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s390: generate register offsets into pt_regs automatically

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Use asm offsets method to generate register offsets into pt_regs,
instead of open-coding at several places.

Reviewed-by: Alexander Gordeev <agordeev@linux.ibm.com>
Signed-off-by: Heiko Carstens <hca@linux.ibm.com>
This commit is contained in:
Heiko Carstens 2022-05-23 14:42:40 +02:00
parent 85806016ac
commit 3384f135e9
3 changed files with 16 additions and 20 deletions

16
arch/s390/kernel/asm-offsets.c

@ -32,6 +32,22 @@ int main(void)
/* pt_regs offsets */
OFFSET(__PT_PSW, pt_regs, psw);
OFFSET(__PT_GPRS, pt_regs, gprs);
OFFSET(__PT_R0, pt_regs, gprs[0]);
OFFSET(__PT_R1, pt_regs, gprs[1]);
OFFSET(__PT_R2, pt_regs, gprs[2]);
OFFSET(__PT_R3, pt_regs, gprs[3]);
OFFSET(__PT_R4, pt_regs, gprs[4]);
OFFSET(__PT_R5, pt_regs, gprs[5]);
OFFSET(__PT_R6, pt_regs, gprs[6]);
OFFSET(__PT_R7, pt_regs, gprs[7]);
OFFSET(__PT_R8, pt_regs, gprs[8]);
OFFSET(__PT_R9, pt_regs, gprs[9]);
OFFSET(__PT_R10, pt_regs, gprs[10]);
OFFSET(__PT_R11, pt_regs, gprs[11]);
OFFSET(__PT_R12, pt_regs, gprs[12]);
OFFSET(__PT_R13, pt_regs, gprs[13]);
OFFSET(__PT_R14, pt_regs, gprs[14]);
OFFSET(__PT_R15, pt_regs, gprs[15]);
OFFSET(__PT_ORIG_GPR2, pt_regs, orig_gpr2);
OFFSET(__PT_FLAGS, pt_regs, flags);
OFFSET(__PT_CR1, pt_regs, cr1);

3
arch/s390/kernel/earlypgm.S

@ -7,9 +7,6 @@
#include <linux/linkage.h>
#include <asm/asm-offsets.h>
__PT_R0 = __PT_GPRS
__PT_R8 = __PT_GPRS + 64
ENTRY(early_pgm_check_handler)
stmg %r8,%r15,__LC_SAVE_AREA_SYNC
aghi %r15,-(STACK_FRAME_OVERHEAD+__PT_SIZE)

17
arch/s390/kernel/entry.S

@ -29,23 +29,6 @@
#include <asm/export.h>
#include <asm/nospec-insn.h>
__PT_R0 = __PT_GPRS
__PT_R1 = __PT_GPRS + 8
__PT_R2 = __PT_GPRS + 16
__PT_R3 = __PT_GPRS + 24
__PT_R4 = __PT_GPRS + 32
__PT_R5 = __PT_GPRS + 40
__PT_R6 = __PT_GPRS + 48
__PT_R7 = __PT_GPRS + 56
__PT_R8 = __PT_GPRS + 64
__PT_R9 = __PT_GPRS + 72
__PT_R10 = __PT_GPRS + 80
__PT_R11 = __PT_GPRS + 88
__PT_R12 = __PT_GPRS + 96
__PT_R13 = __PT_GPRS + 104
__PT_R14 = __PT_GPRS + 112
__PT_R15 = __PT_GPRS + 120
STACK_SHIFT = PAGE_SHIFT + THREAD_SIZE_ORDER
STACK_SIZE = 1 << STACK_SHIFT
STACK_INIT = STACK_SIZE - STACK_FRAME_OVERHEAD - __PT_SIZE