iv/linux
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity

Xtensa updates for v5.13:

Browse Source 
- switch to generic syscall generation scripts
 - new GDBIO implementation for xtensa semihosting interface
 - various small code fixes and cleanups
 - a few typo fixes in comments and Kconfig help text
 -----BEGIN PGP SIGNATURE-----
 
 iQJHBAABCgAxFiEEK2eFS5jlMn3N6xfYUfnMkfg/oEQFAmCLCQsTHGpjbXZia2Jj
 QGdtYWlsLmNvbQAKCRBR+cyR+D+gRFWrD/4ijI7NzdK+u3VmRIwpsq7quG8cYtc8
 +x+XLWABAeOx6KagShfIGnjZs0Pvqew2n8De8a/SU1SwstthfDdG4VrPIrCnSXHH
 vGEaeIkOqkIsEGxYCVzNi2PGxWPlKej0miAXQqxSm+YX2cTcnJt8HEEPPJ39c0vb
 cy6g1TBeZrf2znqgoQkp2G2bxdh5yMv6Lwmgp4abFZhP87GOps9WJTpJ95DFLwHJ
 pAO9Cil9+W6mDA31VN34p0ypVePYf+qu5DVCEzo70MEdOwozjh8hHthubqy+UE/5
 ywQ90iqHNA1299tYvW8mzsQupPFuofgRhPqFZH50CM9EUTEdjvYi2LAwFEyiYB6R
 RZekdboSGVBjiTw5nl98EBaFFkmebKNk/QJkG6BYfjYefD9RzYR5J5BdUwc+UH7n
 tzAWTm49wLKviPbHaTywK63f7gS4X3BIpjy9YqjhezWyg1TPIvgnGBIHYJ8Q56em
 8E1dDziuohZNzL6PG0KgrEzUY8DJee1yU41hW6hz/BqWw/xRMHN+F1jFCGqG0Kvn
 rlTfGmVRBMovcuPkbOxi2TGyB4Bq4kIIlbXlKbpxLzjfh2KFtZLKn6J5YYGguMeo
 m4F7RdU2Jv1lcAifrZW+IZtvThce5zcv9xhEpFoSWlXY8H+lcNIm933jIXkIjTOi
 thtjKtwklJdslw==
 =3fyY
 -----END PGP SIGNATURE-----

Merge tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa

Pull Xtensa updates from Max Filippov:

 - switch to generic syscall generation scripts

 - new GDBIO implementation for xtensa semihosting interface

 - various small code fixes and cleanups

 - a few typo fixes in comments and Kconfig help text

* tag 'xtensa-20210429' of git://github.com/jcmvbkbc/linux-xtensa:
  xtensa: ISS: add GDBIO implementation to semihosting interface
  xtensa: ISS: split simcall implementation from semihosting interface
  xtensa: simcall.h: Change compitible to compatible
  xtensa: Couple of typo fixes
  xtensa: drop extraneous register load from initialize_mmu
  xtensa: fix pgprot_noncached assumptions
  xtensa: simplify coherent_kvaddr logic
  xtensa: syscalls: switch to generic syscallhdr.sh
  xtensa: syscalls: switch to generic syscalltbl.sh
  xtensa: stop filling syscall array with sys_ni_syscall
  xtensa: remove unneeded export in boot-elf/Makefile
  xtensa: move CONFIG_CPU_*_ENDIAN defines to Kconfig
  xtensa: fix warning comparing pointer to 0
  xtensa: fix spelling mistake in Kconfig "wont" -> "won't"
This commit is contained in:
Linus Torvalds 2021-04-30 12:09:28 -07:00
commit 437d1a5b66
18 changed files with 198 additions and 220 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

