From: Anup Patel <apatel@ventanamicro.com>
To: opensbi@lists.infradead.org
Subject: [PATCH v2 05/10] lib: sbi: Simplify parameters of misaligned and access fault handlers
Date: Tue, 12 Mar 2024 15:57:59 +0530 [thread overview]
Message-ID: <20240312102804.1436376-6-apatel@ventanamicro.com> (raw)
In-Reply-To: <20240312102804.1436376-1-apatel@ventanamicro.com>
The struct sbi_trap_context already has the information needed by
misaligned load/store and access fault load/store handlers so directly
pass struct sbi_trap_context pointer to these functions.
Signed-off-by: Anup Patel <apatel@ventanamicro.com>
---
include/sbi/sbi_trap_ldst.h | 12 +++----
lib/sbi/sbi_trap.c | 8 ++---
lib/sbi/sbi_trap_ldst.c | 67 ++++++++++++++++++-------------------
3 files changed, 40 insertions(+), 47 deletions(-)
diff --git a/include/sbi/sbi_trap_ldst.h b/include/sbi/sbi_trap_ldst.h
index 9cab4e4..8aee316 100644
--- a/include/sbi/sbi_trap_ldst.h
+++ b/include/sbi/sbi_trap_ldst.h
@@ -20,16 +20,12 @@ union sbi_ldst_data {
ulong data_ulong;
};
-int sbi_misaligned_load_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+int sbi_misaligned_load_handler(struct sbi_trap_context *tcntx);
-int sbi_misaligned_store_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+int sbi_misaligned_store_handler(struct sbi_trap_context *tcntx);
-int sbi_load_access_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+int sbi_load_access_handler(struct sbi_trap_context *tcntx);
-int sbi_store_access_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+int sbi_store_access_handler(struct sbi_trap_context *tcntx);
#endif
diff --git a/lib/sbi/sbi_trap.c b/lib/sbi/sbi_trap.c
index 4dbda06..a2afb0a 100644
--- a/lib/sbi/sbi_trap.c
+++ b/lib/sbi/sbi_trap.c
@@ -290,12 +290,12 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
break;
case CAUSE_MISALIGNED_LOAD:
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_LOAD);
- rc = sbi_misaligned_load_handler(regs, trap);
+ rc = sbi_misaligned_load_handler(tcntx);
msg = "misaligned load handler failed";
break;
case CAUSE_MISALIGNED_STORE:
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_MISALIGNED_STORE);
- rc = sbi_misaligned_store_handler(regs, trap);
+ rc = sbi_misaligned_store_handler(tcntx);
msg = "misaligned store handler failed";
break;
case CAUSE_SUPERVISOR_ECALL:
@@ -305,12 +305,12 @@ struct sbi_trap_context *sbi_trap_handler(struct sbi_trap_context *tcntx)
break;
case CAUSE_LOAD_ACCESS:
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_LOAD);
- rc = sbi_load_access_handler(regs, trap);
+ rc = sbi_load_access_handler(tcntx);
msg = "load fault handler failed";
break;
case CAUSE_STORE_ACCESS:
sbi_pmu_ctr_incr_fw(SBI_PMU_FW_ACCESS_STORE);
- rc = sbi_store_access_handler(regs, trap);
+ rc = sbi_store_access_handler(tcntx);
msg = "store fault handler failed";
break;
default:
diff --git a/lib/sbi/sbi_trap_ldst.c b/lib/sbi/sbi_trap_ldst.c
index 5a0537b..f9c0241 100644
--- a/lib/sbi/sbi_trap_ldst.c
+++ b/lib/sbi/sbi_trap_ldst.c
@@ -12,7 +12,6 @@
#include <sbi/riscv_fp.h>
#include <sbi/sbi_error.h>
#include <sbi/sbi_trap_ldst.h>
-#include <sbi/sbi_pmu.h>
#include <sbi/sbi_trap.h>
#include <sbi/sbi_unpriv.h>
#include <sbi/sbi_platform.h>
@@ -23,8 +22,7 @@
* @return rlen=success, 0=success w/o regs modification, or negative error
*/
typedef int (*sbi_trap_ld_emulator)(int rlen, union sbi_ldst_data *out_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+ struct sbi_trap_context *tcntx);
/**
* Store emulator callback:
@@ -32,8 +30,7 @@ typedef int (*sbi_trap_ld_emulator)(int rlen, union sbi_ldst_data *out_val,
* @return wlen=success, 0=success w/o regs modification, or negative error
*/
