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| author | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-11-20 10:13:46 +0000 |
|---|---|---|
| committer | gdisirio <gdisirio@35acf78f-673a-0410-8e92-d51de3d6d3f4> | 2013-11-20 10:13:46 +0000 |
| commit | 665640ba0afdd833f5a727a0741208d0282f01bb (patch) | |
| tree | a15ddfa92d8d083c8c299feeed5b12ae4f9e1537 /os/common/ports/e200 | |
| parent | cdfd3dd254fbc77b69881a24a3bc5e3ee1a5158e (diff) | |
| download | ChibiOS-665640ba0afdd833f5a727a0741208d0282f01bb.tar.gz ChibiOS-665640ba0afdd833f5a727a0741208d0282f01bb.tar.bz2 ChibiOS-665640ba0afdd833f5a727a0741208d0282f01bb.zip | |
git-svn-id: svn://svn.code.sf.net/p/chibios/svn/branches/kernel_3_dev@6500 35acf78f-673a-0410-8e92-d51de3d6d3f4
Diffstat (limited to 'os/common/ports/e200')
| -rw-r--r-- | os/common/ports/e200/compilers/GCC/ivor.s | 25 |
1 files changed, 21 insertions, 4 deletions
diff --git a/os/common/ports/e200/compilers/GCC/ivor.s b/os/common/ports/e200/compilers/GCC/ivor.s index 2f000c531..6d24c0b30 100644 --- a/os/common/ports/e200/compilers/GCC/ivor.s +++ b/os/common/ports/e200/compilers/GCC/ivor.s @@ -58,8 +58,8 @@ .globl _IVOR10
.type _IVOR10, @function
_IVOR10:
- /* Creation of the external stack frame (extctx structure).*/
- stwu %sp, -80(%sp) /* Size of the extctx structure.*/
+ /* Saving the external context (port_extctx structure).*/
+ stwu %sp, -80(%sp)
#if PPC_USE_VLE && PPC_SUPPORTS_VLE_MULTI
e_stmvsrrw 8(%sp) /* Saves PC, MSR. */
e_stmvsprw 16(%sp) /* Saves CR, LR, CTR, XER. */
@@ -90,6 +90,11 @@ _IVOR10: stw %r12, 72(%sp)
#endif /* !(PPC_USE_VLE && PPC_SUPPORTS_VLE_MULTI) */
+ /* Increasing the SPGR0 register.*/
+ mfspr %r0, 272
+ eaddi %r0, %r0, 1
+ mtspr 272, %r0
+
/* Reset DIE bit in TSR register.*/
lis %r3, 0x0800 /* DIS bit mask. */
mtspr 336, %r3 /* TSR register. */
@@ -122,8 +127,8 @@ _IVOR10: .globl _IVOR4
.type _IVOR4, @function
_IVOR4:
- /* Creation of the external stack frame (extctx structure).*/
- stwu %sp, -80(%sp) /* Size of the extctx structure.*/
+ /* Saving the external context (port_extctx structure).*/
+ stwu %sp, -80(%sp)
#if PPC_USE_VLE && PPC_SUPPORTS_VLE_MULTI
e_stmvsrrw 8(%sp) /* Saves PC, MSR. */
e_stmvsprw 16(%sp) /* Saves CR, LR, CTR, XER. */
@@ -154,6 +159,11 @@ _IVOR4: stw %r12, 72(%sp)
#endif /* !(PPC_USE_VLE && PPC_SUPPORTS_VLE_MULTI) */
+ /* Increasing the SPGR0 register.*/
+ mfspr %r0, 272
+ eaddi %r0, %r0, 1
+ mtspr 272, %r0
+
/* Software vector address from the INTC register.*/
lis %r3, INTC_IACKR@h
ori %r3, %r3, INTC_IACKR@l /* IACKR register address. */
@@ -195,6 +205,13 @@ _ivor_exit: #if CH_DBG_SYSTEM_STATE_CHECK
bl dbg_check_unlock
#endif
+
+ /* Decreasing the SPGR0 register.*/
+ mfspr %r0, 272
+ eaddi %r0, %r0, -1
+ mtspr 272, %r0
+
+ /* Restoring the external context.*/
#if PPC_USE_VLE && PPC_SUPPORTS_VLE_MULTI
e_lmvgprw 32(%sp) /* Restores GPR0, GPR3...GPR12. */
e_lmvsprw 16(%sp) /* Restores CR, LR, CTR, XER. */
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