tjh.dev / kernel
Linux kernel mirror (for testing) git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel os linux
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sh64: Kill off old exception debugging helpers.

There's not much here that we can't get at through alternate means (aside
from the TLB contents, but that doesn't belong here anyways). Most of
this information is already provided by the sh32 routines, which we'll
consolidate on next.

Signed-off-by: Paul Mundt <lethal@linux-sh.org>

Paul Mundt 37c9ee01 db218b3d

+1 -261
-12
arch/sh/kernel/traps_64.c
··· 32 32 #include <asm/pgtable.h> 33 33 #include <asm/fpu.h> 34 34 35 - #undef DEBUG_EXCEPTION 36 - #ifdef DEBUG_EXCEPTION 37 - /* implemented in ../lib/dbg.c */ 38 - extern void show_excp_regs(char *fname, int trapnr, int signr, 39 - struct pt_regs *regs); 40 - #else 41 - #define show_excp_regs(a, b, c, d) 42 - #endif 43 - 44 35 static void do_unhandled_exception(int trapnr, int signr, char *str, char *fn_name, 45 36 unsigned long error_code, struct pt_regs *regs, struct task_struct *tsk); 46 37 ··· 230 239 /* Called with interrupts disabled */ 231 240 asmlinkage void do_exception_error(unsigned long ex, struct pt_regs *regs) 232 241 { 233 - show_excp_regs(__func__, -1, -1, regs); 234 242 die_if_kernel("exception", regs, ex); 235 243 } 236 244 ··· 246 256 static void do_unhandled_exception(int trapnr, int signr, char *str, char *fn_name, 247 257 unsigned long error_code, struct pt_regs *regs, struct task_struct *tsk) 248 258 { 249 - show_excp_regs(fn_name, trapnr, signr, regs); 250 - 251 259 if (user_mode(regs)) 252 260 force_sig(signr, tsk); 253 261
+1 -1
arch/sh/lib64/Makefile
··· 10 10 # 11 11 12 12 # Panic should really be compiled as PIC 13 - lib-y := udelay.o dbg.o panic.o memcpy.o memset.o \ 13 + lib-y := udelay.o panic.o memcpy.o memset.o \ 14 14 copy_user_memcpy.o copy_page.o strcpy.o strlen.o 15 15 16 16 # Extracted from libgcc
-248
arch/sh/lib64/dbg.c
··· 1 - /*-------------------------------------------------------------------------- 2 - -- 3 - -- Identity : Linux50 Debug Funcions 4 - -- 5 - -- File : arch/sh/lib64/dbg.c 6 - -- 7 - -- Copyright 2000, 2001 STMicroelectronics Limited. 8 - -- Copyright 2004 Richard Curnow (evt_debug etc) 9 - -- 10 - --------------------------------------------------------------------------*/ 11 - #include <linux/types.h> 12 - #include <linux/kernel.h> 13 - #include <linux/sched.h> 14 - #include <linux/mm.h> 15 - #include <linux/fs.h> 16 - #include <asm/mmu_context.h> 17 - 18 - typedef u64 regType_t; 19 - 20 - static regType_t getConfigReg(u64 id) 21 - { 22 - register u64 reg __asm__("r2"); 23 - asm volatile ("getcfg %1, 0, %0":"=r" (reg):"r"(id)); 24 - return (reg); 25 - } 26 - 27 - /* ======================================================================= */ 28 - 29 - static char *szTab[] = { "4k", "64k", "1M", "512M" }; 30 - static char *protTab[] = { "----", 31 - "---R", 32 - "--X-", 33 - "--XR", 34 - "-W--", 35 - "-W-R", 36 - "-WX-", 37 - "-WXR", 38 - "U---", 39 - "U--R", 40 - "U-X-", 41 - "U-XR", 42 - "UW--", 43 - "UW-R", 44 - "UWX-", 45 - "UWXR" 46 - }; 47 - #define ITLB_BASE 0x00000000 48 - #define DTLB_BASE 0x00800000 49 - #define MAX_TLBs 64 50 - /* PTE High */ 51 - #define GET_VALID(pte) ((pte) & 0x1) 52 - #define GET_SHARED(pte) ((pte) & 0x2) 53 - #define