30
arch/xtensa/Kconfig
View File

@ -84,6 +84,12 @@ config KASAN_SHADOW_OFFSET
hex
default 0x6e400000
config CPU_BIG_ENDIAN
def_bool $(success,test "$(shell,echo __XTENSA_EB__ | $(CC) -E -P -)" = 1)
config CPU_LITTLE_ENDIAN
def_bool !CPU_BIG_ENDIAN
menu "Processor type and features"
choice
@ -387,6 +393,28 @@ config PARSE_BOOTPARAM
If unsure, say Y.
choice
prompt "Semihosting interface"
default XTENSA_SIMCALL_ISS
depends on XTENSA_PLATFORM_ISS
help
Choose semihosting interface that will be used for serial port,
block device and networking.
config XTENSA_SIMCALL_ISS
bool "simcall"
help
Use simcall instruction. simcall is only available on simulators,
it does nothing on hardware.
config XTENSA_SIMCALL_GDBIO
bool "GDBIO"
help
Use break instruction. It is available on real hardware when GDB
is attached to it via JTAG.
endchoice
config BLK_DEV_SIMDISK
tristate "Host file-based simulated block device support"
default n
@ -466,7 +494,7 @@ config INITIALIZE_XTENSA_MMU_INSIDE_VMLINUX
then enter your normal kernel breakpoints once the MMU was mapped
to the kernel mappings (0XC0000000).
This unfortunately won't work for U-Boot and likely also wont
This unfortunately won't work for U-Boot and likely also won't
work for using KEXEC to have a hot kernel ready for doing a
KDUMP.

9
arch/xtensa/Makefile
View File

@ -52,14 +52,7 @@ ifneq ($(CONFIG_LD_NO_RELAX),)
KBUILD_LDFLAGS := --no-relax
endif
ifeq ($(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EB__
KBUILD_CPPFLAGS += -DCONFIG_CPU_BIG_ENDIAN
endif
ifeq ($(shell echo __XTENSA_EL__ | $(CC) -E - | grep -v "\#"),1)
CHECKFLAGS += -D__XTENSA_EL__
KBUILD_CPPFLAGS += -DCONFIG_CPU_LITTLE_ENDIAN
endif
CHECKFLAGS += -D$(if $(CONFIG_CPU_BIG_ENDIAN),__XTENSA_EB__,__XTENSA_EL__)
vardirs := $(patsubst %,arch/xtensa/variants/%/,$(variant-y))
plfdirs := $(patsubst %,arch/xtensa/platforms/%/,$(platform-y))

4
arch/xtensa/boot/Makefile
View File

@ -12,10 +12,6 @@
KBUILD_CFLAGS += -fno-builtin -Iarch/$(ARCH)/boot/include
HOSTFLAGS += -Iarch/$(ARCH)/boot/include
BIG_ENDIAN := $(shell echo __XTENSA_EB__ | $(CC) -E - | grep -v "\#")
export BIG_ENDIAN
subdir-y := lib
targets += vmlinux.bin vmlinux.bin.gz
targets += uImage xipImage

11
arch/xtensa/boot/boot-elf/Makefile
View File

@ -4,15 +4,10 @@
# for more details.
#
ifeq ($(BIG_ENDIAN),1)
OBJCOPY_ARGS := -O elf32-xtensa-be
else
OBJCOPY_ARGS := -O elf32-xtensa-le
endif
OBJCOPY_ARGS := -O $(if $(CONFIG_CPU_BIG_ENDIAN),elf32-xtensa-be,elf32-xtensa-le)
export OBJCOPY_ARGS
export CPPFLAGS_boot.lds += -P -C
export KBUILD_AFLAGS += -mtext-section-literals
CPPFLAGS_boot.lds += -P -C
KBUILD_AFLAGS += -mtext-section-literals
boot-y := bootstrap.o
targets += $(boot-y) boot.lds

6
arch/xtensa/boot/boot-redboot/Makefile
View File

@ -4,11 +4,7 @@
# for more details.
#
ifeq ($(BIG_ENDIAN),1)
OBJCOPY_ARGS := -O elf32-xtensa-be
else
OBJCOPY_ARGS := -O elf32-xtensa-le
endif
OBJCOPY_ARGS := -O $(if $(CONFIG_CPU_BIG_ENDIAN),elf32-xtensa-be,elf32-xtensa-le)
LD_ARGS = -T $(srctree)/$(obj)/boot.ld

2
arch/xtensa/include/asm/initialize_mmu.h
View File

@ -73,7 +73,7 @@
_j 2f
.align 4
1: movi a2, 0x10000000
1:
#if CONFIG_KERNEL_LOAD_ADDRESS < 0x40000000ul
#define TEMP_MAPPING_VADDR 0x40000000

