/[gxemul]/trunk/src/cpus/cpu_arm.c
This is repository of my old source code which isn't updated any more. Go to git.rot13.org for current projects!
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Diff of /trunk/src/cpus/cpu_arm.c

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revision 22 by dpavlin, Mon Oct 8 16:19:37 2007 UTC revision 24 by dpavlin, Mon Oct 8 16:19:56 2007 UTC
# Line 25  Line 25 
25   *  SUCH DAMAGE.   *  SUCH DAMAGE.
26   *   *
27   *   *
28   *  $Id: cpu_arm.c,v 1.54 2006/02/09 20:02:58 debug Exp $   *  $Id: cpu_arm.c,v 1.59 2006/06/16 18:31:25 debug Exp $
29   *   *
30   *  ARM CPU emulation.   *  ARM CPU emulation.
31   *   *
# Line 714  void arm_exception(struct cpu *cpu, int Line 714  void arm_exception(struct cpu *cpu, int
714    
715    
716  /*  /*
717     *  arm_cpu_tlbdump():
718     *
719     *  Called from the debugger to dump the TLB in a readable format.
720     *  x is the cpu number to dump, or -1 to dump all CPUs.
721     *
722     *  If rawflag is nonzero, then the TLB contents isn't formated nicely,
723     *  just dumped.
724     */
725    void arm_cpu_tlbdump(struct machine *m, int x, int rawflag)
726    {
727    }
728    
729    
730    static void add_response_word(struct cpu *cpu, char *r, uint32_t value,
731            size_t maxlen)
732    {
733            if (cpu->byte_order == EMUL_LITTLE_ENDIAN) {
734                    value = ((value & 0xff) << 24) +
735                            ((value & 0xff00) << 8) +
736                            ((value & 0xff0000) >> 8) +
737                            ((value & 0xff000000) >> 24);
738            }
739            snprintf(r + strlen(r), maxlen - strlen(r), "%08"PRIx32, value);
740    }
741    
742    
743    /*
744     *  arm_cpu_gdb_stub():
745     *
746     *  Execute a "remote GDB" command. Returns a newly allocated response string
747     *  on success, NULL on failure.
748     */
749    char *arm_cpu_gdb_stub(struct cpu *cpu, char *cmd)
750    {
751            if (strcmp(cmd, "g") == 0) {
752                    /*  15 gprs, pc, 8 fprs, fps, cpsr.  */
753                    int i;
754                    char *r;
755                    size_t len = 1 + 18 * sizeof(uint32_t);
756                    r = malloc(len);
757                    if (r == NULL) {
758                            fprintf(stderr, "out of memory\n");
759                            exit(1);
760                    }
761                    r[0] = '\0';
762                    for (i=0; i<15; i++)
763                            add_response_word(cpu, r, cpu->cd.arm.r[i], len);
764                    add_response_word(cpu, r, cpu->pc, len);
765                    /*  TODO: fprs:  */
766                    for (i=0; i<8; i++)
767                            add_response_word(cpu, r, 0, len);
768                    /*  TODO: fps  */
769                    add_response_word(cpu, r, 0, len);
770                    add_response_word(cpu, r, cpu->cd.arm.cpsr, len);
771                    return r;
772            }
773    
774            if (cmd[0] == 'p') {
775                    int regnr = strtol(cmd + 1, NULL, 16);
776                    size_t len = 2 * sizeof(uint32_t) + 1;
777                    char *r = malloc(len);
778                    r[0] = '\0';
779                    if (regnr == ARM_PC) {
780                            add_response_word(cpu, r, cpu->pc, len);
781                    } else if (regnr >= 0 && regnr < ARM_PC) {
782                            add_response_word(cpu, r, cpu->cd.arm.r[regnr], len);
783                    } else if (regnr >= 0x10 && regnr <= 0x17) {
784                            /*  TODO: fprs  */
785                            add_response_word(cpu, r, 0, len);
786                            add_response_word(cpu, r, 0, len);
787                            add_response_word(cpu, r, 0, len);
788                    } else if (regnr == 0x18) {
789                            /*  TODO: fps  */
790                            add_response_word(cpu, r, 0, len);
791                    } else if (regnr == 0x19) {
792                            add_response_word(cpu, r, cpu->cd.arm.cpsr, len);
793                    }
794                    return r;
795            }
796    
797            fatal("arm_cpu_gdb_stub(): TODO\n");
798            return NULL;
799    }
800    
801    
802    /*
803   *  arm_cpu_interrupt():   *  arm_cpu_interrupt():
804   *   *
805   *  0..31 are used as footbridge interrupt numbers, 32..47 = ISA,   *  0..31 are used as footbridge interrupt numbers, 32..47 = ISA,
# Line 771  int arm_cpu_interrupt_ack(struct cpu *cp Line 857  int arm_cpu_interrupt_ack(struct cpu *cp
857   *  cpu->pc for relative addresses.   *  cpu->pc for relative addresses.
858   */                       */                    
859  int arm_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib,  int arm_cpu_disassemble_instr(struct cpu *cpu, unsigned char *ib,
860          int running, uint64_t dumpaddr, int bintrans)          int running, uint64_t dumpaddr)
861  {  {
862          uint32_t iw, tmp;          uint32_t iw, tmp;
863          int main_opcode, secondary_opcode, s_bit, r16, r12, r8;          int main_opcode, secondary_opcode, s_bit, r16, r12, r8;
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