linux-user: Add ARM get_tls syscall support

Message ID 20180416091845.7315-1-christophe.lyon@st.com
State New
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Series
  • linux-user: Add ARM get_tls syscall support
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Commit Message

Christophe Lyon April 16, 2018, 9:18 a.m.
Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>
Signed-off-by: Christophe Lyon <christophe.lyon@st.com>


-- 
2.6.3

Comments

Peter Maydell April 16, 2018, 9:24 a.m. | #1
On 16 April 2018 at 10:18, Christophe Lyon <christophe.lyon@st.com> wrote:
> Co-Authored-By: Mickaël Guêné <mickael.guene@st.com>

> Signed-off-by: Christophe Lyon <christophe.lyon@st.com>



I think it's worth mentioning in the commit message that this
is a new Arm-specific syscall added in kernel version 4.15.

Otherwise
Reviewed-by: Peter Maydell <peter.maydell@linaro.org>


thanks
-- PMM

Patch

diff --git a/linux-user/arm/target_syscall.h b/linux-user/arm/target_syscall.h
index 94e2a42..afc0772 100644
--- a/linux-user/arm/target_syscall.h
+++ b/linux-user/arm/target_syscall.h
@@ -16,6 +16,7 @@  struct target_pt_regs {
 #define ARM_NR_breakpoint (ARM_NR_BASE + 1)
 #define ARM_NR_cacheflush (ARM_NR_BASE + 2)
 #define ARM_NR_set_tls	  (ARM_NR_BASE + 5)
+#define ARM_NR_get_tls    (ARM_NR_BASE + 6)
 
 #define ARM_NR_semihosting	  0x123456
 #define ARM_NR_thumb_semihosting  0xAB
diff --git a/linux-user/main.c b/linux-user/main.c
index 8907a84..2acac36 100644
--- a/linux-user/main.c
+++ b/linux-user/main.c
@@ -720,6 +720,9 @@  void cpu_loop(CPUARMState *env)
                         case ARM_NR_breakpoint:
                             env->regs[15] -= env->thumb ? 2 : 4;
                             goto excp_debug;
+                        case ARM_NR_get_tls:
+                            env->regs[0] = cpu_get_tls(env);
+                            break;
                         default:
                             gemu_log("qemu: Unsupported ARM syscall: 0x%x\n",
                                      n);