GET_ASID(pte) ((pte >> 2) & 0x0ff) 54 - #define GET_EPN(pte) ((pte) & 0xfffff000) 55 - 56 - /* PTE Low */ 57 - #define GET_CBEHAVIOR(pte) ((pte) & 0x3) 58 - #define GET_PAGE_SIZE(pte) szTab[((pte >> 3) & 0x3)] 59 - #define GET_PROTECTION(pte) protTab[((pte >> 6) & 0xf)] 60 - #define GET_PPN(pte) ((pte) & 0xfffff000) 61 - 62 - #define PAGE_1K_MASK 0x00000000 63 - #define PAGE_4K_MASK 0x00000010 64 - #define PAGE_64K_MASK 0x00000080 65 - #define MMU_PAGESIZE_MASK (PAGE_64K_MASK | PAGE_4K_MASK) 66 - #define PAGE_1MB_MASK MMU_PAGESIZE_MASK 67 - #define PAGE_1K (1024) 68 - #define PAGE_4K (1024 * 4) 69 - #define PAGE_64K (1024 * 64) 70 - #define PAGE_1MB (1024 * 1024) 71 - 72 - #define HOW_TO_READ_TLB_CONTENT \ 73 - "[ ID] PPN EPN ASID Share CB P.Size PROT.\n" 74 - 75 - void print_single_tlb(unsigned long tlb, int single_print) 76 - { 77 - regType_t pteH; 78 - regType_t pteL; 79 - unsigned int valid, shared, asid, epn, cb, ppn; 80 - char *pSize; 81 - char *pProt; 82 - 83 - /* 84 - ** in case of single print <single_print> is true, this implies: 85 - ** 1) print the TLB in any case also if NOT VALID 86 - ** 2) print out the header 87 - */ 88 - 89 - pteH = getConfigReg(tlb); 90 - valid = GET_VALID(pteH); 91 - if (single_print) 92 - printk(HOW_TO_READ_TLB_CONTENT); 93 - else if (!valid) 94 - return; 95 - 96 - pteL = getConfigReg(tlb + 1); 97 - 98 - shared = GET_SHARED(pteH); 99 - asid = GET_ASID(pteH); 100 - epn = GET_EPN(pteH); 101 - cb = GET_CBEHAVIOR(pteL); 102 - pSize = GET_PAGE_SIZE(pteL); 103 - pProt = GET_PROTECTION(pteL); 104 - ppn = GET_PPN(pteL); 105 - printk("[%c%2ld] 0x%08x 0x%08x %03d %02x %02x %4s %s\n", 106 - ((valid) ? ' ' : 'u'), ((tlb & 0x0ffff) / TLB_STEP), 107 - ppn, epn, asid, shared, cb, pSize, pProt); 108 - } 109 - 110 - void print_dtlb(void) 111 - { 112 - int count; 113 - unsigned long tlb; 114 - 115 - printk(" ================= SH-5 D-TLBs Status ===================\n"); 116 - printk(HOW_TO_READ_TLB_CONTENT); 117 - tlb = DTLB_BASE; 118 - for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP) 119 - print_single_tlb(tlb, 0); 120 - printk 121 - (" =============================================================\n"); 122 - } 123 - 124 - void print_itlb(void) 125 - { 126 - int count; 127 - unsigned long tlb; 128 - 129 - printk(" ================= SH-5 I-TLBs Status ===================\n"); 130 - printk(HOW_TO_READ_TLB_CONTENT); 131 - tlb = ITLB_BASE; 132 - for (count = 0; count < MAX_TLBs; count++, tlb += TLB_STEP) 133 - print_single_tlb(tlb, 0); 134 - printk 135 - (" =============================================================\n"); 136 - } 137 - 138 - void show_excp_regs(char *from, int trapnr, int signr, struct pt_regs *regs) 139 - { 140 - 141 - unsigned long long ah, al, bh, bl, ch, cl; 142 - 143 - printk("\n"); 144 - printk("EXCEPTION - %s: task %d; Linux trap # %d; signal = %d\n", 145 - ((from) ? from : "???"), current->pid, trapnr, signr); 146 - 147 - asm volatile ("getcon " __EXPEVT ", %0":"=r"(ah)); 148 - asm volatile ("getcon " __EXPEVT ", %0":"=r"(al)); 149 - ah = (ah) >> 32; 150 - al = (al) & 0xffffffff; 151 - asm volatile ("getcon " __KCR1 ", %0":"=r"(bh)); 152 - asm volatile ("getcon " __KCR1 ", %0":"=r"(bl)); 153 - bh = (bh) >> 32; 154 - bl = (bl) & 0xffffffff; 155 - asm volatile ("getcon " __INTEVT ", %0":"=r"(ch)); 156 - asm volatile ("getcon " __INTEVT ", %0":"=r"(cl)); 157 - ch = (ch) >> 32; 158 - cl = (cl) & 0xffffffff; 159 - printk("EXPE: %08Lx%08Lx KCR1: %08Lx%08Lx INTE: %08Lx%08Lx\n", 160 - ah, al, bh, bl, ch, cl); 161 - 162 - asm volatile ("getcon " __PEXPEVT ", %0":"=r"(ah)); 163 - asm volatile ("getcon " __PEXPEVT ", %0":"=r"(al)); 164 - ah = (ah) >> 32; 165 - al = (al) & 0xffffffff; 166 - asm volatile ("getcon " __PSPC ", %0":"=r"(bh)); 167 - asm volatile ("getcon " __PSPC ", %0":"=r"(bl)); 168 - bh = (bh) >> 32; 169 - bl = (bl) & 0xffffffff; 170 - asm volatile ("getcon " __PSSR ", %0":"=r"(ch)); 171 - asm volatile ("getcon " __PSSR ", %0":"=r"(cl)); 172 - ch = (ch) >> 32; 173 - cl = (cl) & 0xffffffff; 174 - printk("PEXP: %08Lx%08Lx PSPC: %08Lx%08Lx PSSR: %08Lx%08Lx\n", 175 - ah, al, bh, bl, ch, cl); 176 - 177 - ah = (regs->pc) >> 32; 178 - al = (regs->pc) & 0xffffffff; 179 - bh = (regs->regs[18]) >> 32; 180 - bl = (regs->regs[18]) & 0xffffffff; 181 - ch = (regs->regs[15]) >> 32; 182 - cl = (regs->regs[15]) & 0xffffffff; 183 - printk("PC : %08Lx%08Lx LINK: %08Lx%08Lx SP : %08Lx%08Lx\n", 184 - ah, al, bh, bl, ch, cl); 185 - 186 - ah = (regs->sr) >> 32; 187 - al = (regs->sr) & 0xffffffff; 188 - asm volatile ("getcon " __TEA ", %0":"=r"(bh)); 189 - asm volatile ("getcon " __TEA ", %0":"=r"(bl)); 190 - bh = (bh) >> 32; 191 - bl = (bl) & 0xffffffff; 192 - asm volatile ("getcon " __KCR0 ", %0":"=r"(ch)); 193 - asm volatile ("getcon " __KCR0 ", %0":"=r"(cl)); 194 - ch = (ch) >> 32; 195 - cl = (cl) & 0xffffffff; 196 - printk("SR : %08Lx%08Lx TEA : %08Lx%08Lx KCR0: %08Lx%08Lx\n", 197 - ah, al, bh, bl, ch, cl); 198 - 199 - ah = (regs->regs[0]) >> 32; 200 - al = (regs->regs[0]) & 0xffffffff; 201 - bh = (regs->regs[1]) >> 32; 202 - bl = (regs->regs[1]) & 0xffffffff; 203 - ch = (regs->regs[2]) >> 32; 204 - cl = (regs->regs[2]) & 0xffffffff; 205 - printk("R0 : %08Lx%08Lx R1 : %08Lx%08Lx R2 : %08Lx%08Lx\n", 206 - ah, al, bh, bl, ch, cl); 207 - 208 - ah = (regs->regs[3]) >> 32; 209 - al = (regs->regs[3]) & 0xffffffff; 210 - bh = (regs->regs[4]) >> 32; 211 - bl = (regs->regs[4]) & 0xffffffff; 212 - ch = (regs->regs[5]) >> 32; 213 - cl = (regs->regs[5]) & 0xffffffff; 214 - printk("R3 : %08Lx%08Lx R4 : %08Lx%08Lx R5 : %08Lx%08Lx\n", 215 - ah, al, bh, bl, ch, cl); 216 - 217 - ah = (regs->regs[6]) >> 32; 218 - al = (regs->regs[6]) & 0xffffffff; 219 - bh = (regs->regs[7]) >> 32; 220 - bl = (regs->regs[7]) & 0xffffffff; 221 - ch = (regs->regs[8]) >> 32; 222 - cl = (regs->regs[8]) & 0xffffffff; 223 - printk("R6 : %08Lx%08Lx R7 : %08Lx%08Lx R8 : %08Lx%08Lx\n", 224 - ah, al, bh, bl, ch, cl); 225 - 226 - ah = (regs->regs[9]) >> 32; 227 - al = (regs->regs[9]) & 0xffffffff; 228 - bh = (regs->regs[10]) >> 32; 229 - bl = (regs->regs[10]) & 0xffffffff; 230 - ch = (regs->regs[11]) >> 32; 231 - cl = (regs->regs[11]) & 0xffffffff; 232 - printk("R9 : %08Lx%08Lx R10 : %08Lx%08Lx R11 : %08Lx%08Lx\n", 233 - ah, al, bh, bl, ch, cl); 234 - printk("....\n"); 235 - 236 - ah = (regs->tregs[0]) >> 32; 237 - al = (regs->tregs[0]) & 0xffffffff; 238 - bh = (regs->tregs[1]) >> 32; 239 - bl = (regs->tregs[1]) & 0xffffffff; 240 - ch = (regs->tregs[2]) >> 32; 241 - cl = (regs->tregs[2]) & 0xffffffff; 242 - printk("T0 : %08Lx%08Lx T1 : %08Lx%08Lx T2 : %08Lx%08Lx\n", 243 - ah, al, bh, bl, ch, cl); 244 - printk("....\n"); 245 - 246 - print_dtlb(); 247 - print_itlb(); 248 - }