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| author | Vineet Gupta <vgupta@kernel.org> | 2020-05-20 20:23:21 +0200 |
|---|---|---|
| committer | Vineet Gupta <vgupta@kernel.org> | 2023-12-09 01:30:24 +0100 |
| commit | 3a02ec2f0b304af6b38e9cc5a009bf517d38e72c (patch) | |
| tree | 0064d578f25f7e4c6acdf3b19ef21834e9c67d66 /arch/arc | |
| parent | ARC: entry: SAVE_ABI_CALLEE_REG: ISA/ABI specific helper (diff) | |
| download | linux-3a02ec2f0b304af6b38e9cc5a009bf517d38e72c.tar.xz linux-3a02ec2f0b304af6b38e9cc5a009bf517d38e72c.zip | |
ARC: entry: move ARCompact specific bits out of entry.h
- PUSHAUX/POPAUX helpers to ARCompact entry
- use gas provided "push"/pop pseudo instructions
Signed-off-by: Vineet Gupta <vgupta@kernel.org>
Diffstat (limited to 'arch/arc')
| -rw-r--r-- | arch/arc/include/asm/entry-compact.h | 55 | ||||
| -rw-r--r-- | arch/arc/include/asm/entry.h | 66 |
2 files changed, 54 insertions, 67 deletions
diff --git a/arch/arc/include/asm/entry-compact.h b/arch/arc/include/asm/entry-compact.h index 9841f1186417..92c3e9f13252 100644 --- a/arch/arc/include/asm/entry-compact.h +++ b/arch/arc/include/asm/entry-compact.h @@ -33,6 +33,59 @@ #include <asm/irqflags-compact.h> #include <asm/thread_info.h> /* For THREAD_SIZE */ +/* Note on the LD/ST addr modes with addr reg wback + * + * LD.a same as LD.aw + * + * LD.a reg1, [reg2, x] => Pre Incr + * Eff Addr for load = [reg2 + x] + * + * LD.ab reg1, [reg2, x] => Post Incr + * Eff Addr for load = [reg2] + */ + +.macro PUSHAX aux + lr r9, [\aux] + push r9 +.endm + +.macro POPAX aux + pop r9 + sr r9, [\aux] +.endm + +.macro SAVE_R0_TO_R12 + push r0 + push r1 + push r2 + push r3 + push r4 + push r5 + push r6 + push r7 + push r8 + push r9 + push r10 + push r11 + push r12 +.endm + +.macro RESTORE_R12_TO_R0 + pop r12 + pop r11 + pop r10 + pop r9 + pop r8 + pop r7 + pop r6 + pop r5 + pop r4 + pop r3 + pop r2 + pop r1 + pop r0 +.endm + .macro SAVE_ABI_CALLEE_REGS push r13 push r14 @@ -267,7 +320,7 @@ SWITCH_TO_KERNEL_STK - PUSH 0x003\LVL\()abcd /* Dummy ECR */ + st.a 0x003\LVL\()abcd, [sp, -4] /* Dummy ECR */ sub sp, sp, 8 /* skip orig_r0 (not needed) skip pt_regs->sp, already saved above */ diff --git a/arch/arc/include/asm/entry.h b/arch/arc/include/asm/entry.h index 8e4e40d2d54a..cf1ba376e992 100644 --- a/arch/arc/include/asm/entry.h +++ b/arch/arc/include/asm/entry.h @@ -21,72 +21,6 @@ #include <asm/entry-arcv2.h> #endif -/* Note on the LD/ST addr modes with addr reg wback - * - * LD.a same as LD.aw - * - * LD.a reg1, [reg2, x] => Pre Incr - * Eff Addr for load = [reg2 + x] - * - * LD.ab reg1, [reg2, x] => Post Incr - * Eff Addr for load = [reg2] - */ - -.macro PUSH reg - st.a \reg, [sp, -4] -.endm - -.macro PUSHAX aux - lr r9, [\aux] - PUSH r9 -.endm - -.macro POP reg - ld.ab \reg, [sp, 4] -.endm - -.macro POPAX aux - POP r9 - sr r9, [\aux] -.endm - -/*-------------------------------------------------------------- - * Helpers to save/restore Scratch Regs: - * used by Interrupt/Exception Prologue/Epilogue - *-------------------------------------------------------------*/ -.macro SAVE_R0_TO_R12 - PUSH r0 - PUSH r1 - PUSH r2 - PUSH r3 - PUSH r4 - PUSH r5 - PUSH r6 - PUSH r7 - PUSH r8 - PUSH r9 - PUSH r10 - PUSH r11 - PUSH r12 -.endm - -.macro RESTORE_R12_TO_R0 - POP r12 - POP r11 - POP r10 - POP r9 - POP r8 - POP r7 - POP r6 - POP r5 - POP r4 - POP r3 - POP r2 - POP r1 - POP r0 - -.endm - /* * save user mode callee regs as struct callee_regs * - needed by fork/do_signal/unaligned-access-emulation. |