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authorRichard Henderson <richard.henderson@linaro.org>2022-11-26 18:54:23 -0800
committerRichard Henderson <richard.henderson@linaro.org>2023-01-17 10:08:55 -1000
commit9da6079b2695dcffd8b18890db6cafdf4dc373db (patch)
tree40f2a3e7c03b3dc10b3bc3a38aca0e8641cea3c4 /tcg
parentb7e4afbd9f2f9233a37e021f9e8cce472aecdd64 (diff)
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tcg: Add TranslationBlock.jmp_insn_offset
Stop overloading jmp_target_arg for both offset and address, depending on TCG_TARGET_HAS_direct_jump. Instead, add a new field to hold the jump insn offset and always set the target address in jmp_target_addr[]. This will allow a tcg backend to use either direct or indirect depending on displacement. Reviewed-by: Alex Bennée <alex.bennee@linaro.org> Signed-off-by: Richard Henderson <richard.henderson@linaro.org>
Diffstat (limited to 'tcg')
-rw-r--r--tcg/tcg.c6
1 files changed, 4 insertions, 2 deletions
diff --git a/tcg/tcg.c b/tcg/tcg.c
index 4ac7086..af2af99 100644
--- a/tcg/tcg.c
+++ b/tcg/tcg.c
@@ -321,7 +321,7 @@ static void G_GNUC_UNUSED set_jmp_insn_offset(TCGContext *s, int which)
* tcg_gen_code, where we bound tcg_current_code_size to UINT16_MAX.
*/
tcg_debug_assert(TCG_TARGET_HAS_direct_jump);
- s->gen_tb->jmp_target_arg[which] = tcg_current_code_size(s);
+ s->gen_tb->jmp_insn_offset[which] = tcg_current_code_size(s);
}
static uintptr_t G_GNUC_UNUSED get_jmp_target_addr(TCGContext *s, int which)
@@ -330,7 +330,7 @@ static uintptr_t G_GNUC_UNUSED get_jmp_target_addr(TCGContext *s, int which)
* Return the read-execute version of the pointer, for the benefit
* of any pc-relative addressing mode.
*/
- return (uintptr_t)tcg_splitwx_to_rx(s->gen_tb->jmp_target_arg + which);
+ return (uintptr_t)tcg_splitwx_to_rx(&s->gen_tb->jmp_target_addr[which]);
}
/* Signal overflow, starting over with fewer guest insns. */
@@ -4668,6 +4668,8 @@ int tcg_gen_code(TCGContext *s, TranslationBlock *tb, target_ulong pc_start)
/* Initialize goto_tb jump offsets. */
tb->jmp_reset_offset[0] = TB_JMP_OFFSET_INVALID;
tb->jmp_reset_offset[1] = TB_JMP_OFFSET_INVALID;
+ tb->jmp_insn_offset[0] = TB_JMP_OFFSET_INVALID;
+ tb->jmp_insn_offset[1] = TB_JMP_OFFSET_INVALID;
tcg_reg_alloc_start(s);