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Add new codegen memory allocator. This allows the recompiler to allocate memory from a central pool as required. This central pool is by default 64 MB on x86, x86-64 and ARMv8, and 32 MB on ARMv7.

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The current design does not allow for ARMv8 literal pools, therefore these have been removed.
This commit is contained in:
SarahW 2019-01-12 15:15:43 +00:00
commit 66fba50e06
26 changed files with 1339 additions and 667 deletions
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32
src/codegen_backend.c
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@ -11,10 +11,13 @@
#include "codegen.h"
#include "codegen_accumulate.h"
#include "codegen_allocator.h"
#include "codegen_backend.h"
#include "codegen_ir.h"
#include "codegen_reg.h"
uint8_t *block_write_data = NULL;
int codegen_flat_ds, codegen_flat_ss;
int mmx_ebx_ecx_loaded;
int codegen_flags_changed = 0;
@ -52,6 +55,7 @@ uint32_t instr_counts[256*256];
void codegen_init()
{
codegen_allocator_init();
codegen_backend_init();
#ifdef DEBUG_EXTRA
memset(instr_counts, 0, sizeof(instr_counts));
@ -96,10 +100,7 @@ void codegen_reset()
mem_reset_page_blocks();
for (c = 0; c < BLOCK_SIZE; c++)
{
codeblock[c].pc = BLOCK_PC_INVALID;
codeblock[c].data = &codeblock_data[c * BLOCK_DATA_SIZE];
}
}
void dump_block()
@ -220,6 +221,28 @@ static void delete_block(codeblock_t *block)
codeblock_tree_delete(block);
remove_from_block_list(block, old_pc);
if (block->head_mem_block)
codegen_allocator_free(block->head_mem_block);
block->head_mem_block = NULL;
}
void codegen_delete_random_block()
{
while (1)
{
int block_nr = rand() & BLOCK_MASK;
if (block_nr && block_nr != block_current)
{
codeblock_t *block = &codeblock[block_nr];
if (block->pc != BLOCK_PC_INVALID && block->head_mem_block)
{
delete_block(block);
return;
}
}
}
}
void codegen_check_flush(page_t *page, uint64_t mask, uint32_t phys_addr)
@ -318,6 +341,9 @@ void codegen_block_start_recompile(codeblock_t *block)
if (block->pc != cs + cpu_state.pc || (block->flags & CODEBLOCK_WAS_RECOMPILED))
fatal("Recompile to used block!\n");
block->head_mem_block = codegen_allocator_allocate(NULL);
block->data = codeblock_allocator_get_ptr(block->head_mem_block);
block->status = cpu_cur_status;
cpu_block_end = 0;