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add cortex-v7a support

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How To Run:
    see TencentOS-tiny\board\ALPHA_I.MX_emmc_256ddr\README.md

TODO Next:
1. VFP support
2. fault diagnosis support
3. qemu vexpress ca9 support
4. raspberry pi support
5. SMP support
This commit is contained in:
daishengdong
2020-01-19 19:06:24 +08:00
parent 08ab1d88e1
commit 3d9d6198c8
115 changed files with 98070 additions and 29 deletions
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2
arch/arm/arm-v7m/cortex-m7/armcc/port_s.S
View File

@@ -59,7 +59,7 @@ port_clz
BX LR
GLOBAL port_sched_start
GLOBAL port_sched_start
port_sched_start
CPSID I

4
arch/arm/arm-v7m/cortex-m7/gcc/port_s.S
View File

@@ -112,7 +112,7 @@ port_sched_start:
@ restore r0, r3
LDMFD SP!, {R0 - R3}
@ load R12 and LR
LDMFD SP!, {R12, LR}
LDMFD SP!, {R12, LR}
@ load PC and discard xPSR
LDMFD SP!, {R1, R2}
@@ -191,7 +191,7 @@ _context_restore:
@ Load PSP with new process SP
MSR PSP, R0
CPSIE I
@ R0-R3, R12, LR, PC, xPSR restored automatically here