FreeCalypso > hg > freecalypso-tools

annotate target-utils/libcommon/cmd_jump.c @ 258:00805e7c4c45

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doc/High-speed-serial: update/rewrite for the new FTDI support
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 28 Sep 2017 07:53:50 +0000
parents e7502631a0f9
children
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1 /*
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2 * jump hexaddr -- transfer control with BX
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3 */
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4
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5 #include <sys/types.h>
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6 #include "types.h"
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7
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8 void
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9 cmd_jump(argbulk)
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10 char *argbulk;
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11 {
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12 char *argv[2];
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13 u_long addr;
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15 if (parse_args(argbulk, 1, 1, argv, 0) < 0)
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16 return;
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17 if (parse_hexarg(argv[0], 8, &addr) < 0) {
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18 printf("ERROR: argument must be a valid 32-bit hex address\n");
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19 return;
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20 }
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21 serial_flush();
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22 asm volatile ("bx %0" : : "r" (addr));
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23 __builtin_unreachable();
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24 }