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Message-Id: <201103011934.p21JYcd3010304@farm-0010.internal.tilera.com>
Date: Mon, 28 Feb 2011 15:19:10 -0500
From: Chris Metcalf <cmetcalf@...era.com>
To: linux-kernel@...r.kernel.org
Subject: [PATCH] arch/tile: sync up with <arch/sim.h> and <arch/sim_def.h> changes
These headers are used by Linux but are maintained upstream.
This change incorporates a few minor fixes to these headers,
including a new sim_print() function, cleaner support for the
sim_syscall() API, and a sim_query_cpu_speed() method.
Signed-off-by: Chris Metcalf <cmetcalf@...era.com>
---
arch/tile/include/arch/sim.h | 48 ++++++++++++++++++++++++++++---------
arch/tile/include/arch/sim_def.h | 3 ++
2 files changed, 39 insertions(+), 12 deletions(-)
diff --git a/arch/tile/include/arch/sim.h b/arch/tile/include/arch/sim.h
index 74b7c16..e54b7b0 100644
--- a/arch/tile/include/arch/sim.h
+++ b/arch/tile/include/arch/sim.h
@@ -152,16 +152,33 @@ sim_dump(unsigned int mask)
/**
* Print a string to the simulator stdout.
*
- * @param str The string to be written; a newline is automatically added.
+ * @param str The string to be written.
+ */
+static __inline void
+sim_print(const char* str)
+{
+ for ( ; *str != '\0'; str++)
+ {
+ __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
+ (*str << _SIM_CONTROL_OPERATOR_BITS));
+ }
+ __insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
+ (SIM_PUTC_FLUSH_BINARY << _SIM_CONTROL_OPERATOR_BITS));
+}
+
+
+/**
+ * Print a string to the simulator stdout.
+ *
+ * @param str The string to be written (a newline is automatically added).
*/
static __inline void
sim_print_string(const char* str)
{
- int i;
- for (i = 0; str[i] != 0; i++)
+ for ( ; *str != '\0'; str++)
{
__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
- (str[i] << _SIM_CONTROL_OPERATOR_BITS));
+ (*str << _SIM_CONTROL_OPERATOR_BITS));
}
__insn_mtspr(SPR_SIM_CONTROL, SIM_CONTROL_PUTC |
(SIM_PUTC_FLUSH_STRING << _SIM_CONTROL_OPERATOR_BITS));
@@ -203,7 +220,7 @@ sim_command(const char* str)
* we are passing to the simulator are actually valid in the registers
* (i.e. returned from memory) prior to the SIM_CONTROL spr.
*/
-static __inline int _sim_syscall0(int val)
+static __inline long _sim_syscall0(int val)
{
long result;
__asm__ __volatile__ ("mtspr SIM_CONTROL, r0"
@@ -211,7 +228,7 @@ static __inline int _sim_syscall0(int val)
return result;
}
-static __inline int _sim_syscall1(int val, long arg1)
+static __inline long _sim_syscall1(int val, long arg1)
{
long result;
__asm__ __volatile__ ("{ and zero, r1, r1; mtspr SIM_CONTROL, r0 }"
@@ -219,7 +236,7 @@ static __inline int _sim_syscall1(int val, long arg1)
return result;
}
-static __inline int _sim_syscall2(int val, long arg1, long arg2)
+static __inline long _sim_syscall2(int val, long arg1, long arg2)
{
long result;
__asm__ __volatile__ ("{ and zero, r1, r2; mtspr SIM_CONTROL, r0 }"
@@ -233,7 +250,7 @@ static __inline int _sim_syscall2(int val, long arg1, long arg2)
the register values for arguments 3 and up may still be in flight
to the core from a stack frame reload. */
-static __inline int _sim_syscall3(int val, long arg1, long arg2, long arg3)
+static __inline long _sim_syscall3(int val, long arg1, long arg2, long arg3)
{
long result;
__asm__ __volatile__ ("{ and zero, r3, r3 };"
@@ -244,7 +261,7 @@ static __inline int _sim_syscall3(int val, long arg1, long arg2, long arg3)
return result;
}
-static __inline int _sim_syscall4(int val, long arg1, long arg2, long arg3,
+static __inline long _sim_syscall4(int val, long arg1, long arg2, long arg3,
long arg4)
{
long result;
@@ -256,7 +273,7 @@ static __inline int _sim_syscall4(int val, long arg1, long arg2, long arg3,
return result;
}
-static __inline int _sim_syscall5(int val, long arg1, long arg2, long arg3,
+static __inline long _sim_syscall5(int val, long arg1, long arg2, long arg3,
long arg4, long arg5)
{
long result;
@@ -268,7 +285,6 @@ static __inline int _sim_syscall5(int val, long arg1, long arg2, long arg3,
return result;
}
-
/**
* Make a special syscall to the simulator itself, if running under
* simulation. This is used as the implementation of other functions
@@ -281,7 +297,8 @@ static __inline int _sim_syscall5(int val, long arg1, long arg2, long arg3,
*/
#define _sim_syscall(syscall_num, nr, args...) \
_sim_syscall##nr( \
- ((syscall_num) << _SIM_CONTROL_OPERATOR_BITS) | SIM_CONTROL_SYSCALL, args)
+ ((syscall_num) << _SIM_CONTROL_OPERATOR_BITS) | SIM_CONTROL_SYSCALL, \
+ ##args)
/* Values for the "access_mask" parameters below. */
@@ -365,6 +382,13 @@ sim_validate_lines_evicted(unsigned long long pa, unsigned long length)
}
+/* Return the current CPU speed in cycles per second. */
+static __inline long
+sim_query_cpu_speed(void)
+{
+ return _sim_syscall(SIM_SYSCALL_QUERY_CPU_SPEED, 0);
+}
+
#endif /* !__DOXYGEN__ */
diff --git a/arch/tile/include/arch/sim_def.h b/arch/tile/include/arch/sim_def.h
index 7a17082..4b44a2b 100644
--- a/arch/tile/include/arch/sim_def.h
+++ b/arch/tile/include/arch/sim_def.h
@@ -243,6 +243,9 @@
*/
#define SIM_SYSCALL_VALIDATE_LINES_EVICTED 5
+/** Syscall number for sim_query_cpu_speed(). */
+#define SIM_SYSCALL_QUERY_CPU_SPEED 6
+
/*
* Bit masks which can be shifted by 8, combined with
--
1.6.5.2
--
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