note that there is no error checking anywhere in this file, users
- * will simply get the relevant error when actually trying to use the memory
- * that's been allocated. */
-extern char metal_segment_heap_target_start;
-extern char metal_segment_heap_target_end;
-static char *brk = &metal_segment_heap_target_start;
-
-int
-_brk(void *addr)
-{
-  brk = addr;
-  return 0;
-}
-
-char *
-_sbrk(ptrdiff_t incr)
-{
-  char *old = brk;
-
-  /* If __heap_size == 0, we can't allocate memory on the heap */
-  if(&metal_segment_heap_target_start == &metal_segment_heap_target_end) {
-    return (void *)-1;
-  }
-
-  /* Don't move the break past the end of the heap */
-  if ((brk + incr) <= &metal_segment_heap_target_end) {
-    brk += incr;
-  } else {
-    return (void *)-1;
-  }
-
-  return old;
-}
diff --git a/code/fe310/gloss/sys_stat.c b/code/fe310/gloss/sys_stat.c
deleted file mode 100644
index 3c2e419..0000000
--- a/code/fe310/gloss/sys_stat.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-#include <sys/stat.h>
-
-int
-_stat(const char *file, struct stat *st)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_sysconf.c b/code/fe310/gloss/sys_sysconf.c
deleted file mode 100644
index 452a252..0000000
--- a/code/fe310/gloss/sys_sysconf.c
+++ /dev/null
@@ -1,16 +0,0 @@
-#include <unistd.h>
-#include <time.h>
-
-/* Get configurable system variables.  */
-
-long
-_sysconf(int name)
-{
-  switch (name)
-    {
-    case _SC_CLK_TCK:
-      return CLOCKS_PER_SEC;
-    }
-
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_unlink.c b/code/fe310/gloss/sys_unlink.c
deleted file mode 100644
index b369d20..0000000
--- a/code/fe310/gloss/sys_unlink.c
+++ /dev/null
@@ -1,8 +0,0 @@
-#include <errno.h>
-
-int
-_unlink(const char *name)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_utime.c b/code/fe310/gloss/sys_utime.c
deleted file mode 100644
index 33d557a..0000000
--- a/code/fe310/gloss/sys_utime.c
+++ /dev/null
@@ -1,9 +0,0 @@
-#include <errno.h>
-struct utimbuf;
-
-int
-_utime(const char *path, const struct utimbuf *times)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_wait.c b/code/fe310/gloss/sys_wait.c
deleted file mode 100644
index 9d459f1..0000000
--- a/code/fe310/gloss/sys_wait.c
+++ /dev/null
@@ -1,7 +0,0 @@
-#include <errno.h>
-
-int _wait(int *status)
-{
-  errno = ENOSYS;
-  return -1;
-}
diff --git a/code/fe310/gloss/sys_write.c b/code/fe310/gloss/sys_write.c
deleted file mode 100644
index 2095940..0000000
--- a/code/fe310/gloss/sys_write.c
+++ /dev/null
@@ -1,22 +0,0 @@
-#include <sys/types.h>
-#include <errno.h>
-#include <unistd.h>
-
-#include "platform.h"
-
-/* Write to a file.  */
-ssize_t
-_write(int fd, const void *ptr, size_t len)
-{
-  if ((fd != STDOUT_FILENO) && (fd != STDERR_FILENO)) {
-    errno = ENOSYS;
-    return -1;
-  }
-
-  const char *current = ptr;
-  for (size_t i = 0; i < len; i++) {
-    while (UART0_REG(UART_REG_TXFIFO) & 0x80000000);
-    UART0_REG(UART_REG_TXFIFO) = current[i];
-  }
-  return len;
-}