From: Ian Campbell <ian.campbell@citrix.com>
To: xen-devel@lists.xen.org
Cc: julien.grall@citrix.com, tim@xen.org,
Ian Campbell <ian.campbell@citrix.com>,
stefano.stabellini@eu.citrix.com
Subject: [PATCH 10/17] xen: arm: some cleanups to hypervisor entry code.
Date: Mon, 29 Jul 2013 13:20:59 +0100 [thread overview]
Message-ID: <1375100466-7564-10-git-send-email-ian.campbell@citrix.com> (raw)
In-Reply-To: <1375100431.14896.95.camel@kazak.uk.xensource.com>
Tweak the case of some system registers for consistency.
There is no need to export return_to_hypervisor or return_to_guest.
Signed-off-by: Ian Campbell <ian.campbell@citrix.com>
---
v4: split out from "xen: arm: handle traps from 64-bit guests"
Do not export return_to_guest either.
---
xen/arch/arm/arm32/entry.S | 4 ++--
xen/arch/arm/arm64/entry.S | 16 ++++++++--------
2 files changed, 10 insertions(+), 10 deletions(-)
diff --git a/xen/arch/arm/arm32/entry.S b/xen/arch/arm/arm32/entry.S
index 1c26835..6cdf0aa 100644
--- a/xen/arch/arm/arm32/entry.S
+++ b/xen/arch/arm/arm32/entry.S
@@ -93,7 +93,7 @@ ENTRY(return_to_new_vcpu)
cmp r11, #PSR_MODE_HYP
beq return_to_hypervisor
/* Fall thru */
-ENTRY(return_to_guest)
+return_to_guest:
mov r11, sp
bic sp, #7 /* Align the stack pointer */
bl leave_hypervisor_tail /* Disables interrupts on return */
@@ -108,7 +108,7 @@ ENTRY(return_to_guest)
RESTORE_ONE_BANKED(R8_fiq); RESTORE_ONE_BANKED(R9_fiq); RESTORE_ONE_BANKED(R10_fiq)
RESTORE_ONE_BANKED(R11_fiq); RESTORE_ONE_BANKED(R12_fiq);
/* Fall thru */
-ENTRY(return_to_hypervisor)
+return_to_hypervisor:
cpsid i
ldr lr, [sp, #UREGS_lr]
ldr r11, [sp, #UREGS_pc]
diff --git a/xen/arch/arm/arm64/entry.S b/xen/arch/arm/arm64/entry.S
index b5af1e2..c0d2bd8 100644
--- a/xen/arch/arm/arm64/entry.S
+++ b/xen/arch/arm/arm64/entry.S
@@ -26,7 +26,7 @@ lr .req x30 // link register
.macro entry_guest, compat
add x21, sp, #UREGS_SPSR_el1
- mrs x23, SPSR_EL1
+ mrs x23, SPSR_el1
str x23, [x21]
.if \compat == 0 /* Aarch64 mode */
@@ -40,16 +40,16 @@ lr .req x30 // link register
mrs x23, ELR_el1
stp x22, x23, [x21]
- .else /* Aarch32 mode */
+ .else /* Aarch32 mode */
add x21, sp, #UREGS_SPSR_fiq
- mrs x22, spsr_fiq
- mrs x23, spsr_irq
+ mrs x22, SPSR_fiq
+ mrs x23, SPSR_irq
stp w22, w23, [x21]
add x21, sp, #UREGS_SPSR_und
- mrs x22, spsr_und
- mrs x23, spsr_abt
+ mrs x22, SPSR_und
+ mrs x23, SPSR_abt
stp w22, w23, [x21]
.endif
@@ -186,10 +186,10 @@ ENTRY(return_to_new_vcpu)
ccmp x21, #PSR_MODE_EL2h, #0x4, ne
b.eq return_to_hypervisor /* Yes */
/* Fall thru */
-ENTRY(return_to_guest)
+return_to_guest:
bl leave_hypervisor_tail /* Disables interrupts on return */
/* Fall thru */
-ENTRY(return_to_hypervisor)
+return_to_hypervisor:
msr daifset, #2 /* Mask interrupts */
ldp x21, x22, [sp, #UREGS_PC] // load ELR, SPSR
--
1.7.2.5
next prev parent reply other threads:[~2013-07-29 12:20 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2013-07-29 12:20 [PATCH v4 00/17] xen: arm: 64-bit dom0 kernel support Ian Campbell
2013-07-29 12:20 ` [PATCH 01/17] xen: arm: tweak arm64 stack frame layout Ian Campbell
2013-07-29 12:20 ` [PATCH 02/17] xen: arm: rename 32-bit specific zImage field offset constants Ian Campbell
2013-07-29 12:20 ` [PATCH 03/17] xen: arm: support for loading 64-bit zImage dom0 Ian Campbell
2013-07-29 12:20 ` [PATCH 04/17] xen: arm: support building a 64-bit dom0 domain Ian Campbell
2013-07-29 18:29 ` Julien Grall
2013-07-30 9:34 ` Ian Campbell
2013-07-30 9:43 ` Julien Grall
2013-08-02 16:07 ` Ian Campbell
2013-07-29 12:20 ` [PATCH 05/17] xen: arm: precalculate VTTBR_EL2 for a domain when setting up its p2m Ian Campbell
2013-07-29 12:20 ` [PATCH 06/17] xen: arm: improve register dump output for 64-bit guest (and more generally too) Ian Campbell
2013-07-29 12:53 ` Tim Deegan
2013-07-29 12:20 ` [PATCH 07/17] xen: arm: support dumping 64-bit guest stack Ian Campbell
2013-07-29 12:20 ` [PATCH 08/17] xen: arm: show less words in a line of a stack trace in 64-bit builds Ian Campbell
2013-07-29 12:20 ` [PATCH 09/17] xen: arm: Set EL1 register width in HCR_EL2 during context switch Ian Campbell
2013-07-29 12:20 ` Ian Campbell [this message]
2013-07-29 12:56 ` [PATCH 10/17] xen: arm: some cleanups to hypervisor entry code Tim Deegan
2013-07-29 12:21 ` [PATCH 11/17] xen: arm: refactor 64-bit return from trap path Ian Campbell
2013-07-29 13:01 ` Tim Deegan
2013-07-29 12:21 ` [PATCH 12/17] xen: arm: handle traps from 64-bit guests Ian Campbell
2013-07-29 13:49 ` Tim Deegan
2013-07-29 12:21 ` [PATCH 13/17] xen: arm: handle hypercalls " Ian Campbell
2013-07-29 12:21 ` [PATCH 14/17] xen: arm: handle 64-bit system register access traps Ian Campbell
2013-07-29 12:21 ` [PATCH 15/17] xen: arm: align some comments Ian Campbell
2013-07-29 12:21 ` [PATCH 16/17] xen: arm: document HCR bits Ian Campbell
2013-07-29 12:21 ` [PATCH 17/17] xen: arm: Handle SMC from 64-bit guests Ian Campbell
2013-07-29 13:53 ` Tim Deegan
2013-07-29 12:21 ` [PATCH v4 00/17] xen: arm: 64-bit dom0 kernel support Ian Campbell
2013-07-29 15:58 ` Ian Campbell
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