--- /dev/null
+/*
+ * U-boot - architecture specific kgdb code
+ *
+ * Copyright 2009 Analog Devices Inc.
+ *
+ * Licensed under the GPL-2 or later.
+ */
+
+#include <common.h>
+#include <command.h>
+
+#include <kgdb.h>
+#include <asm/processor.h>
+#include <asm/mach-common/bits/core.h>
+#include "kgdb.h"
+#include <asm/deferred.h>
+#include <asm/traps.h>
+#include <asm/signal.h>
+
+void kgdb_enter(struct pt_regs *regs, kgdb_data *kdp)
+{
+ /* disable interrupts */
+ disable_interrupts();
+
+ /* reply to host that an exception has occurred */
+ kdp->sigval = kgdb_trap(regs);
+
+ /* send the PC and the Stack Pointer */
+ kdp->nregs = 2;
+ kdp->regs[0].num = BFIN_PC;
+ kdp->regs[0].val = regs->pc;
+
+ kdp->regs[1].num = BFIN_SP;
+ kdp->regs[1].val = (unsigned long)regs;
+
+}
+
+void kgdb_exit(struct pt_regs *regs, kgdb_data *kdp)
+{
+ if (kdp->extype & KGDBEXIT_WITHADDR)
+ printf("KGDBEXIT_WITHADDR\n");
+
+ switch (kdp->extype & KGDBEXIT_TYPEMASK) {
+ case KGDBEXIT_KILL:
+ printf("KGDBEXIT_KILL:\n");
+ break;
+ case KGDBEXIT_CONTINUE:
+ /* Make sure the supervisor single step bit is clear */
+ regs->syscfg &= ~1;
+ break;
+ case KGDBEXIT_SINGLE:
+ /* set the supervisor single step bit */
+ regs->syscfg |= 1;
+ break;
+ default:
+ printf("KGDBEXIT : %d\n", kdp->extype);
+ }
+
+ /* enable interrupts */
+ enable_interrupts();
+}
+
+int kgdb_trap(struct pt_regs *regs)
+{
+ /* ipend doesn't get filled in properly */
+ switch (regs->seqstat & EXCAUSE) {
+ case VEC_EXCPT01:
+ return SIGTRAP;
+ case VEC_EXCPT03:
+ return SIGSEGV;
+ case VEC_EXCPT02:
+ return SIGTRAP;
+ case VEC_EXCPT04 ... VEC_EXCPT15:
+ return SIGILL;
+ case VEC_STEP:
+ return SIGTRAP;
+ case VEC_OVFLOW:
+ return SIGTRAP;
+ case VEC_UNDEF_I:
+ return SIGILL;
+ case VEC_ILGAL_I:
+ return SIGILL;
+ case VEC_CPLB_VL:
+ return SIGSEGV;
+ case VEC_MISALI_D:
+ return SIGBUS;
+ case VEC_UNCOV:
+ return SIGILL;
+ case VEC_CPLB_MHIT:
+ return SIGSEGV;
+ case VEC_MISALI_I:
+ return SIGBUS;
+ case VEC_CPLB_I_VL:
+ return SIGBUS;
+ case VEC_CPLB_I_MHIT:
+ return SIGSEGV;
+ default:
+ return SIGBUS;
+ }
+}
+
+/*
+ * getregs - gets the pt_regs, and gives them to kgdb's buffer
+ */
+int kgdb_getregs(struct pt_regs *regs, char *buf, int max)
+{
+ unsigned long *gdb_regs = (unsigned long *)buf;
+
+ if (max < NUMREGBYTES)
+ kgdb_error(KGDBERR_NOSPACE);
