FreeCalypso > hg > freecalypso-tools

annotate target-utils/libbase/osmodelay.S @ 1011:6d9b10633f10 default tip

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etmsync Pirelli IMEI retrieval: fix poor use of printf() Bug reported by Vadim Yanitskiy <fixeria@osmocom.org>: the construct where a static-allocated string was passed to printf() without any format arguments causes newer compilers to report a security problem. Given that formatted output is not needed here, just fixed string output, change printf() to fputs(), and direct the error message to stderr while at it.
author Mychaela Falconia <falcon@freecalypso.org>
date Thu, 23 May 2024 17:29:57 +0000
parents e7502631a0f9
children
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1 /*
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2 * This assembly module provides a replica of OsmocomBB's bogo-millisecond
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3 * delay_ms() function. It is literally a copy of what OsmocomBB's delay_ms()
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4 * compiles to with their gcc version and their optimization settings, as seen
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5 * by doing arm-elf-objdump on their lib/delay.o.
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6 *
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7 * This hack is intended for those cases where we have to copy OsmocomBB's
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8 * black magic voodoo operations with no ability to understand what is actually
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9 * needed, such as SPCA552E initialization on the Pirelli DP-L10.
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10 */
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12 .text
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13 .code 32
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14 .globl osmo_delay_ms
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15 osmo_delay_ms:
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16 mov r3, #0
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17 sub sp, sp, #4
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18 str r3, [sp]
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19 ldr r3, =1300
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20 mul r3, r0, r3
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21 b 2f
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22 1: ldr r2, [sp]
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23 ldr r2, [sp]
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24 add r2, r2, #1
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25 str r2, [sp]
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26 2: ldr r2, [sp]
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27 cmp r2, r3
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28 bcc 1b
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29 add sp, sp, #4
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30 bx lr