@ -1,4 +1,4 @@
From 529c68a118055c95336f91e4d166366a23a943f4 Mon Sep 17 00:00:00 2001
From 5d05b046efb079360d0175164ee04947f20f9e66 Mon Sep 17 00:00:00 2001
From: Afonso Bordado <afonsobordado@az8.co>
Date: Tue, 21 Mar 2023 18:45:20 +0000
Subject: [PATCH] linux-user: Emulate /proc/cpuinfo output for riscv
@ -10,17 +10,16 @@ Currently when querying this file the host's file is shown instead
which is slightly confusing. Emulate a basic /proc/cpuinfo file
with mmu info and an ISA string.
---
linux-user/syscall.c | 33 +++++++++++++++++++++++++++++--
tests/tcg/riscv64/Makefile.target | 1 +
tests/tcg/riscv64/cpuinfo.c | 30 ++++++++++++++++++++++++++++
3 files changed, 62 insertions(+), 2 deletions(-)
linux-user/syscall.c | 34 ++++++++++++++++++++++++++++++++--
tests/tcg/riscv64/cpuinfo.c | 30 ++++++++++++++++++++++++++++++
2 files changed, 62 insertions(+), 2 deletions(-)
create mode 100644 tests/tcg/riscv64/cpuinfo.c
diff --git a/linux-user/syscall.c b/linux-user/syscall.c
index 24b25759be..2b8a588be2 100644
index 333e6b7026..e6d85e0e8a 100644
--- a/linux-user/syscall.c
+++ b/linux-user/syscall.c
@@ -8206,7 +8206 ,8 @@ void target_exception_dump(CPUArchState *env, const char *fmt, int code)
@@ -8231,7 +8231 ,8 @@ void target_exception_dump(CPUArchState *env, const char *fmt, int code)
}
#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN || \
@ -30,7 +29,7 @@ index 24b25759be..2b8a588be2 100644
static int is_proc(const char *filename, const char *entry)
{
return strcmp(filename, entry) == 0;
@@ -8278,6 +8279,34 @@ static int open_cpuinfo(CPUArchState *cpu_env, int fd)
@@ -8309,6 +8310,35 @@ static int open_cpuinfo(CPUArchState *cpu_env, int fd)
}
#endif
@ -40,10 +39,11 @@ index 24b25759be..2b8a588be2 100644
+ int i;
+ int num_cpus = sysconf(_SC_NPROCESSORS_ONLN);
+ RISCVCPU *cpu = env_archcpu(cpu_env);
+ const RISCVCPUConfig *cfg = riscv_cpu_cfg((CPURISCVState *) cpu_env);
+ char *isa_string = riscv_isa_string(cpu);
+ const char *mmu;
+
+ if (cpu->cfg. mmu) {
+ if (cfg-> mmu) {
+ mmu = (cpu_env->xl == MXL_RV32) ? "sv32" : "sv48";
+ } else {
+ mmu = "none";
@ -65,7 +65,7 @@ index 24b25759be..2b8a588be2 100644
#if defined(TARGET_M68K)
static int open_hardware(CPUArchState *cpu_env, int fd)
{
@@ -8302,7 +8331 ,7 @@ static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int
@@ -8333,7 +8363 ,7 @@ static int do_openat(CPUArchState *cpu_env, int dirfd, const char *pathname, int
#if HOST_BIG_ENDIAN != TARGET_BIG_ENDIAN
{ "/proc/net/route", open_net_route, is_proc },
#endif
@ -74,16 +74,6 @@ index 24b25759be..2b8a588be2 100644
{ "/proc/cpuinfo", open_cpuinfo, is_proc },
#endif
#if defined(TARGET_M68K)
diff --git a/tests/tcg/riscv64/Makefile.target b/tests/tcg/riscv64/Makefile.target
index b5b89dfb0e..f455e19a11 100644
--- a/tests/tcg/riscv64/Makefile.target
+++ b/tests/tcg/riscv64/Makefile.target
@@ -4,3 +4,4 @@
VPATH += $(SRC_PATH)/tests/tcg/riscv64
TESTS += test-div
TESTS += noexec
+TESTS += cpuinfo
\ No newline at end of file
diff --git a/tests/tcg/riscv64/cpuinfo.c b/tests/tcg/riscv64/cpuinfo.c
new file mode 100644
index 0000000000..296abd0a8c