FreeCalypso > hg > freecalypso-tools

annotate target-utils/loadagent/serextra.S @ 926:6a0aa8d36d06

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rvinterf backslash escape: introduce libprint The new helper function library named libprint is meant to replace the badly misnamed libg23, and will soon contain functions for printing all of the same kinds of GPF TST packets that are now handled in libg23. However, we are also moving safe_print_trace() from libasync to this new library, and changing it to emit our new backslash escape format.
author Mychaela Falconia <falcon@freecalypso.org>
date Tue, 23 May 2023 03:47:46 +0000
parents 3229940734e5
children
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3229940734e5 loadagent: binary memload command implemented
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1 #include "ns16550.h"
3229940734e5 loadagent: binary memload command implemented
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2
3229940734e5 loadagent: binary memload command implemented
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3 @ extra serial I/O functions for loadagent binary operations
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4
3229940734e5 loadagent: binary memload command implemented
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5 .text
3229940734e5 loadagent: binary memload command implemented
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6 .code 32
3229940734e5 loadagent: binary memload command implemented
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7 .globl serial_out_if_empty
3229940734e5 loadagent: binary memload command implemented
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8 serial_out_if_empty:
3229940734e5 loadagent: binary memload command implemented
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9 ldr r1, =uart_base
3229940734e5 loadagent: binary memload command implemented
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10 ldr r2, [r1]
3229940734e5 loadagent: binary memload command implemented
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11 ldrb r3, [r2, #NS16550_LSR]
3229940734e5 loadagent: binary memload command implemented
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12 tst r3, #NS16550_LSR_THRE
3229940734e5 loadagent: binary memload command implemented
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13 strneb r0, [r2, #NS16550_THR]
3229940734e5 loadagent: binary memload command implemented
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14 bx lr