diff options
Diffstat (limited to 'arch/sh/lib64')
| -rw-r--r-- | arch/sh/lib64/.gitignore | 1 | ||||
| -rw-r--r-- | arch/sh/lib64/Makefile | 2 | ||||
| -rw-r--r-- | arch/sh/lib64/c-checksum.c | 214 | ||||
| -rw-r--r-- | arch/sh/lib64/dbg.c | 182 | ||||
| -rw-r--r-- | arch/sh/lib64/panic.c | 43 | ||||
| -rw-r--r-- | arch/sh/lib64/sdivsi3.S | 6 | ||||
| -rw-r--r-- | arch/sh/lib64/udelay.c | 2 |
7 files changed, 7 insertions, 443 deletions
diff --git a/arch/sh/lib64/.gitignore b/arch/sh/lib64/.gitignore deleted file mode 100644 index 3508c2cb23c..00000000000 --- a/arch/sh/lib64/.gitignore +++ /dev/null @@ -1 +0,0 @@ -syscalltab.h diff --git a/arch/sh/lib64/Makefile b/arch/sh/lib64/Makefile index 4bacb9e8347..334bb2da36e 100644 --- a/arch/sh/lib64/Makefile +++ b/arch/sh/lib64/Makefile @@ -10,7 +10,7 @@ # # Panic should really be compiled as PIC -lib-y := udelay.o c-checksum.o dbg.o panic.o memcpy.o memset.o \ +lib-y := udelay.o dbg.o panic.o memcpy.o memset.o \ copy_user_memcpy.o copy_page.o clear_page.o strcpy.o strlen.o # Extracted from libgcc diff --git a/arch/sh/lib64/c-checksum.c b/arch/sh/lib64/c-checksum.c deleted file mode 100644 index 73c0877e3a2..00000000000 --- a/arch/sh/lib64/c-checksum.c +++ /dev/null @@ -1,214 +0,0 @@ -/* - * arch/sh/lib64/c-checksum.c - * - * This file contains network checksum routines that are better done - * in an architecture-specific manner due to speed.. - */ -#include <linux/string.h> -#include <linux/errno.h> -#include <linux/kernel.h> -#include <linux/module.h> -#include <asm/byteorder.h> -#include <asm/uaccess.h> - -static inline unsigned short from64to16(unsigned long long x) -{ - /* add up 32-bit words for 33 bits */ - x = (x & 0xffffffff) + (x >> 32); - /* add up 16-bit and 17-bit words for 17+c bits */ - x = (x & 0xffff) + (x >> 16); - /* add up 16-bit and 2-bit for 16+c bit */ - x = (x & 0xffff) + (x >> 16); - /* add up carry.. */ - x = (x & 0xffff) + (x >> 16); - return x; -} - -static inline unsigned short foldto16(unsigned long x) -{ - /* add up 16-bit for 17 bits */ - x = (x & 0xffff) + (x >> 16); - /* add up carry.. */ - x = (x & 0xffff) + (x >> 16); - return x; -} - -static inline unsigned short myfoldto16(unsigned long long x) -{ - /* Fold down to 32-bits so we don't lose in the typedef-less - network stack. */ - /* 64 to 33 */ - x = (x & 0xffffffff) + (x >> 32); - /* 33 to 32 */ - x = (x & 0xffffffff) + (x >> 32); - - /* add up 16-bit for 17 bits */ - x = (x & 0xffff) + (x >> 16); - /* add up carry.. */ - x = (x & 0xffff) + (x >> 16); - return x; -} - -#define odd(x) ((x)&1) -#define U16(x) ntohs(x) - -static unsigned long do_csum(const unsigned char *buff, int len) -{ - int odd, count; - unsigned long result = 0; - - pr_debug("do_csum buff %p, len %d (0x%x)\n", buff, len, len); -#ifdef DEBUG - for (i = 0; i < len; i++) { - if ((i % 26) == 0) - printk("\n"); - printk("%02X ", buff[i]); - } -#endif - - if (len <= 0) - goto out; - - odd = 1 & (unsigned long) buff; - if (odd) { - result = *buff << 8; - len--; - buff++; - } - count = len >> 1; /* nr of 16-bit words.. */ - if (count) { - if (2 & (unsigned long) buff) { - result += *(unsigned short *) buff; - count--; - len -= 2; - buff += 2; - } - count >>= 1; /* nr of 32-bit words.. */ - if (count) { - unsigned long carry = 0; - do { - unsigned long w = *(unsigned long *) buff; - buff += 4; - count--; - result += carry; - result += w; - carry = (w > result); - } while (count); - result += carry; - result = (result & 0xffff) + (result >> 16); - } - if (len & 2) { - result += *(unsigned short *) buff; - buff += 2; - } - } - if (len & 1) - result += *buff; - result = foldto16(result); - if (odd) - result = ((result >> 8) & 0xff) | ((result & 0xff) << 8); - - pr_debug("\nCHECKSUM is 0x%lx\n", result); - - out: - return result; -} - -/* computes the checksum of a memory block at buff, length len, - and adds in "sum" (32-bit) */ -__wsum csum_partial(const void *buff, int len, __wsum sum) -{ - unsigned long long result = do_csum(buff, len); - - /* add in old sum, and carry.. */ - result += (__force u32)sum; - /* 32+c bits -> 32 bits */ - result = (result & 0xffffffff) + (result >> 32); - - pr_debug("csum_partial, buff %p len %d sum 0x%x result=0x%016Lx\n", - buff, len, sum, result); - - return (__force __wsum)result; -} - -/* Copy while checksumming, otherwise like csum_partial. */ -__wsum -csum_partial_copy_nocheck(const void *src, void *dst, int len, __wsum sum) -{ - sum = csum_partial(src, len, sum); - memcpy(dst, src, len); - - return sum; -} - -/* Copy from userspace and compute checksum. If we catch an exception - then zero the rest of the buffer. */ -__wsum -csum_partial_copy_from_user(const void __user *src, void *dst, int len, - __wsum sum, int *err_ptr) -{ - int missing; - - pr_debug - ("csum_partial_copy_from_user src %p, dest %p, len %d, sum %08x, err_ptr %p\n", - src, dst, len, sum, err_ptr); - missing = copy_from_user(dst, src, len); - pr_debug(" access_ok %d\n", __access_ok((unsigned long) src, len)); - pr_debug(" missing %d\n", missing); - if (missing) { - memset(dst + len - missing, 0, missing); - *err_ptr = -EFAULT; - } - - return csum_partial(dst, len, sum); -} - -/* Copy to userspace and compute checksum. */ -__wsum -csum_partial_copy_to_user(const unsigned char *src, unsigned char *dst, int len, - __wsum sum, int *err_ptr) -{ - sum = csum_partial(src, len, sum); - - if (copy_to_user(dst, src, len)) - *err_ptr = -EFAULT; - - return sum; -} - -/* - * This is a version of ip_compute_csum() optimized for IP headers, - * which always checksum on 4 octet boundaries. - */ -__sum16 ip_fast_csum(const void *iph, unsigned int ihl) -{ - pr_debug("ip_fast_csum %p,%d\n", iph, ihl); - - return (__force __sum16)~do_csum(iph, ihl * 4); -} - -__wsum csum_tcpudp_nofold(__be32 saddr, __be32 daddr, - unsigned short len, - unsigned short proto, __wsum sum) -{ - unsigned long long result; - - pr_debug("ntohs(0x%x)=0x%x\n", 0xdead, ntohs(0xdead)); - pr_debug("htons(0x%x)=0x%x\n", 0xdead, htons(0xdead)); - - result = (__force u64) saddr + (__force u64) daddr + - (__force u64) sum + ((len + proto) << 8); - - /* Fold down to 32-bits so we don't lose in the typedef-less - network stack. */ - /* 64 to 33 */ - result = (result & 0xffffffff) + (result >> 32); - /* 33 to 32 */ - result = (result & 0xffffffff) + (result >> 32); - - pr_debug("%s saddr %x daddr %x len %x proto %x sum %x result %08Lx\n", - __func__, saddr, daddr, len, proto, sum, result); - - return (__wsum)result; -} -EXPORT_SYMBOL(csum_tcpudp_nofold); diff --git a/arch/sh/lib64/dbg.c b/arch/sh/lib64/dbg.c index 2fb8eaf6de6..6152a6a6d9c 100644 --- a/arch/sh/lib64/dbg.c +++ b/arch/sh/lib64/dbg.c @@ -135,140 +135,6 @@ void print_itlb(void) (" =============================================================\n"); } -/* ======================================================================= */ - -#ifdef CONFIG_POOR_MANS_STRACE - -#include "syscalltab.h" - -struct ring_node { - int evt; - int ret_addr; - int event; - int tra; - int pid; - unsigned long sp; - unsigned long pc; -}; - -static struct ring_node event_ring[16]; -static int event_ptr = 0; - -struct stored_syscall_data { - int pid; - int syscall_number; -}; - -#define N_STORED_SYSCALLS 16 - -static struct stored_syscall_data stored_syscalls[N_STORED_SYSCALLS]; -static int syscall_next=0; -static int syscall_next_print=0; - -void evt_debug(int evt, int ret_addr, int event, int tra, struct pt_regs *regs) -{ - int syscallno = tra & 0xff; - unsigned long sp; - unsigned long stack_bottom; - int pid; - struct ring_node *rr; - - pid = current->pid; - stack_bottom = (unsigned long) task_stack_page(current); - asm volatile("ori r15, 0, %0" : "=r" (sp)); - rr = event_ring + event_ptr; - rr->evt = evt; - rr->ret_addr = ret_addr; - rr->event = event; - rr->tra = tra; - rr->pid = pid; - rr->sp = sp; - rr->pc = regs->pc; - - if (sp < stack_bottom + 3092) { - int i, j; - printk("evt_debug : stack underflow report\n"); - for (j=0, i = event_ptr; j<16; j++) { - rr = event_ring + i; - printk("evt=%08x event=%08x tra=%08x pid=%5d sp=%08lx pc=%08lx\n", - rr->evt, rr->event, rr->tra, rr->pid, rr->sp, rr->pc); - i--; - i &= 15; - } - panic("STACK UNDERFLOW\n"); - } - - event_ptr = (event_ptr + 1) & 15; - - if ((event == 2) && (evt == 0x160)) { - if (syscallno < NUM_SYSCALL_INFO_ENTRIES) { - /* Store the syscall information to print later. We - * can't print this now - currently we're running with - * SR.BL=1, so we can't take a tlbmiss (which could occur - * in the console drivers under printk). - * - * Just overwrite old entries on ring overflow - this - * is only for last-hope debugging. */ - stored_syscalls[syscall_next].pid = current->pid; - stored_syscalls[syscall_next].syscall_number = syscallno; - syscall_next++; - syscall_next &= (N_STORED_SYSCALLS - 1); - } - } -} - -static void drain_syscalls(void) { - while (syscall_next_print != syscall_next) { - printk("Task %d: %s()\n", - stored_syscalls[syscall_next_print].pid, - syscall_info_table[stored_syscalls[syscall_next_print].syscall_number].name); - syscall_next_print++; - syscall_next_print &= (N_STORED_SYSCALLS - 1); - } -} - -void evt_debug2(unsigned int ret) -{ - drain_syscalls(); - printk("Task %d: syscall returns %08x\n", current->pid, ret); -} - -void evt_debug_ret_from_irq(struct pt_regs *regs) -{ - int pid; - struct ring_node *rr; - - pid = current->pid; - rr = event_ring + event_ptr; - rr->evt = 0xffff; - rr->ret_addr = 0; - rr->event = 0; - rr->tra = 0; - rr->pid = pid; - rr->pc = regs->pc; - event_ptr = (event_ptr + 1) & 15; -} - -void evt_debug_ret_from_exc(struct pt_regs *regs) -{ - int pid; - struct ring_node *rr; - - pid = current->pid; - rr = event_ring + event_ptr; - rr->evt = 0xfffe; - rr->ret_addr = 0; - rr->event = 0; - rr->tra = 0; - rr->pid = pid; - rr->pc = regs->pc; - event_ptr = (event_ptr + 1) & 15; -} - -#endif /* CONFIG_POOR_MANS_STRACE */ - -/* ======================================================================= */ - void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs) { @@ -380,51 +246,3 @@ void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs) print_dtlb(); print_itlb(); } - -/* ======================================================================= */ - -/* -** Depending on <base> scan the MMU, Data