From: Deepak Gupta <debug@rivosinc.com>
To: qemu-riscv@nongnu.org, qemu-devel@nongnu.org, jim.shu@sifive.com,
andy.chiu@sifive.com, jesse.huang@sifive.com,
kito.cheng@sifive.com
Cc: palmer@dabbelt.com, Alistair.Francis@wdc.com, laurent@vivier.eu,
bmeng.cn@gmail.com, liwei1518@gmail.com,
dbarboza@ventanamicro.com, zhiwei_liu@linux.alibaba.com,
Deepak Gupta <debug@rivosinc.com>
Subject: [PATCH 08/24] linux-user/syscall: introduce prctl for indirect branch tracking
Date: Thu, 25 Jul 2024 16:45:57 -0700 [thread overview]
Message-ID: <20240725234614.3850142-9-debug@rivosinc.com> (raw)
In-Reply-To: <20240725234614.3850142-1-debug@rivosinc.com>
Each application enables indirect branch tracking (forward cfi) for itself
via prctl. Adding branch tracking prctl in linux-user/syscall.
Using same prctl code as proposed in cfi patches in kernel mailing list [1]
[1] - https://lore.kernel.org/all/20240403234054.2020347-1-debug@rivosinc.com/
Signed-off-by: Deepak Gupta <debug@rivosinc.com>
Co-developed-by: Jim Shu <jim.shu@sifive.com>
Co-developed-by: Andy Chiu <andy.chiu@sifive.com>
Co-developed-by: Jesse Huang <jesse.huang@sifive.com>
---
linux-user/syscall.c | 19 +++++++++++++++++++
1 file changed, 19 insertions(+)
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index b8c278b91d..ec157c1088 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -6295,6 +6295,17 @@ abi_long do_arch_prctl(CPUX86State *env, int code, abi_ulong addr)
# define PR_SME_VL_INHERIT (1 << 17)
#endif
+#ifndef PR_GET_INDIR_BR_LP_STATUS
+# define PR_GET_INDIR_BR_LP_STATUS 74
+#endif
+#ifndef PR_SET_INDIR_BR_LP_STATUS
+# define PR_SET_INDIR_BR_LP_STATUS 75
+# define PR_INDIR_BR_LP_ENABLE (1UL << 0)
+#endif
+#ifndef PR_LOCK_INDIR_BR_LP_STATUS
+# define PR_LOCK_INDIR_BR_LP_STATUS 76
+#endif
+
#include "target_prctl.h"
static abi_long do_prctl_inval0(CPUArchState *env)
@@ -6477,6 +6488,14 @@ static abi_long do_prctl(CPUArchState *env, abi_long option, abi_long arg2,
case PR_SET_TSC:
/* Disable to prevent the target disabling stuff we need. */
return -TARGET_EINVAL;
+ case PR_GET_INDIR_BR_LP_STATUS:
+ case PR_SET_INDIR_BR_LP_STATUS:
+ case PR_LOCK_INDIR_BR_LP_STATUS:
+#ifndef do_prctl_cfi
+ return do_prctl_inval1(env, arg2);
+#else
+ return do_prctl_cfi(env, option, arg2);
+#endif
default:
qemu_log_mask(LOG_UNIMP, "Unsupported prctl: " TARGET_ABI_FMT_ld "\n",
--
2.44.0
next prev parent reply other threads:[~2024-07-25 23:50 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-07-25 23:45 [PATCH 00/24] riscv support for control flow integrity extensions Deepak Gupta
2024-07-25 23:45 ` [PATCH 01/24] target/riscv: Add zicfilp extension Deepak Gupta
2024-07-25 23:45 ` [PATCH 02/24] target/riscv: Introduce elp state and enabling controls for zicfilp Deepak Gupta
2024-07-25 23:45 ` [PATCH 03/24] target/riscv: save and restore elp state on priv transitions Deepak Gupta
2024-07-25 23:45 ` [PATCH 04/24] target/riscv: additional code information for sw check Deepak Gupta
2024-07-25 23:45 ` [PATCH 05/24] target/riscv: tracking indirect branches (fcfi) for zicfilp Deepak Gupta
2024-07-25 23:45 ` [PATCH 06/24] target/riscv: zicfilp `lpad` impl and branch tracking Deepak Gupta
2024-07-25 23:45 ` [PATCH 07/24] disas/riscv: enabled `lpad` disassembly Deepak Gupta
2024-07-25 23:45 ` Deepak Gupta [this message]
2024-07-25 23:45 ` [PATCH 09/24] linux-user/riscv: implement indirect branch tracking prctls Deepak Gupta
2024-07-25 23:45 ` [PATCH 10/24] target/riscv: Add zicfiss extension Deepak Gupta
2024-07-25 23:46 ` [PATCH 11/24] target/riscv: introduce ssp and enabling controls for zicfiss Deepak Gupta
2024-07-25 23:46 ` [PATCH 12/24] target/riscv: tb flag for shadow stack instructions Deepak Gupta
2024-07-25 23:46 ` [PATCH 13/24] target/riscv: implement zicfiss instructions Deepak Gupta
2024-07-25 23:46 ` [PATCH 14/24] target/riscv: compressed encodings for sspush and sspopchk Deepak Gupta
2024-07-25 23:46 ` [PATCH 15/24] target/riscv: mmu changes for zicfiss shadow stack protection Deepak Gupta
2024-07-25 23:46 ` [PATCH 16/24] target/riscv: shadow stack mmu index for shadow stack instructions Deepak Gupta
2024-07-25 23:46 ` [PATCH 17/24] linux-user/syscall: introduce prctl for shadow stack enable/disable Deepak Gupta
2024-07-25 23:46 ` [PATCH 18/24] linux-user/riscv: setup/teardown zicfiss shadow stack for qemu-user Deepak Gupta
2024-07-25 23:46 ` [PATCH 19/24] disas/riscv: enable disassembly for zicfiss instructions Deepak Gupta
2024-07-25 23:46 ` [PATCH 20/24] disas/riscv: enable disassembly for compressed sspush/sspopchk Deepak Gupta
2024-07-25 23:46 ` [PATCH 21/24] target/riscv: add trace-hooks for each case of sw-check exception Deepak Gupta
2024-07-25 23:46 ` [PATCH 22/24] linux-user: permit RISC-V CFI dynamic entry in VDSO Deepak Gupta
2024-07-25 23:46 ` [PATCH 23/24] linux-user: Add RISC-V zicfilp support " Deepak Gupta
2024-07-25 23:46 ` [PATCH 24/24] linux-user/riscv: Adding zicfiss/lp extension in hwprobe syscall Deepak Gupta
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240725234614.3850142-9-debug@rivosinc.com \
--to=debug@rivosinc.com \
--cc=Alistair.Francis@wdc.com \
--cc=andy.chiu@sifive.com \
--cc=bmeng.cn@gmail.com \
--cc=dbarboza@ventanamicro.com \
--cc=jesse.huang@sifive.com \
--cc=jim.shu@sifive.com \
--cc=kito.cheng@sifive.com \
--cc=laurent@vivier.eu \
--cc=liwei1518@gmail.com \
--cc=palmer@dabbelt.com \
--cc=qemu-devel@nongnu.org \
--cc=qemu-riscv@nongnu.org \
--cc=zhiwei_liu@linux.alibaba.com \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox;
as well as URLs for NNTP newsgroup(s).