typedef int (*sbi_trap_st_emulator)(int wlen, union sbi_ldst_data in_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap);
+ struct sbi_trap_context *tcntx);
static ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
ulong addr_offset)
@@ -47,10 +44,11 @@ static ulong sbi_misaligned_tinst_fixup(ulong orig_tinst, ulong new_tinst,
return orig_tinst | (addr_offset << SH_RS1);
}
-static int sbi_trap_emulate_load(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap,
+static int sbi_trap_emulate_load(struct sbi_trap_context *tcntx,
sbi_trap_ld_emulator emu)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
ulong insn, insn_len;
union sbi_ldst_data val = { 0 };
struct sbi_trap_info uptrap;
@@ -150,8 +148,7 @@ static int sbi_trap_emulate_load(struct sbi_trap_regs *regs,
return sbi_trap_redirect(regs, orig_trap);
}
- rc = emu(len, &val, regs, orig_trap);
-
+ rc = emu(len, &val, tcntx);
if (rc <= 0)
return rc;
@@ -169,10 +166,11 @@ static int sbi_trap_emulate_load(struct sbi_trap_regs *regs,
return 0;
}
-static int sbi_trap_emulate_store(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap,
+static int sbi_trap_emulate_store(struct sbi_trap_context *tcntx,
sbi_trap_st_emulator emu)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
ulong insn, insn_len;
union sbi_ldst_data val;
struct sbi_trap_info uptrap;
@@ -254,8 +252,7 @@ static int sbi_trap_emulate_store(struct sbi_trap_regs *regs,
return sbi_trap_redirect(regs, orig_trap);
}
- rc = emu(len, val, regs, orig_trap);
-
+ rc = emu(len, val, tcntx);
if (rc <= 0)
return rc;
@@ -265,9 +262,10 @@ static int sbi_trap_emulate_store(struct sbi_trap_regs *regs,
}
static int sbi_misaligned_ld_emulator(int rlen, union sbi_ldst_data *out_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+ struct sbi_trap_context *tcntx)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
struct sbi_trap_info uptrap;
int i;
@@ -283,17 +281,16 @@ static int sbi_misaligned_ld_emulator(int rlen, union sbi_ldst_data *out_val,
return rlen;
}
-int sbi_misaligned_load_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+int sbi_misaligned_load_handler(struct sbi_trap_context *tcntx)
{
- return sbi_trap_emulate_load(regs, orig_trap,
- sbi_misaligned_ld_emulator);
+ return sbi_trap_emulate_load(tcntx, sbi_misaligned_ld_emulator);
}
static int sbi_misaligned_st_emulator(int wlen, union sbi_ldst_data in_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+ struct sbi_trap_context *tcntx)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
struct sbi_trap_info uptrap;
int i;
@@ -309,17 +306,17 @@ static int sbi_misaligned_st_emulator(int wlen, union sbi_ldst_data in_val,
return wlen;
}
-int sbi_misaligned_store_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+int sbi_misaligned_store_handler(struct sbi_trap_context *tcntx)
{
- return sbi_trap_emulate_store(regs, orig_trap,
- sbi_misaligned_st_emulator);
+ return sbi_trap_emulate_store(tcntx, sbi_misaligned_st_emulator);
}
static int sbi_ld_access_emulator(int rlen, union sbi_ldst_data *out_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+ struct sbi_trap_context *tcntx)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
+
/* If fault came from M mode, just fail */
if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) == PRV_M)
return SBI_EINVAL;
@@ -332,16 +329,17 @@ static int sbi_ld_access_emulator(int rlen, union sbi_ldst_data *out_val,
return rlen;
}
-int sbi_load_access_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+int sbi_load_access_handler(struct sbi_trap_context *tcntx)
{
- return sbi_trap_emulate_load(regs, orig_trap, sbi_ld_access_emulator);
+ return sbi_trap_emulate_load(tcntx, sbi_ld_access_emulator);