4
arch/xtensa/include/asm/pgtable.h
View File

@ -280,7 +280,9 @@ static inline pte_t pte_mkyoung(pte_t pte)
static inline pte_t pte_mkwrite(pte_t pte)
{ pte_val(pte) |= _PAGE_WRITABLE; return pte; }
#define pgprot_noncached(prot) (__pgprot(pgprot_val(prot) & ~_PAGE_CA_MASK))
#define pgprot_noncached(prot) \
((__pgprot((pgprot_val(prot) & ~_PAGE_CA_MASK) | \
_PAGE_CA_BYPASS)))
/*
* Conversion functions: convert a page and protection to a page entry,

4
arch/xtensa/kernel/head.S
View File

@ -212,7 +212,7 @@ ENTRY(_startup)
*
* The linker script used to build the Linux kernel image
* creates a table located at __boot_reloc_table_start
* that contans the information what data needs to be unpacked.
* that contains the information what data needs to be unpacked.
*
* Uses a2-a7.
*/
@ -222,7 +222,7 @@ ENTRY(_startup)
1: beq a2, a3, 3f # no more entries?
l32i a4, a2, 0 # start destination (in RAM)
l32i a5, a2, 4 # end desination (in RAM)
l32i a5, a2, 4 # end destination (in RAM)
l32i a6, a2, 8 # start source (in ROM)
addi a2, a2, 12 # next entry
beq a4, a5, 1b # skip, empty entry

2
arch/xtensa/kernel/pci.c
View File

@ -76,7 +76,7 @@ int pci_iobar_pfn(struct pci_dev *pdev, int bar, struct vm_area_struct *vma)
struct pci_controller *pci_ctrl = (struct pci_controller*) pdev->sysdata;
resource_size_t ioaddr = pci_resource_start(pdev, bar);
if (pci_ctrl == 0)
if (!pci_ctrl)
return -EINVAL; /* should never happen */
/* Convert to an offset within this PCI controller */

8
arch/xtensa/kernel/syscall.c
View File

@ -17,7 +17,6 @@
*/
#include <linux/uaccess.h>
#include <asm/syscall.h>
#include <asm/unistd.h>
#include <linux/linkage.h>
#include <linux/stringify.h>
#include <linux/errno.h>
@ -28,12 +27,9 @@
#include <linux/sched/mm.h>
#include <linux/shm.h>
syscall_t sys_call_table[__NR_syscalls] /* FIXME __cacheline_aligned */= {
[0 ... __NR_syscalls - 1] = (syscall_t)&sys_ni_syscall,
#define __SYSCALL(nr, entry, nargs)[nr] = (syscall_t)entry,
syscall_t sys_call_table[] /* FIXME __cacheline_aligned */= {
#define __SYSCALL(nr, entry) (syscall_t)entry,
#include <asm/syscall_table.h>
#undef __SYSCALL
};
#define COLOUR_ALIGN(addr, pgoff) \

14
arch/xtensa/kernel/syscalls/Makefile
View File

@ -6,20 +6,14 @@ _dummy := $(shell [ -d '$(uapi)' ] || mkdir -p '$(uapi)') \
$(shell [ -d '$(kapi)' ] || mkdir -p '$(kapi)')
syscall := $(src)/syscall.tbl
syshdr := $(srctree)/$(src)/syscallhdr.sh
systbl := $(srctree)/$(src)/syscalltbl.sh
syshdr := $(srctree)/scripts/syscallhdr.sh
systbl := $(srctree)/scripts/syscalltbl.sh
quiet_cmd_syshdr = SYSHDR $@
cmd_syshdr = $(CONFIG_SHELL) '$(syshdr)' '$<' '$@' \
'$(syshdr_abis_$(basetarget))' \
'$(syshdr_pfx_$(basetarget))' \
'$(syshdr_offset_$(basetarget))'
cmd_syshdr = $(CONFIG_SHELL) $(syshdr) --emit-nr $< $@
quiet_cmd_systbl = SYSTBL $@
cmd_systbl = $(CONFIG_SHELL) '$(systbl)' '$<' '$@' \
'$(systbl_abis_$(basetarget))' \
'$(systbl_abi_$(basetarget))' \
'$(systbl_offset_$(basetarget))'
cmd_systbl = $(CONFIG_SHELL) $(systbl) $< $@
$(uapi)/unistd_32.h: $(syscall) $(syshdr) FORCE
$(call if_changed,syshdr)

