| /openbmc/linux/arch/riscv/kernel/compat_vdso/ |
| H A D | rt_sigreturn.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | compat_vdso.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | compat_vdso.lds.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | flush_icache.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | gen_compat_vdso_offsets.sh | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | note.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | .gitignore | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | getcpu.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| H A D | Makefile | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| /openbmc/linux/arch/riscv/kernel/vdso/ |
| H A D | vdso.S | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| /openbmc/linux/arch/riscv/include/asm/ |
| H A D | vdso.h | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| /openbmc/linux/arch/riscv/ |
| H A D | Makefile | 88bd24d7 Sat Jun 25 10:42:07 CDT 2022 Emil Renner Berthing <emil.renner.berthing@canonical.com> riscv: compat: vdso: Fix vdso_install target
When CONFIG_COMPAT=y the vdso_install target fails:
$ make ARCH=riscv CROSS_COMPILE=riscv64-linux-gnu- vdso_install
INSTALL vdso.so
make[1]: *** No rule to make target 'vdso_install'. Stop.
make: *** [arch/riscv/Makefile:112: vdso_install] Error 2
The problem is that arch/riscv/kernel/compat_vdso/Makefile doesn't
have a vdso_install target, but instead calls it compat_vdso_install.
Signed-off-by: Emil Renner Berthing <emil.renner.berthing@canonical.com>
Link: https://lore.kernel.org/r/20220625154207.80972-1-emil.renner.berthing@canonical.com
Fixes: 0715372a06ce ("riscv: compat: vdso: Add COMPAT_VDSO base code implementation")
Cc: stable@vger.kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|
| /openbmc/linux/arch/riscv/kernel/ |
| H A D | Makefile | 0715372a Tue Apr 05 02:13:10 CDT 2022 Guo Ren <guoren@linux.alibaba.com> riscv: compat: vdso: Add COMPAT_VDSO base code implementation
There is no vgettimeofday supported in rv32 that makes simple to
generate rv32 vdso code which only needs riscv64 compiler. Other
architectures need change compiler or -m (machine parameter) to
support vdso32 compiling. If rv32 support vgettimeofday (which
cause C compile) in future, we would add CROSS_COMPILE to support
that makes more requirement on compiler enviornment.
linux-rv64/arch/riscv/kernel/compat_vdso/compat_vdso.so.dbg:
file format elf64-littleriscv
Disassembly of section .text:
0000000000000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
000000000000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
0000000000000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
linux-rv32/arch/riscv/kernel/vdso/vdso.so.dbg:
file format elf32-littleriscv
Disassembly of section .text:
00000800 <__vdso_rt_sigreturn>:
800: 08b00893 li a7,139
804: 00000073 ecall
808: 0000 unimp
...
0000080c <__vdso_getcpu>:
80c: 0a800893 li a7,168
810: 00000073 ecall
814: 8082 ret
...
00000818 <__vdso_flush_icache>:
818: 10300893 li a7,259
81c: 00000073 ecall
820: 8082 ret
Finally, reuse all *.S from vdso in compat_vdso that makes
implementation clear and readable.
Signed-off-by: Guo Ren <guoren@linux.alibaba.com>
Signed-off-by: Guo Ren <guoren@kernel.org>
Tested-by: Heiko Stuebner <heiko@sntech.de>
Link: https://lore.kernel.org/r/20220405071314.3225832-17-guoren@kernel.org
Signed-off-by: Palmer Dabbelt <palmer@rivosinc.com>
|