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Add uc_ctl_get/set_tcg_buffer_size

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mio 2023-06-10 16:08:29 +02:00
parent 5057f9925b
commit 3145e3c426
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GPG Key ID: DFF27E34A47CB873
5 changed files with 28 additions and 3 deletions
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1
include/uc_priv.h
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@ -400,6 +400,7 @@ struct uc_struct {
FlatView *empty_view; // Static function variable moved from flatviews_init FlatView *empty_view; // Static function variable moved from flatviews_init
uint64_t tcg_buffer_size; // The buffer size we are going to use
#ifdef WIN32 #ifdef WIN32
PVOID seh_handle; PVOID seh_handle;
void* seh_closure; void* seh_closure;

13
include/unicorn/unicorn.h
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@ -571,8 +571,12 @@ typedef enum uc_control_type {
// Change the tlb implementation // Change the tlb implementation
// see uc_tlb_type for current implemented types // see uc_tlb_type for current implemented types
// Write: @args = (int) // Write: @args = (int)
UC_CTL_TLB_TYPE UC_CTL_TLB_TYPE,
// Change the tcg translation buffer size, note that
// unicorn may adjust this value.
// Write: @args = (uint64_t)
// Read: @args = (uint64_t*)
UC_CTL_TCG_BUFFER_SIZE,
} uc_control_type; } uc_control_type;
/* /*
@ -649,6 +653,11 @@ See sample_ctl.c for a detailed example.
#define uc_ctl_flush_tb(uc) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TB_FLUSH, 0)) #define uc_ctl_flush_tb(uc) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TB_FLUSH, 0))
#define uc_ctl_flush_tlb(uc) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TLB_FLUSH, 0)) #define uc_ctl_flush_tlb(uc) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TLB_FLUSH, 0))
#define uc_ctl_tlb_mode(uc, mode) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TLB_TYPE, 1), (mode)) #define uc_ctl_tlb_mode(uc, mode) uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TLB_TYPE, 1), (mode))
#define uc_ctl_get_tcg_buffer_size(uc, size) \
uc_ctl(uc, UC_CTL_READ(UC_CTL_TCG_BUFFER_SIZE, 1), (size))
#define uc_ctl_set_tcg_buffer_size(uc, size) \
uc_ctl(uc, UC_CTL_WRITE(UC_CTL_TCG_BUFFER_SIZE, 1), (size))
// Opaque storage for CPU context, used with uc_context_*() // Opaque storage for CPU context, used with uc_context_*()
struct uc_context; struct uc_context;
typedef struct uc_context uc_context; typedef struct uc_context uc_context;

1
qemu/accel/tcg/translate-all.c
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@ -1085,6 +1085,7 @@ static inline void code_gen_alloc(struct uc_struct *uc, size_t tb_size)
tcg_ctx->code_gen_buffer = alloc_code_gen_buffer(uc); tcg_ctx->code_gen_buffer = alloc_code_gen_buffer(uc);
tcg_ctx->initial_buffer = tcg_ctx->code_gen_buffer; tcg_ctx->initial_buffer = tcg_ctx->code_gen_buffer;
tcg_ctx->initial_buffer_size = tcg_ctx->code_gen_buffer_size; tcg_ctx->initial_buffer_size = tcg_ctx->code_gen_buffer_size;
uc->tcg_buffer_size = tcg_ctx->initial_buffer_size;
if (tcg_ctx->code_gen_buffer == NULL) { if (tcg_ctx->code_gen_buffer == NULL) {
fprintf(stderr, "Could not allocate dynamic translator buffer\n"); fprintf(stderr, "Could not allocate dynamic translator buffer\n");
exit(1); exit(1);

2
qemu/softmmu/vl.c
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@ -50,7 +50,7 @@ int machine_initialize(struct uc_struct *uc)
uc->target_page(uc); uc->target_page(uc);
/* Init tcg. use DEFAULT_CODE_GEN_BUFFER_SIZE. */ /* Init tcg. use DEFAULT_CODE_GEN_BUFFER_SIZE. */
uc->tcg_exec_init(uc, 0); uc->tcg_exec_init(uc, uc->tcg_buffer_size);
/* Init cpu. use default cpu_model. */ /* Init cpu. use default cpu_model. */
return uc->cpus_init(uc, NULL); return uc->cpus_init(uc, NULL);

14
uc.c
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@ -2374,6 +2374,20 @@ uc_err uc_ctl(uc_engine *uc, uc_control_type control, ...)
break; break;
} }
case UC_CTL_TCG_BUFFER_SIZE: {
if (rw == UC_CTL_IO_WRITE) {
uint64_t size = va_arg(args, uint64_t);
uc->tcg_buffer_size = size;
} else {
UC_INIT(uc);
uint64_t *size = va_arg(args, uint64_t *);
*size = uc->tcg_buffer_size;
}
break;
}
default: default:
err = UC_ERR_ARG; err = UC_ERR_ARG;
break; break;