36
arch/xtensa/kernel/syscalls/syscallhdr.sh
View File

@ -1,36 +0,0 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
in="$1"
out="$2"
my_abis=`echo "($3)" | tr ',' '|'`
prefix="$4"
offset="$5"
fileguard=_UAPI_ASM_XTENSA_`basename "$out" | sed \
-e 'y/abcdefghijklmnopqrstuvwxyz/ABCDEFGHIJKLMNOPQRSTUVWXYZ/' \
-e 's/[^A-Z0-9_]/_/g' -e 's/__/_/g'`
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
printf "#ifndef %s\n" "${fileguard}"
printf "#define %s\n" "${fileguard}"
printf "\n"
nxt=0
while read nr abi name entry ; do
if [ -z "$offset" ]; then
printf "#define __NR_%s%s\t%s\n" \
"${prefix}" "${name}" "${nr}"
else
printf "#define __NR_%s%s\t(%s + %s)\n" \
"${prefix}" "${name}" "${offset}" "${nr}"
fi
nxt=$((nr+1))
done
printf "\n"
printf "#ifdef __KERNEL__\n"
printf "#define __NR_syscalls\t%s\n" "${nxt}"
printf "#endif\n"
printf "\n"
printf "#endif /* %s */\n" "${fileguard}"
) > "$out"

32
arch/xtensa/kernel/syscalls/syscalltbl.sh
View File

@ -1,32 +0,0 @@
#!/bin/sh
# SPDX-License-Identifier: GPL-2.0
in="$1"
out="$2"
my_abis=`echo "($3)" | tr ',' '|'`
my_abi="$4"
offset="$5"
emit() {
t_nxt="$1"
t_nr="$2"
t_entry="$3"
while [ $t_nxt -lt $t_nr ]; do
printf "__SYSCALL(%s, sys_ni_syscall, )\n" "${t_nxt}"
t_nxt=$((t_nxt+1))
done
printf "__SYSCALL(%s, %s, )\n" "${t_nxt}" "${t_entry}"
}
grep -E "^[0-9A-Fa-fXx]+[[:space:]]+${my_abis}" "$in" | sort -n | (
nxt=0
if [ -z "$offset" ]; then
offset=0
fi
while read nr abi name entry ; do
emit $((nxt+offset)) $((nr+offset)) $entry
nxt=$((nr+1))
done
) > "$out"

9
arch/xtensa/mm/cache.c
View File

@ -81,13 +81,8 @@ static inline void kmap_invalidate_coherent(struct page *page,
static inline void *coherent_kvaddr(struct page *page, unsigned long base,
unsigned long vaddr, unsigned long *paddr)
{
if (PageHighMem(page) || !DCACHE_ALIAS_EQ(page_to_phys(page), vaddr)) {
*paddr = page_to_phys(page);
return (void *)(base + (vaddr & DCACHE_ALIAS_MASK));
} else {
*paddr = 0;
return page_to_virt(page);
}
*paddr = page_to_phys(page);
return (void *)(base + (vaddr & DCACHE_ALIAS_MASK));
}
void clear_user_highpage(struct page *page, unsigned long vaddr)

36
arch/xtensa/mm/misc.S
View File

@ -118,20 +118,13 @@ ENTRY(clear_page_alias)
abi_entry_default
/* Skip setting up a temporary DTLB if not aliased low page. */
movi a5, PAGE_OFFSET
movi a6, 0
beqz a3, 1f
/* Setup a temporary DTLB for the addr. */
addi a6, a3, (PAGE_KERNEL | _PAGE_HW_WRITE)
mov a4, a2
wdtlb a6, a2
dsync
1: movi a3, 0
movi a3, 0
__loopi a2, a7, PAGE_SIZE, 32
s32i a3, a2, 0
s32i a3, a2, 4
@ -143,12 +136,9 @@ ENTRY(clear_page_alias)
s32i a3, a2, 28
__endla a2, a7, 32
bnez a6, 1f
abi_ret_default
/* We need to invalidate the temporary dtlb entry. */
/* We need to invalidate the temporary idtlb entry, if any. */
1: idtlb a4
idtlb a4
dsync
abi_ret_default
@ -166,22 +156,12 @@ ENTRY(copy_page_alias)
abi_entry_default
/* Skip setting up a temporary DTLB for destination if not aliased. */
movi a6, 0
movi a7, 0
beqz a4, 1f
/* Setup a temporary DTLB for destination. */
addi a6, a4, (PAGE_KERNEL | _PAGE_HW_WRITE)
wdtlb a6, a2
dsync
/* Skip setting up a temporary DTLB for source if not aliased. */
1: beqz a5, 1f
/* Setup a temporary DTLB for source. */
addi a7, a5, PAGE_KERNEL
@ -219,17 +199,11 @@ ENTRY(copy_page_alias)
/* We need to invalidate any temporary mapping! */
bnez a6, 1f
bnez a7, 2f
abi_ret_default
1: addi a2, a2, -PAGE_SIZE
addi a2, a2, -PAGE_SIZE
idtlb a2
dsync
bnez a7, 2f
abi_ret_default
2: addi a3, a3, -PAGE_SIZE+1
addi a3, a3, -PAGE_SIZE+1
idtlb a3
dsync

