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author | Max Filippov <jcmvbkbc@gmail.com> | 2018-11-21 05:09:58 +0100 |
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committer | Max Filippov <jcmvbkbc@gmail.com> | 2018-12-17 22:48:22 +0100 |
commit | 921534473a6bc2ff822f19c222970d213d2e0f76 (patch) | |
tree | 4b6b115cf986de3b0514ce8c9c55c91fdd41c709 /arch/xtensa/kernel/process.c | |
parent | xtensa: implement TIE regset (diff) | |
download | linux-921534473a6bc2ff822f19c222970d213d2e0f76.tar.xz linux-921534473a6bc2ff822f19c222970d213d2e0f76.zip |
xtensa: enable CORE_DUMP_USE_REGSET
Drop xtensa_elf_core_copy_regs function, ELF_CORE_COPY_REGS macro, and
dump_fpu function. Define CORE_DUMP_USE_REGSET to make ELF core dumper
use regset interface.
Signed-off-by: Max Filippov <jcmvbkbc@gmail.com>
Diffstat (limited to 'arch/xtensa/kernel/process.c')
-rw-r--r-- | arch/xtensa/kernel/process.c | 46 |
1 files changed, 0 insertions, 46 deletions
diff --git a/arch/xtensa/kernel/process.c b/arch/xtensa/kernel/process.c index 27be75e88ed3..74969a437a37 100644 --- a/arch/xtensa/kernel/process.c +++ b/arch/xtensa/kernel/process.c @@ -326,49 +326,3 @@ unsigned long get_wchan(struct task_struct *p) } while (count++ < 16); return 0; } - -/* - * xtensa_gregset_t and 'struct pt_regs' are vastly different formats - * of processor registers. Besides different ordering, - * xtensa_gregset_t contains non-live register information that - * 'struct pt_regs' does not. Exception handling (primarily) uses - * 'struct pt_regs'. Core files and ptrace use xtensa_gregset_t. - * - */ - -void xtensa_elf_core_copy_regs (xtensa_gregset_t *elfregs, struct pt_regs *regs) -{ - unsigned long wb, ws, wm; - int live, last; - - wb = regs->windowbase; - ws = regs->windowstart; - wm = regs->wmask; - ws = ((ws >> wb) | (ws << (WSBITS - wb))) & ((1 << WSBITS) - 1); - - /* Don't leak any random bits. */ - - memset(elfregs, 0, sizeof(*elfregs)); - - /* Note: PS.EXCM is not set while user task is running; its - * being set in regs->ps is for exception handling convenience. - */ - - elfregs->pc = regs->pc; - elfregs->ps = (regs->ps & ~(1 << PS_EXCM_BIT)); - elfregs->lbeg = regs->lbeg; - elfregs->lend = regs->lend; - elfregs->lcount = regs->lcount; - elfregs->sar = regs->sar; - elfregs->windowstart = ws; - - live = (wm & 2) ? 4 : (wm & 4) ? 8 : (wm & 8) ? 12 : 16; - last = XCHAL_NUM_AREGS - (wm >> 4) * 4; - memcpy(elfregs->a, regs->areg, live * 4); - memcpy(elfregs->a + last, regs->areg + last, (wm >> 4) * 16); -} - -int dump_fpu(void) -{ - return 0; -} |