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Avoid garbage on stdout for first print #93

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Nov 19, 2024
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Avoid garbage on stdout for first print #93

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8 changes: 6 additions & 2 deletions libsel4platsupport/src/common.c
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Original file line number Diff line number Diff line change
Expand Up @@ -268,8 +268,12 @@ static void __serial_setup()
case NOT_INITIALIZED:
#ifdef CONFIG_LIB_SEL4_PLAT_SUPPORT_USE_SEL4_DEBUG_PUTCHAR
setup_status = SETUP_COMPLETE;
printf("\nWarning: using printf before serial is set up. This only works as your\n");
printf("printf is backed by seL4_Debug_PutChar()\n");
/*
* Don't call any stdio functions here, it will cause unexpected recursion
* that will mess up the internal file buffer!
*/
seL4_DebugPutString("\nWarning: using printf before serial is set up. This only works as your\n"
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"printf is backed by seL4_Debug_PutChar()\n");
started_regular = 1;
#else
/* attempt failsafe initialization and print something out */
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