+
+ if ((unsigned long)gdb_regs & 3)
+ kgdb_error(KGDBERR_ALIGNFAULT);
+
+ gdb_regs[BFIN_R0] = regs->r0;
+ gdb_regs[BFIN_R1] = regs->r1;
+ gdb_regs[BFIN_R2] = regs->r2;
+ gdb_regs[BFIN_R3] = regs->r3;
+ gdb_regs[BFIN_R4] = regs->r4;
+ gdb_regs[BFIN_R5] = regs->r5;
+ gdb_regs[BFIN_R6] = regs->r6;
+ gdb_regs[BFIN_R7] = regs->r7;
+ gdb_regs[BFIN_P0] = regs->p0;
+ gdb_regs[BFIN_P1] = regs->p1;
+ gdb_regs[BFIN_P2] = regs->p2;
+ gdb_regs[BFIN_P3] = regs->p3;
+ gdb_regs[BFIN_P4] = regs->p4;
+ gdb_regs[BFIN_P5] = regs->p5;
+ gdb_regs[BFIN_SP] = (unsigned long)regs;
+ gdb_regs[BFIN_FP] = regs->fp;
+ gdb_regs[BFIN_I0] = regs->i0;
+ gdb_regs[BFIN_I1] = regs->i1;
+ gdb_regs[BFIN_I2] = regs->i2;
+ gdb_regs[BFIN_I3] = regs->i3;
+ gdb_regs[BFIN_M0] = regs->m0;
+ gdb_regs[BFIN_M1] = regs->m1;
+ gdb_regs[BFIN_M2] = regs->m2;
+ gdb_regs[BFIN_M3] = regs->m3;
+ gdb_regs[BFIN_B0] = regs->b0;
+ gdb_regs[BFIN_B1] = regs->b1;
+ gdb_regs[BFIN_B2] = regs->b2;
+ gdb_regs[BFIN_B3] = regs->b3;
+ gdb_regs[BFIN_L0] = regs->l0;
+ gdb_regs[BFIN_L1] = regs->l1;
+ gdb_regs[BFIN_L2] = regs->l2;
+ gdb_regs[BFIN_L3] = regs->l3;
+ gdb_regs[BFIN_A0_DOT_X] = regs->a0x;
+ gdb_regs[BFIN_A0_DOT_W] = regs->a0w;
+ gdb_regs[BFIN_A1_DOT_X] = regs->a1x;
+ gdb_regs[BFIN_A1_DOT_W] = regs->a1w;
+ gdb_regs[BFIN_ASTAT] = regs->astat;
+ gdb_regs[BFIN_RETS] = regs->rets;
+ gdb_regs[BFIN_LC0] = regs->lc0;
+ gdb_regs[BFIN_LT0] = regs->lt0;
+ gdb_regs[BFIN_LB0] = regs->lb0;
+ gdb_regs[BFIN_LC1] = regs->lc1;
+ gdb_regs[BFIN_LT1] = regs->lt1;
+ gdb_regs[BFIN_LB1] = regs->lb1;
+ gdb_regs[BFIN_CYCLES] = 0;
+ gdb_regs[BFIN_CYCLES2] = 0;
+ gdb_regs[BFIN_USP] = regs->usp;
+ gdb_regs[BFIN_SEQSTAT] = regs->seqstat;
+ gdb_regs[BFIN_SYSCFG] = regs->syscfg;
+ gdb_regs[BFIN_RETI] = regs->pc;
+ gdb_regs[BFIN_RETX] = regs->retx;
+ gdb_regs[BFIN_RETN] = regs->retn;
+ gdb_regs[BFIN_RETE] = regs->rete;
+ gdb_regs[BFIN_PC] = regs->pc;
+ gdb_regs[BFIN_CC] = 0;
+ gdb_regs[BFIN_EXTRA1] = 0;
+ gdb_regs[BFIN_EXTRA2] = 0;
+ gdb_regs[BFIN_EXTRA3] = 0;
+ gdb_regs[BFIN_IPEND] = regs->ipend;
+
+ return NUMREGBYTES;
+}
+
+/*
+ * putreg - put kgdb's reg (regno) into the pt_regs
+ */
+void kgdb_putreg(struct pt_regs *regs, int regno, char *buf, int length)
+{
+ unsigned long *ptr = (unsigned long *)buf;
+
+ if (regno < 0 || regno > BFIN_NUM_REGS)
+ kgdb_error(KGDBERR_BADPARAMS);