}
static int sbi_st_access_emulator(int wlen, union sbi_ldst_data in_val,
- struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+ struct sbi_trap_context *tcntx)
{
+ const struct sbi_trap_info *orig_trap = &tcntx->trap;
+ struct sbi_trap_regs *regs = &tcntx->regs;
+
/* If fault came from M mode, just fail */
if (((regs->mstatus & MSTATUS_MPP) >> MSTATUS_MPP_SHIFT) == PRV_M)
return SBI_EINVAL;
@@ -354,8 +352,7 @@ static int sbi_st_access_emulator(int wlen, union sbi_ldst_data in_val,
return wlen;
}
-int sbi_store_access_handler(struct sbi_trap_regs *regs,
- const struct sbi_trap_info *orig_trap)
+int sbi_store_access_handler(struct sbi_trap_context *tcntx)
{
- return sbi_trap_emulate_store(regs, orig_trap, sbi_st_access_emulator);
+ return sbi_trap_emulate_store(tcntx, sbi_st_access_emulator);
}
--
2.34.1
next prev parent reply other threads:[~2024-03-12 10:27 UTC|newest]
Thread overview: 30+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-03-12 10:27 [PATCH v2 00/10] Improve trap handling for nested traps Anup Patel
2024-03-12 10:27 ` [PATCH v2 01/10] lib: sbi: Remove epc from struct sbi_trap_info Anup Patel
2024-03-12 10:27 ` [PATCH v2 02/10] lib: sbi: Remove sbi_trap_exit() and related code Anup Patel
2024-03-12 10:27 ` [PATCH v2 03/10] include: sbi: Add trap_context pointer in struct sbi_scratch Anup Patel
2024-03-12 16:55 ` Samuel Holland
2024-03-12 10:27 ` [PATCH v2 04/10] lib: sbi: Introduce trap context Anup Patel
2024-03-12 16:55 ` Samuel Holland
2024-03-13 4:56 ` Xiang W
2024-03-17 11:23 ` Anup Patel
2024-03-12 10:27 ` Anup Patel [this message]
2024-03-12 16:55 ` [PATCH v2 05/10] lib: sbi: Simplify parameters of misaligned and access fault handlers Samuel Holland
2024-03-13 13:45 ` Clément Léger
2024-03-12 10:28 ` [PATCH v2 06/10] lib: sbi: Simplify parameters of sbi_illegal_insn_handler() Anup Patel
2024-03-12 16:56 ` Samuel Holland
2024-03-13 13:42 ` Clément Léger
2024-03-17 11:28 ` Anup Patel
2024-03-12 10:28 ` [PATCH v2 07/10] lib: sbi: Remove regs paramter of sbi_irqchip_process() Anup Patel
2024-03-12 16:56 ` Samuel Holland
2024-03-13 13:39 ` Clément Léger
2024-03-17 11:30 ` Anup Patel
2024-03-12 10:28 ` [PATCH v2 08/10] lib: sbi: Remove regs parameter from trap irq handling functions Anup Patel
2024-03-12 16:56 ` Samuel Holland
2024-03-13 13:51 ` Clément Léger
2024-03-17 11:36 ` Anup Patel
2024-03-12 10:28 ` [PATCH v2 09/10] lib: sbi: Pass trap context pointer to sbi_ecall_handler() Anup Patel
2024-03-12 16:56 ` Samuel Holland
2024-03-13 13:47 ` Clément Léger
2024-03-12 10:28 ` [PATCH v2 10/10] lib: sbi: Extend sbi_trap_error() to dump state in a nested trap Anup Patel
2024-03-12 17:21 ` Samuel Holland
2024-03-17 11:55 ` Anup Patel
Reply instructions:
You may reply publicly to this message via plain-text email
using any one of the following methods:
* Save the following mbox file, import it into your mail client,
and reply-to-all from there: mbox
Avoid top-posting and favor interleaved quoting:
https://en.wikipedia.org/wiki/Posting_style#Interleaved_style
* Reply using the --to, --cc, and --in-reply-to
switches of git-send-email(1):
git send-email \
--in-reply-to=20240312102804.1436376-6-apatel@ventanamicro.com \
--to=apatel@ventanamicro.com \
--cc=opensbi@lists.infradead.org \
/path/to/YOUR_REPLY
https://kernel.org/pub/software/scm/git/docs/git-send-email.html
* If your mail client supports setting the In-Reply-To header
via mailto: links, try the mailto: link
Be sure your reply has a Subject: header at the top and a blank line
before the message body.
This is a public inbox, see mirroring instructions
for how to clone and mirror all data and code used for this inbox