or Instruction side -** looking for a valid mapping matching Eaddr & asid. -** Return -1 if not found or the TLB id entry otherwise. -** Note: it works only for 4k pages! -*/ -static unsigned long -lookup_mmu_side(unsigned long base, unsigned long Eaddr, unsigned long asid) -{ - regType_t pteH; - unsigned long epn; - int count; - - epn = Eaddr & 0xfffff000; - - for (count = 0; count < MAX_TLBs; count++, base += TLB_STEP) { - pteH = getConfigReg(base); - if (GET_VALID(pteH)) - if ((unsigned long) GET_EPN(pteH) == epn) - if ((unsigned long) GET_ASID(pteH) == asid) - break; - } - return ((unsigned long) ((count < MAX_TLBs) ? base : -1)); -} - -unsigned long lookup_dtlb(unsigned long Eaddr) -{ - unsigned long asid = get_asid(); - return (lookup_mmu_side((u64) DTLB_BASE, Eaddr, asid)); -} - -unsigned long lookup_itlb(unsigned long Eaddr) -{ - unsigned long asid = get_asid(); - return (lookup_mmu_side((u64) ITLB_BASE, Eaddr, asid)); -} - -void print_page(struct page *page) -{ - printk(" page[%p] -> index 0x%lx, count 0x%x, flags 0x%lx\n", - page, page->index, page_count(page), page->flags); - printk(" address_space = %p, pages =%ld\n", page->mapping, - page->mapping->nrpages); - -} diff --git a/arch/sh/lib64/panic.c b/arch/sh/lib64/panic.c index da32ba7b5fc..38c954e04f6 100644 --- a/arch/sh/lib64/panic.c +++ b/arch/sh/lib64/panic.c @@ -6,53 +6,10 @@ * for more details. */ -#include <linux/kernel.h> -#include <asm/io.h> -#include <cpu/registers.h> - -/* THIS IS A PHYSICAL ADDRESS */ -#define HDSP2534_ADDR (0x04002100) - -#ifdef CONFIG_SH_CAYMAN - -static void poor_mans_delay(void) -{ - int i; - for (i = 0; i < 2500000; i++) { - } /* poor man's delay */ -} - -static void show_value(unsigned long x) -{ - int i; - unsigned nibble; - for (i = 0; i < 8; i++) { - nibble = ((x >> (i * 4)) & 0xf); - - ctrl_outb(nibble + ((nibble > 9) ? 55 : 48), - HDSP2534_ADDR + 0xe0 + ((7 - i) << 2)); - } -} - -#endif - void panic_handler(unsigned long panicPC, unsigned long panicSSR, unsigned long panicEXPEVT) { -#ifdef CONFIG_SH_CAYMAN - while (1) { - /* This piece of code displays the PC on the LED display */ - show_value(panicPC); - poor_mans_delay(); - show_value(panicSSR); - poor_mans_delay(); - show_value(panicEXPEVT); - poor_mans_delay(); - } -#endif - /* Never return from the panic handler */ for (;;) ; - } diff --git a/arch/sh/lib64/sdivsi3.S b/arch/sh/lib64/sdivsi3.S index 6a800c6a490..1963bbd4228 100644 --- a/arch/sh/lib64/sdivsi3.S +++ b/arch/sh/lib64/sdivsi3.S @@ -1,4 +1,6 @@ .global __sdivsi3 + .global __sdivsi3_1 + .global __sdivsi3_2 .section .text..SHmedia32,"ax" .align 2 @@ -6,13 +8,15 @@ /* clobbered: r1,r18,r19,r20,r21,r25,tr0 */ /* result in r0 */ __sdivsi3: +__sdivsi3_1: ptb __div_table,tr0 + gettr tr0,r20 +__sdivsi3_2: nsb r5, r1 shlld r5, r1, r25 /* normalize; [-2 ..1, 1..2) in s2.62 */ shari r25, 58, r21 /* extract 5(6) bit index (s2.4 with hole -1..1) */ /* bubble */ - gettr tr0,r20 ldx.ub r20, r21, r19 /* u0.8 */ shari r25, 32, r25 /* normalize to s2.30 */ shlli r21, 1, r21 diff --git a/arch/sh/lib64/udelay.c b/arch/sh/lib64/udelay.c index d76bd801194..f215b063da7 100644 --- a/arch/sh/lib64/udelay.c +++ b/arch/sh/lib64/udelay.c @@ -33,7 +33,7 @@ void __delay(unsigned long loops) :"0"(loops)); } -inline void __const_udelay(unsigned long xloops) +void __const_udelay(unsigned long xloops) { __delay(xloops * (HZ * cpu_data[raw_smp_processor_id()].loops_per_jiffy)); } |