+
+ if (length < 4)
+ kgdb_error(KGDBERR_NOSPACE);
+
+ if ((unsigned long)ptr & 3)
+ kgdb_error(KGDBERR_ALIGNFAULT);
+
+ switch (regno) {
+ case BFIN_R0:
+ regs->r0 = *ptr;
+ break;
+ case BFIN_R1:
+ regs->r1 = *ptr;
+ break;
+ case BFIN_R2:
+ regs->r2 = *ptr;
+ break;
+ case BFIN_R3:
+ regs->r3 = *ptr;
+ break;
+ case BFIN_R4:
+ regs->r4 = *ptr;
+ break;
+ case BFIN_R5:
+ regs->r5 = *ptr;
+ break;
+ case BFIN_R6:
+ regs->r6 = *ptr;
+ break;
+ case BFIN_R7:
+ regs->r7 = *ptr;
+ break;
+ case BFIN_P0:
+ regs->p0 = *ptr;
+ break;
+ case BFIN_P1:
+ regs->p1 = *ptr;
+ break;
+ case BFIN_P2:
+ regs->p2 = *ptr;
+ break;
+ case BFIN_P3:
+ regs->p3 = *ptr;
+ break;
+ case BFIN_P4:
+ regs->p4 = *ptr;
+ break;
+ case BFIN_P5:
+ regs->p5 = *ptr;
+ break;
+ case BFIN_SP:
+ regs->reserved = *ptr;
+ break;
+ case BFIN_FP:
+ regs->fp = *ptr;
+ break;
+ case BFIN_I0:
+ regs->i0 = *ptr;
+ break;
+ case BFIN_I1:
+ regs->i1 = *ptr;
+ break;
+ case BFIN_I2:
+ regs->i2 = *ptr;
+ break;
+ case BFIN_I3:
+ regs->i3 = *ptr;
+ break;
+ case BFIN_M0:
+ regs->m0 = *ptr;
+ break;
+ case BFIN_M1:
+ regs->m1 = *ptr;
+ break;
+ case BFIN_M2:
+ regs->m2 = *ptr;
+ break;
+ case BFIN_M3:
+ regs->m3 = *ptr;
+ break;
+ case BFIN_B0:
+ regs->b0 = *ptr;
+ break;
+ case BFIN_B1:
+ regs->b1 = *ptr;
+ break;
+ case BFIN_B2:
+ regs->b2 = *ptr;
+ break;
+ case BFIN_B3:
+ regs->b3 = *ptr;
+ break;
+ case BFIN_L0:
+ regs->l0 = *ptr;
+ break;
+ case BFIN_L1:
+ regs->l1 = *ptr;
+ break;
+ case BFIN_L2:
+ regs->l2 = *ptr;
+ break;
+ case BFIN_L3:
+ regs->l3 = *ptr;
+ break;
+ case BFIN_A0_DOT_X:
+ regs->a0x = *ptr;
+ break;
+ case BFIN_A0_DOT_W:
+ regs->a0w = *ptr;
+ break;
+ case BFIN_A1_DOT_X:
+ regs->a1x = *ptr;
+ break;
+ case BFIN_A1_DOT_W:
+ regs->a1w = *ptr;
+ break;
+ case BFIN_ASTAT:
+ regs->astat = *ptr;
+ break;
+ case BFIN_RETS:
+ regs->rets = *ptr;
+ break;
+ case BFIN_LC0:
+ regs->lc0 = *ptr;
+ break;
+ case BFIN_LT0:
+ regs->lt0 = *ptr;
+ break;
+ case BFIN_LB0:
+ regs->lb0 = *ptr;
+ break;
+ case BFIN_LC1:
+ regs->lc1 = *ptr;
+ break;
+ case BFIN_LT1:
+ regs->lt1 = *ptr;
+ break;
+ case BFIN_LB1:
+ regs->lb1 = *ptr;
+ break;
+/*
+ BFIN_CYCLES,
+ BFIN_CYCLES2,
+ BFIN_USP,
+ BFIN_SEQSTAT,
+ BFIN_SYSCFG,
+*/
+ case BFIN_RETX:
+ regs->retx = *ptr;
+ break;
+ case BFIN_RETN:
+ regs->retn = *ptr;
+ break;
