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target: simplify register get/set ops

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No need to indirect from registered integers to pointers.
Just stash the pointers directly in the register struct,
and don't even bother registering.

This is a small code shrink, speeds register access just
a smidgeon, and gets rid of another rude exit() path.

Signed-off-by: David Brownell <dbrownell@users.sourceforge.net>
This commit is contained in:
David Brownell
2009-11-17 09:06:45 -08:00
parent 959b373f8c
commit f4788652e4
14 changed files with 62 additions and 136 deletions
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16
src/target/armv7m.c
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@@ -72,7 +72,6 @@ static struct reg armv7m_gdb_dummy_fp_reg =
.valid = 1,
.size = 96,
.arch_info = NULL,
.arch_type = 0,
};
static uint8_t armv7m_gdb_dummy_fps_value[4];
@@ -85,7 +84,6 @@ static struct reg armv7m_gdb_dummy_fps_reg =
.valid = 1,
.size = 32,
.arch_info = NULL,
.arch_type = 0,
};
#ifdef ARMV7_GDB_HACKS
@@ -99,7 +97,6 @@ struct reg armv7m_gdb_dummy_cpsr_reg =
.valid = 1,
.size = 32,
.arch_info = NULL,
.arch_type = 0,
};
#endif
@@ -148,8 +145,6 @@ static const struct {
#define ARMV7M_NUM_REGS ARRAY_SIZE(armv7m_regs)
static int armv7m_core_reg_arch_type = -1;
/**
* Restores target context using the cache of core registers set up
* by armv7m_build_reg_cache(), calling optional core-specific hooks.
@@ -542,6 +537,10 @@ int armv7m_arch_state(struct target *target)
return ERROR_OK;
}
static const struct reg_arch_type armv7m_reg_type = {
.get = armv7m_get_core_reg,
.set = armv7m_set_core_reg,
};
/** Builds cache of architecturally defined registers. */
struct reg_cache *armv7m_build_reg_cache(struct target *target)
@@ -554,11 +553,6 @@ struct reg_cache *armv7m_build_reg_cache(struct target *target)
struct armv7m_core_reg *arch_info = calloc(num_regs, sizeof(struct armv7m_core_reg));
int i;
if (armv7m_core_reg_arch_type == -1)
{
armv7m_core_reg_arch_type = register_reg_arch_type(armv7m_get_core_reg, armv7m_set_core_reg);
}
register_init_dummy(&armv7m_gdb_dummy_fps_reg);
#ifdef ARMV7_GDB_HACKS
register_init_dummy(&armv7m_gdb_dummy_cpsr_reg);
@@ -583,7 +577,7 @@ struct reg_cache *armv7m_build_reg_cache(struct target *target)
reg_list[i].value = calloc(1, 4);
reg_list[i].dirty = 0;
reg_list[i].valid = 0;
reg_list[i].arch_type = armv7m_core_reg_arch_type;
reg_list[i].type = &armv7m_reg_type;
reg_list[i].arch_info = &arch_info[i];
}