34
arch/xtensa/platforms/iss/include/platform/simcall-gdbio.h Normal file
View File

@ -0,0 +1,34 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2021 Cadence Design Systems Inc. */
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H
/*
* System call like services offered by the GDBIO host.
*/
#define SYS_open -2
#define SYS_close -3
#define SYS_read -4
#define SYS_write -5
#define SYS_lseek -6
static int errno;
static inline int __simc(int a, int b, int c, int d)
{
register int a1 asm("a2") = a;
register int b1 asm("a6") = b;
register int c1 asm("a3") = c;
register int d1 asm("a4") = d;
__asm__ __volatile__ (
"break 1, 14\n"
: "+r"(a1), "+r"(c1)
: "r"(b1), "r"(d1)
: "memory");
errno = c1;
return a1;
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_GDBIO_H */

73
arch/xtensa/platforms/iss/include/platform/simcall-iss.h Normal file
View File

@ -0,0 +1,73 @@
/* SPDX-License-Identifier: GPL-2.0 */
/* Copyright (C) 2021 Cadence Design Systems Inc. */
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H
/*
* System call like services offered by the simulator host.
*/
#define SYS_nop 0 /* unused */
#define SYS_exit 1 /*x*/
#define SYS_fork 2
#define SYS_read 3 /*x*/
#define SYS_write 4 /*x*/
#define SYS_open 5 /*x*/
#define SYS_close 6 /*x*/
#define SYS_rename 7 /*x 38 - waitpid */
#define SYS_creat 8 /*x*/
#define SYS_link 9 /*x (not implemented on WIN32) */
#define SYS_unlink 10 /*x*/
#define SYS_execv 11 /* n/a - execve */
#define SYS_execve 12 /* 11 - chdir */
#define SYS_pipe 13 /* 42 - time */
#define SYS_stat 14 /* 106 - mknod */
#define SYS_chmod 15
#define SYS_chown 16 /* 202 - lchown */
#define SYS_utime 17 /* 30 - break */
#define SYS_wait 18 /* n/a - oldstat */
#define SYS_lseek 19 /*x*/
#define SYS_getpid 20
#define SYS_isatty 21 /* n/a - mount */
#define SYS_fstat 22 /* 108 - oldumount */
#define SYS_time 23 /* 13 - setuid */
#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
#define SYS_socket 26
#define SYS_sendto 27
#define SYS_recvfrom 28
#define SYS_select_one 29 /* not compatible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
#define SYS_iss_argc 1000 /* returns value of argc */
#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
/*
* SYS_select_one specifiers
*/
#define XTISS_SELECT_ONE_READ 1
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
static int errno;
static inline int __simc(int a, int b, int c, int d)
{
register int a1 asm("a2") = a;
register int b1 asm("a3") = b;
register int c1 asm("a4") = c;
register int d1 asm("a5") = d;
__asm__ __volatile__ (
"simcall\n"
: "+r"(a1), "+r"(b1)
: "r"(c1), "r"(d1)
: "memory");
errno = b1;
return a1;
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_ISS_H */

