From 921534473a6bc2ff822f19c222970d213d2e0f76 Mon Sep 17 00:00:00 2001 From: Max Filippov Date: Tue, 20 Nov 2018 20:09:58 -0800 Subject: 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 --- arch/xtensa/include/asm/elf.h | 6 +----- arch/xtensa/kernel/process.c | 46 ------------------------------------------- 2 files changed, 1 insertion(+), 51 deletions(-) (limited to 'arch/xtensa') diff --git a/arch/xtensa/include/asm/elf.h b/arch/xtensa/include/asm/elf.h index c30c73eea267..909a6ab4f22b 100644 --- a/arch/xtensa/include/asm/elf.h +++ b/arch/xtensa/include/asm/elf.h @@ -86,11 +86,6 @@ typedef elf_greg_t elf_gregset_t[ELF_NGREG]; typedef unsigned int elf_fpreg_t; typedef elf_fpreg_t elf_fpregset_t[ELF_NFPREG]; -#define ELF_CORE_COPY_REGS(_eregs, _pregs) \ - xtensa_elf_core_copy_regs ((xtensa_gregset_t*)&(_eregs), _pregs); - -extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *); - /* * This is used to ensure we don't load something for the wrong architecture. */ @@ -114,6 +109,7 @@ extern void xtensa_elf_core_copy_regs (xtensa_gregset_t *, struct pt_regs *); #define ELF_ARCH EM_XTENSA #define ELF_EXEC_PAGESIZE PAGE_SIZE +#define CORE_DUMP_USE_REGSET /* * This is the location that an ET_DYN program is loaded if exec'ed. Typical 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; -} -- cgit v1.2.3-59-g8ed1b