view src/gpf/osl/os_mem_ir.c @ 291:a72feaed133a

PWT buzzer driver: conditionalize on TARGET_HAS_BUZZER Here we add a new target config preprocessor symbol TARGET_HAS_BUZZER, currently defined for c11x and c139; later we also expect to have it on for FC Venus, and in FC Magnetite we are going to turn it on for target dsample, just for the sake of completeness and philosophical correctness.
author Mychaela Falconia <falcon@freecalypso.org>
date Sat, 26 Mar 2022 19:31:18 +0000
parents 4e78acac3d88
children
line wrap: on
line source

/*
 * This C module is a reconstruction based on the disassembly of
 * os_mem.obj in frame_na7_db_ir.lib from the Leonardo package.
 */

/* set of included headers from COFF symtab: */
#include <stdio.h>
#include <string.h>
#include "nucleus.h"
#include "typedefs.h"
#include "os.h"
#include "gdi.h"
#include "os_types.h"
#include "os_glob.h"

extern T_OS_PART_GRP_TABLE_ENTRY PartGrpTable[];
extern T_OS_POOL_BORDER PoolBorder[];

GLOBAL LONG
os_is_valid_partition(T_VOID_STRUCT *Buffer)
{
	int i;

	for (i = 0; i <= MaxPoolGroups; i++) {
		if (PoolBorder[i].End == 0)
			return(OS_ERROR);
		if ((char *)Buffer < PoolBorder[i].Start)
			continue;
		if ((char *)Buffer >= PoolBorder[i].End)
			continue;
		return(OS_OK);
	}
	return(OS_ERROR);
}

GLOBAL LONG
os_PartitionCheck(ULONG *ptr)
{
	PM_HEADER *phdr;
	PM_PCB *pool;

	phdr = (PM_HEADER *)(ptr - PPM_OFFSET - 2);
	if (phdr->pm_next_available)
		return(OS_PARTITION_FREE);
	pool = phdr->pm_partition_pool;
	if (ptr[((pool->pm_partition_size - 4) >> 2) - PPM_OFFSET] ==
			GUARD_PATTERN)
		return(OS_OK);
	else
		return(OS_PARTITION_GUARD_PATTERN_DESTROYED);
}

GLOBAL LONG
os_DeallocatePartition(OS_HANDLE TaskHandle, T_VOID_STRUCT *Buffer)
{
	if (os_is_valid_partition(Buffer) != OS_OK)
		return(OS_ERROR);
	if (NU_Deallocate_Partition(Buffer) != NU_SUCCESS)
		return(OS_ERROR);
	return(OS_OK);
}

GLOBAL LONG
os_AllocatePartition(OS_HANDLE TaskHandle, T_VOID_STRUCT **Buffer, ULONG Size,
		     ULONG Suspend, OS_HANDLE GroupHandle)
{
	T_OS_PART_POOL *pool, *requested_pool;
	ULONG nu_suspend;
	STATUS sts;
	int ret;

	for (pool = PartGrpTable[GroupHandle].grp_head; pool;
	     pool = pool->next)
		if (Size <= pool->size)
			break;
	if (!pool)
		return(OS_ERROR);
	requested_pool = pool;
	ret = OS_OK;
	nu_suspend = NU_NO_SUSPEND;
try_alloc:
	sts = NU_Allocate_Partition(&pool->pcb, (VOID **) Buffer, nu_suspend);
	switch (sts) {
	case NU_SUCCESS:
		return(ret);
	case NU_TIMEOUT:
	case NU_INVALID_SUSPEND:
		*Buffer = 0;
		return(OS_TIMEOUT);
	case NU_NO_PARTITION:
		pool = pool->next;
		if (pool) {
			ret = OS_ALLOCATED_BIGGER;
			goto try_alloc;
		}
		pool = requested_pool;
		if (Suspend) {
			nu_suspend = Suspend;
			ret = OS_WAITED;
			goto try_alloc;
		}
		return(OS_TIMEOUT);
	default:
		*Buffer = 0;
		return(OS_ERROR);
	}
}