104
arch/xtensa/platforms/iss/include/platform/simcall.h
View File

@ -6,82 +6,29 @@
* for more details.
*
* Copyright (C) 2001 Tensilica Inc.
* Copyright (C) 2017 Cadence Design Systems Inc.
* Copyright (C) 2017 - 2021 Cadence Design Systems Inc.
*/
#ifndef _XTENSA_PLATFORM_ISS_SIMCALL_H
#define _XTENSA_PLATFORM_ISS_SIMCALL_H
#include <linux/bug.h>
/*
* System call like services offered by the simulator host.
*/
#define SYS_nop 0 /* unused */
#define SYS_exit 1 /*x*/
#define SYS_fork 2
#define SYS_read 3 /*x*/
#define SYS_write 4 /*x*/
#define SYS_open 5 /*x*/
#define SYS_close 6 /*x*/
#define SYS_rename 7 /*x 38 - waitpid */
#define SYS_creat 8 /*x*/
#define SYS_link 9 /*x (not implemented on WIN32) */
#define SYS_unlink 10 /*x*/
#define SYS_execv 11 /* n/a - execve */
#define SYS_execve 12 /* 11 - chdir */
#define SYS_pipe 13 /* 42 - time */
#define SYS_stat 14 /* 106 - mknod */
#define SYS_chmod 15
#define SYS_chown 16 /* 202 - lchown */
#define SYS_utime 17 /* 30 - break */
#define SYS_wait 18 /* n/a - oldstat */
#define SYS_lseek 19 /*x*/
#define SYS_getpid 20
#define SYS_isatty 21 /* n/a - mount */
#define SYS_fstat 22 /* 108 - oldumount */
#define SYS_time 23 /* 13 - setuid */
#define SYS_gettimeofday 24 /*x 78 - getuid (not implemented on WIN32) */
#define SYS_times 25 /*X 43 - stime (Xtensa-specific implementation) */
#define SYS_socket 26
#define SYS_sendto 27
#define SYS_recvfrom 28
#define SYS_select_one 29 /* not compitible select, one file descriptor at the time */
#define SYS_bind 30
#define SYS_ioctl 31
#define SYS_iss_argc 1000 /* returns value of argc */
#define SYS_iss_argv_size 1001 /* bytes needed for argv & arg strings */
#define SYS_iss_set_argv 1002 /* saves argv & arg strings at given addr */
/*
* SYS_select_one specifiers
*/
#define XTISS_SELECT_ONE_READ 1
#define XTISS_SELECT_ONE_WRITE 2
#define XTISS_SELECT_ONE_EXCEPT 3
static int errno;
static inline int __simc(int a, int b, int c, int d)
{
register int a1 asm("a2") = a;
register int b1 asm("a3") = b;
register int c1 asm("a4") = c;
register int d1 asm("a5") = d;
__asm__ __volatile__ (
"simcall\n"
: "+r"(a1), "+r"(b1)
: "r"(c1), "r"(d1)
: "memory");
errno = b1;
return a1;
}
#ifdef CONFIG_XTENSA_SIMCALL_ISS
#include <platform/simcall-iss.h>
#endif
#ifdef CONFIG_XTENSA_SIMCALL_GDBIO
#include <platform/simcall-gdbio.h>
#endif
static inline int simc_exit(int exit_code)
{
#ifdef SYS_exit
return __simc(SYS_exit, exit_code, 0, 0);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
return -1;
#endif
}
static inline int simc_open(const char *file, int flags, int mode)
@ -96,7 +43,12 @@ static inline int simc_close(int fd)
static inline int simc_ioctl(int fd, int request, void *arg)
{
#ifdef SYS_ioctl
return __simc(SYS_ioctl, fd, request, (int) arg);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
return -1;
#endif
}
static inline int simc_read(int fd, void *buf, size_t count)
@ -111,9 +63,14 @@ static inline int simc_write(int fd, const void *buf, size_t count)
static inline int simc_poll(int fd)
{
#ifdef SYS_select_one
long timeval[2] = { 0, 0 };
return __simc(SYS_select_one, fd, XTISS_SELECT_ONE_READ, (int)&timeval);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
return -1;
#endif
}
static inline int simc_lseek(int fd, uint32_t off, int whence)
@ -123,18 +80,31 @@ static inline int simc_lseek(int fd, uint32_t off, int whence)
static inline int simc_argc(void)
{
#ifdef SYS_iss_argc
return __simc(SYS_iss_argc, 0, 0, 0);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
return 0;
#endif
}
static inline int simc_argv_size(void)
{
#ifdef SYS_iss_argv_size
return __simc(SYS_iss_argv_size, 0, 0, 0);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
return 0;
#endif
}
static inline void simc_argv(void *buf)
{
#ifdef SYS_iss_set_argv
__simc(SYS_iss_set_argv, (int)buf, 0, 0);
#else
WARN_ONCE(1, "%s: not implemented\n", __func__);
#endif
}
#endif /* _XTENSA_PLATFORM_ISS_SIMCALL_H */