+ case BFIN_RETE:
+ regs->rete = *ptr;
+ break;
+ case BFIN_PC:
+ regs->pc = *ptr;
+ break;
+
+ default:
+ kgdb_error(KGDBERR_BADPARAMS);
+ }
+}
+
+void kgdb_putregs(struct pt_regs *regs, char *buf, int length)
+{
+ unsigned long *gdb_regs = (unsigned long *)buf;
+
+ if (length != BFIN_NUM_REGS)
+ kgdb_error(KGDBERR_NOSPACE);
+
+ if ((unsigned long)gdb_regs & 3)
+ kgdb_error(KGDBERR_ALIGNFAULT);
+
+ regs->r0 = gdb_regs[BFIN_R0];
+ regs->r1 = gdb_regs[BFIN_R1];
+ regs->r2 = gdb_regs[BFIN_R2];
+ regs->r3 = gdb_regs[BFIN_R3];
+ regs->r4 = gdb_regs[BFIN_R4];
+ regs->r5 = gdb_regs[BFIN_R5];
+ regs->r6 = gdb_regs[BFIN_R6];
+ regs->r7 = gdb_regs[BFIN_R7];
+ regs->p0 = gdb_regs[BFIN_P0];
+ regs->p1 = gdb_regs[BFIN_P1];
+ regs->p2 = gdb_regs[BFIN_P2];
+ regs->p3 = gdb_regs[BFIN_P3];
+ regs->p4 = gdb_regs[BFIN_P4];
+ regs->p5 = gdb_regs[BFIN_P5];
+ regs->fp = gdb_regs[BFIN_FP];
+/* regs->sp = gdb_regs[BFIN_ ]; */
+ regs->i0 = gdb_regs[BFIN_I0];
+ regs->i1 = gdb_regs[BFIN_I1];
+ regs->i2 = gdb_regs[BFIN_I2];
+ regs->i3 = gdb_regs[BFIN_I3];
+ regs->m0 = gdb_regs[BFIN_M0];
+ regs->m1 = gdb_regs[BFIN_M1];
+ regs->m2 = gdb_regs[BFIN_M2];
+ regs->m3 = gdb_regs[BFIN_M3];
+ regs->b0 = gdb_regs[BFIN_B0];
+ regs->b1 = gdb_regs[BFIN_B1];
+ regs->b2 = gdb_regs[BFIN_B2];
+ regs->b3 = gdb_regs[BFIN_B3];
+ regs->l0 = gdb_regs[BFIN_L0];
+ regs->l1 = gdb_regs[BFIN_L1];
+ regs->l2 = gdb_regs[BFIN_L2];
+ regs->l3 = gdb_regs[BFIN_L3];
+ regs->a0x = gdb_regs[BFIN_A0_DOT_X];
+ regs->a0w = gdb_regs[BFIN_A0_DOT_W];
+ regs->a1x = gdb_regs[BFIN_A1_DOT_X];
+ regs->a1w = gdb_regs[BFIN_A1_DOT_W];
+ regs->rets = gdb_regs[BFIN_RETS];
+ regs->lc0 = gdb_regs[BFIN_LC0];
+ regs->lt0 = gdb_regs[BFIN_LT0];
+ regs->lb0 = gdb_regs[BFIN_LB0];
+ regs->lc1 = gdb_regs[BFIN_LC1];
+ regs->lt1 = gdb_regs[BFIN_LT1];
+ regs->lb1 = gdb_regs[BFIN_LB1];
+ regs->usp = gdb_regs[BFIN_USP];
+ regs->syscfg = gdb_regs[BFIN_SYSCFG];
+ regs->retx = gdb_regs[BFIN_PC];
+ regs->retn = gdb_regs[BFIN_RETN];
+ regs->rete = gdb_regs[BFIN_RETE];
+ regs->pc = gdb_regs[BFIN_PC];
+
+#if 0 /* can't change these */
+ regs->astat = gdb_regs[BFIN_ASTAT];
+ regs->seqstat = gdb_regs[BFIN_SEQSTAT];
+ regs->ipend = gdb_regs[BFIN_IPEND];
+#endif
+
+}
+
+void kgdb_breakpoint(int argc, char * const argv[])
+{
+ asm volatile ("excpt 0x1\n");
+}
Code Review / kvmfornfv.git / blobdiff