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authorRichard Kuo <rkuo@codeaurora.org>2011-10-31 18:36:04 -0500
committerLinus Torvalds <torvalds@linux-foundation.org>2011-11-01 07:34:18 -0700
commit99a70aa051d2aef6a91761c2230264cfcf20ae74 (patch)
tree3944c62bdd83d6360f8e5198296a68489526e7f4 /arch/hexagon/include/asm/registers.h
parentb9398a84590be3a828c168ed25bf1fd3d637988a (diff)
downloadlinux-linaro-stable-99a70aa051d2aef6a91761c2230264cfcf20ae74.tar.gz
Hexagon: Add processor and system headers
Signed-off-by: Richard Kuo <rkuo@codeaurora.org> Signed-off-by: Linas Vepstas <linas@codeaurora.org> Acked-by: Arnd Bergmann <arnd@arndb.de> Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
Diffstat (limited to 'arch/hexagon/include/asm/registers.h')
-rw-r--r--arch/hexagon/include/asm/registers.h236
1 files changed, 236 insertions, 0 deletions
diff --git a/arch/hexagon/include/asm/registers.h b/arch/hexagon/include/asm/registers.h
new file mode 100644
index 000000000000..4dd741be855d
--- /dev/null
+++ b/arch/hexagon/include/asm/registers.h
@@ -0,0 +1,236 @@
+/*
+ * Register definitions for the Hexagon architecture
+ *
+ * Copyright (c) 2010-2011, Code Aurora Forum. All rights reserved.
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License version 2 and
+ * only version 2 as published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
+ * 02110-1301, USA.
+ */
+
+#ifndef _ASM_REGISTERS_H
+#define _ASM_REGISTERS_H
+
+#define SP r29
+
+#ifndef __ASSEMBLY__
+
+/* See kernel/entry.S for further documentation. */
+
+/*
+ * Entry code copies the event record out of guest registers into
+ * this structure (which is on the stack).
+ */
+
+struct hvm_event_record {
+ unsigned long vmel; /* Event Linkage (return address) */
+ unsigned long vmest; /* Event context - pre-event SSR values */
+ unsigned long vmpsp; /* Previous stack pointer */
+ unsigned long vmbadva; /* Bad virtual address for addressing events */
+};
+
+struct pt_regs {
+ long restart_r0; /* R0 checkpoint for syscall restart */
+ long syscall_nr; /* Only used in system calls */
+ union {
+ struct {
+ unsigned long usr;
+ unsigned long preds;
+ };
+ long long int predsusr;
+ };
+ union {
+ struct {
+ unsigned long m0;
+ unsigned long m1;
+ };
+ long long int m1m0;
+ };
+ union {
+ struct {
+ unsigned long sa1;
+ unsigned long lc1;
+ };
+ long long int lc1sa1;
+ };
+ union {
+ struct {
+ unsigned long sa0;
+ unsigned long lc0;
+ };
+ long long int lc0sa0;
+ };
+ union {
+ struct {
+ unsigned long gp;
+ unsigned long ugp;
+ };
+ long long int ugpgp;
+ };
+ /*
+ * Be extremely careful with rearranging these, if at all. Some code
+ * assumes the 32 registers exist exactly like this in memory;
+ * e.g. kernel/ptrace.c
+ * e.g. kernel/signal.c (restore_sigcontext)
+ */
+ union {
+ struct {
+ unsigned long r00;
+ unsigned long r01;
+ };
+ long long int r0100;
+ };
+ union {
+ struct {
+ unsigned long r02;
+ unsigned long r03;
+ };
+ long long int r0302;
+ };
+ union {
+ struct {
+ unsigned long r04;
+ unsigned long r05;
+ };
+ long long int r0504;
+ };
+ union {
+ struct {
+ unsigned long r06;
+ unsigned long r07;
+ };
+ long long int r0706;
+ };
+ union {
+ struct {
+ unsigned long r08;
+ unsigned long r09;
+ };
+ long long int r0908;
+ };
+ union {
+ struct {
+ unsigned long r10;
+ unsigned long r11;
+ };
+ long long int r1110;
+ };
+ union {
+ struct {
+ unsigned long r12;
+ unsigned long r13;
+ };
+ long long int r1312;
+ };
+ union {
+ struct {
+ unsigned long r14;
+ unsigned long r15;
+ };
+ long long int r1514;
+ };
+ union {
+ struct {
+ unsigned long r16;
+ unsigned long r17;
+ };
+ long long int r1716;
+ };
+ union {
+ struct {
+ unsigned long r18;
+ unsigned long r19;
+ };
+ long long int r1918;
+ };
+ union {
+ struct {
+ unsigned long r20;
+ unsigned long r21;
+ };
+ long long int r2120;
+ };
+ union {
+ struct {
+ unsigned long r22;
+ unsigned long r23;
+ };
+ long long int r2322;
+ };
+ union {
+ struct {
+ unsigned long r24;
+ unsigned long r25;
+ };
+ long long int r2524;
+ };
+ union {
+ struct {
+ unsigned long r26;
+ unsigned long r27;
+ };
+ long long int r2726;
+ };
+ union {
+ struct {
+ unsigned long r28;
+ unsigned long r29;
+ };
+ long long int r2928;
+ };
+ union {
+ struct {
+ unsigned long r30;
+ unsigned long r31;
+ };
+ long long int r3130;
+ };
+ /* VM dispatch pushes event record onto stack - we can build on it */
+ struct hvm_event_record hvmer;
+};
+
+/* Defines to conveniently access the values */
+
+/*
+ * As of the VM spec 0.5, these registers are now set/retrieved via a
+ * VM call. On the in-bound side, we just fetch the values
+ * at the entry points and stuff them into the old record in pt_regs.
+ * However, on the outbound side, probably at VM rte, we set the
+ * registers back.
+ */
+
+#define pt_elr(regs) ((regs)->hvmer.vmel)
+#define pt_set_elr(regs, val) ((regs)->hvmer.vmel = (val))
+#define pt_cause(regs) ((regs)->hvmer.vmest & (HVM_VMEST_CAUSE_MSK))
+#define user_mode(regs) \
+ (((regs)->hvmer.vmest & (HVM_VMEST_UM_MSK << HVM_VMEST_UM_SFT)) != 0)
+#define ints_enabled(regs) \
+ (((regs)->hvmer.vmest & (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT)) != 0)
+#define pt_psp(regs) ((regs)->hvmer.vmpsp)
+#define pt_badva(regs) ((regs)->hvmer.vmbadva)
+
+#define pt_set_rte_sp(regs, sp) do {\
+ pt_psp(regs) = (sp);\
+ (regs)->SP = (unsigned long) &((regs)->hvmer);\
+ } while (0)
+
+#define pt_set_kmode(regs) \
+ (regs)->hvmer.vmest = (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT)
+
+#define pt_set_usermode(regs) \
+ (regs)->hvmer.vmest = (HVM_VMEST_UM_MSK << HVM_VMEST_UM_SFT) \
+ | (HVM_VMEST_IE_MSK << HVM_VMEST_IE_SFT)
+
+#endif /* ifndef __ASSEMBLY */
+
+#endif